Precision Parts Directory

Valve internals live or die by sealing-surface finish and concentricity. Sinbo turns, mills and grinds valve components from bar stock in stainless 303/304/316/416, DZR brass CW602N, CuZn39Pb3 free-cutting brass and PEEK/PTFE, holding ±0.005 mm on critical diameters and Ra 0.8 or better on seats. Anti-blowout stems, lapped seat pairs and drilled thermowells are routine work across our 220 CNC lathes.

• Ball valve ball — 303/316 stainless, turned and ground, sphericity ≤0.01 mm, Ø6–100 mm, Ra 0.4 sealing surface
• Ball valve seat — PEEK, PTFE or RPTFE, turned to ±0.01 mm with matched-lap sealing face
• Ball valve stem — 316 or 416 hardened stainless, anti-blowout shoulder per drawing, rolled or cut thread
• Ball valve body, 2- and 3-piece — 316 stainless or CW617N brass from bar, NPT/BSP/ISO threads, ±0.02 mm bore
• Valve bonnet — 316 stainless turned from bar, threaded and face-sealed, 1,000 psi class typical
• Gland flange — 316 stainless, turned, sealing face Ra 1.6
• Gland nut — brass or 316 stainless, knurled or hex drive per drawing
• Stem packing ring — PTFE or PEEK, thin-wall turned, ±0.02 mm
• Check valve disc — 316 stainless, lapped face, with integrated guide rib
• Check valve poppet — 316/416 stainless or PEEK, ground guide diameter, spring seat machined in
• Poppet guide — 316 stainless, ground OD, ±0.005 mm
• Valve seat insert — 316 stainless or PEEK, press-fit OD tolerance g6 typical
• Needle valve stem — 416 stainless, tapered and ground, 20°/30° seat angles
• Needle valve body — 316 stainless from bar, cross-drilled and threaded
• Instrument valve body — 316 stainless manifold-drilled, 10,000 psi class typical
• Orifice plate — 316/304 stainless, orifices drilled and deburred to ±0.02 mm
• Spray nozzle insert — 303/316 stainless, milled vane slots, swirl chambers from Ø2 mm
• Mist nozzle body — brass or 303 stainless, internal swirl chamber turned in one setup
• Solenoid valve core (armature) — magnetic stainless 430/416, ground OD, nickel-plated on request
• Solenoid armature tube — 304 stainless, thin-wall turned, welded-end option
• Solenoid tube end cap — 304 stainless, orbital-weld-ready face
• Pressure relief valve seat — 316 stainless, lapped seating face, crack-pressure tested pair on request
• Regulator poppet — brass or 316 stainless, ground, matched to seat
• Regulator valve seat — PEEK or brass, ±0.01 mm
• Valve cage — 316 stainless, drilled port patterns, port position ±0.05 mm
• Valve plug (contoured) — 316 stainless, milled contour profile per trim drawing
• Control valve trim set — plug, seat and cage machined as a matched set
• Valve trunnion — 316/416 stainless, ground, ±0.005 mm
• Bleed valve screw — 303 stainless, hex socket + lapped tip
• Gauge valve body — brass or 316 stainless, compact bar-stock body
• Thermowell — 316 stainless or brass, drilled from solid, stems to 300 mm, ±0.1 mm
• Filter housing end cap — 316/304 stainless, O-ring groove + port threads
• Diverter valve stem — brass or 416 stainless, ground seal diameters
• Angle valve body — brass from bar, both ports single-setup for concentricity
• Gate valve stem — 416 stainless with rolled trapezoidal thread
• Butterfly valve stem — 316 stainless, ground, taper or keyed blade end
• Actuator coupling — aluminum or 316 stainless, milled drive flats
• Actuator adapter — aluminum 6061, machined both faces in one setup
• Limit switch shaft — 303 stainless, ground, D-flat milled
• Pilot valve body — brass or 316, cross-drilled internal galleries
• Latching valve plunger — 416 stainless, hardened and ground
• Dosing valve needle and seat pair — 316 stainless, lapped as a pair for repeatable shut-off
• Proportional valve sleeve — hardened steel or 316, ground bore, ±0.002 mm
• Cartridge valve sleeve — 316 stainless, ground + honed bore
• Cartridge valve poppet — hardened steel or PEEK-seated, ground

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Machine-readable version (valve-fluid-components.md)

Threaded fittings are a volume game: bar-fed CNC lathes running unattended, 100% thread gauging, and plating partners for nickel, chrome and zinc finishes. Sinbo machines fittings in CW617N and DZR CW602N brass, 303/316/416 stainless and aluminum, from M5 to G2, NPT/NPTF, BSP/BSPP/BSPT, metric and ORFS — with pressure-test and leak-test documentation on request.

• Hex nipple — close, long and reducing forms; CW617N brass or 316 stainless, thread gauged 100%
• Reducing hex nipple — two thread sizes single setup, concentricity ≤0.05 mm
• Hex bushing — brass or stainless, male OD × female ID per drawing
• Hex plug — brass/316, with or without magnet bore
• Socket plug — countersunk internal hex, flush finish
• Threaded cap — female thread + hex or knurl drive
• Round coupling — socket-weld or threaded, bore-to-bore ±0.05 mm
• Hex coupling — brass or 316 stainless, both threads tapped in one clamping
• Union body, nut and cone set — three-piece matched set, cone angle 60°/24° options
• Compression fitting body — brass, EN 1254-style geometry
• Compression ferrule ring — brass or nylon, matched to body taper
• Flare fitting half — 45° SAE flare, flared face Ra 1.6
• Flare nut — brass or aluminum, six flats after thread
• JIC 37° fitting — steel or 316 stainless, 37° seat ground
• BSP/NPT adapter — brass or 303 stainless, mixed thread standards single part
• Metric-to-BSP adapter — brass, gauge-checked threads both ends
• Bulkhead fitting — 316 stainless, locknut face machined for O-ring seal
• Panel mount fitting — front-panel thread + rear compression, one-part flow path
• Hose barb, single and multi-wing — brass/303/316, barb OD tolerance for push-on hose
• Hose insert stem — turned + ground stem, optional collar
• Quick coupler nipple — hardened steel or 316, ground seating cone
• Quick coupler socket — brass or steel, ball-retention geometry milled
• Pneumatic elbow insert — brass, internal flow bore deburred
• Banjo fitting — 316 stainless or steel, cross-flow hole drilled
• Banjo bolt with drilled passage — 10.9 steel or 316, single/double oil feed, hole position ±0.05 mm
• Tee fitting — brass or stainless, both branches from bar, 90° ±0.1°
• Cross fitting — brass, four-way thread alignment
• Street elbow — male × female thread, machined hex on both ends
• 90° machined elbow — 316 stainless from solid, smooth internal radius
• Manifold block — aluminum or steel, drilled and cross-drilled galleries, pressure tested
• Gauge adapter — brass, G1/4–G1/2 back connections
• Gauge snubber — 316 stainless, internal porous restriction element housing
• Pigtail syphon tube — 316 stainless, bent and machined, G1/2 typical
• Swivel fitting — brass or steel, rotating collar with retaining groove
• Grease fitting, machined brass — DIN 71412-style ball check
• Magnetic drain plug — steel with press-fitted magnet, thread gauged
• Sight glass fitting — brass or 316, glass seat face lapped
• Breather fitting — brass, sintered vent insert pocket
• Cylinder port fitting — aluminum-safe brass, shallow thread stop
• Service valve fitting — brass, refrigeration flare + Schrader pocket
• Camlock adapter — aluminum/brass/316, cam-arm geometry milled
• Tube sleeve (ferrule) — ground OD, cut to length ±0.1 mm
• Tube insert liner — 316 stainless, light press fit

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Machine-readable version (pipe-fittings-connectors.md)

Standard fasteners are a commodity; special fasteners are a drawing conversation. Sinbo makes screws, nuts and inserts to your print — Torx, spline, tri-wing, pin-in-hex security drives, custom head forms — via Swiss turning for micro sizes and 60–180 T cold heading for volume, followed by thread rolling for fatigue strength. Brass, 303/304/316/416 stainless, alloy steels and aluminum, zinc/nickel/black-oxide finished.

• Shoulder screw — ground shoulder, ±0.01 mm on shoulder diameter, thread rolled
• Set screw, cup point — alloy steel or 416, hardened 45 HRC option
• Set screw, flat / cone / dog point — point geometry ground after heat treatment
• Thumb screw, knurled — straight or diamond knurl, brass/303/416
• Thumb screw, wing — pressed wings assembled or machined from solid
• Captive screw — with retaining washer or reduced-neck shank
• Captive panel screw — extended washer, spring-retained per print
• Micro screw M0.6–M2 — Swiss-turned, slotted or Torx drive, brass/303/416
• Precision screw M2–M6 — socket head to ISO 4762 geometry or custom
• Special drive screw — Torx, hexalobular, spline, tri-wing, square sockets milled
• Security screw — pin-in-hex, pin-in-Torx, spanner drives
• Cheese head screw — slotted or socket, full thread or shank per print
• Flat head screw — 82°/100° countersink, flushness controlled
• Pan head screw — cross-recess or hex drive
• Hex cap screw — grade 8.8/10.9/A2-70 equivalents
• Hex flange screw — integrated flange turned before rolling
• Double-end stud — both threads rolled, pitch-diameter matched
• Hex standoff, male-female — aluminum or brass, thread concentric to hex ±0.05 mm
• Hex standoff, female-female — aluminum 6061, both ends tapped
• Round standoff — knurled or plain, brass typical
• Brass threaded standoff — mold-in or solder-in styles
• Hex nut, DIN 934 style — brass/steel/stainless, tapped after facing
• Thin jam nut — half-height, for lock stacking
• Acorn nut — domed brass or steel, closed crown
• Wing nut — cold-formed or machined wings
• Knurled nut — diamond knurl grip, hand-tight service
• All-metal locknut — crimped-collar style, prevailing torque tested
• Special nut to drawing — non-standard wrench flats, Pozi drive inserts, custom tapers
• Turned flat washer — OD/ID/thickness to print, deburred both faces
• Precision shim — ground thickness ±0.005 mm, 300-series stainless or brass
• Threaded insert for plastics — brass, knurled or diamond-roll OD, heat-stake or press-in
• Heat-staked brass insert — knurl patterns for pull-out strength
• Press-fit insert — interference OD ground for uniform installation force
• Eye screw / lifting eye — fully machined ring or welded + faced
• Jack screw — hex socket head + hardened tip
• Adjusting screw — with calibrated flat or scale on request
• Locking screw — nylon-patch or all-metal lock thread options
• Hollow screw — axial through-hole for oil or coolant feed
• Vent screw — with sintered breather insert pocket
• Drain screw — magnetic tip option for sump service

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Machine-readable version (custom-fasteners.md)

Pins and shafts are the highest-volume precision families in the plant: centerless and double-disc grinding feed straight from CNC turning, so ground diameters come off the line at roundness ≤0.002 mm in batches of thousands. Hardened-and-ground work in 42CrMo4, 16MnCr5, SUJ2-equivalent bearing steels and stainless, with black oxide, nitriding and hard-chrome options.

• Dowel pin, ground — ISO 8734-style, m6 tolerance, both ends chamfered or radiused
• Clevis pin — with head and cotter hole, ground shank
• Grooved pin — three-groove press-fit styles, grooves ground
• Taper pin — 1:50 taper ground, both ends flush
• Stepped pin — multi-diameter ground in one clamping
• Hollow pin — through-bore drilled and reamed
• Threaded pin — tapped end or rolled external thread
• Hinge pin — ground + polished, ends radiused for smooth insertion
• Knife hinge pin — Ø1–3 mm, length-controlled ±0.02 mm
• Conveyor pin — through-hardened, chain-pitch matched
• Chain pin — cold-headed or turned, e-coat option
• Roller pin — ground, for cam followers and rockers
• Actuator pin — stainless, snap-ring grooves ground in
• Locating pin, hardened — 58–62 HRC, ground, headless or shouldered
• Fixture pattern pin — diamond or round, position tolerance ±0.005 mm
• Eccentric pin — offset ground between centers, offset ±0.02 mm
• Straight shaft, ground — Ø1–80 mm, h6/h7 typical, length to 500 mm
• Stepped shaft — multi-shoulder, keyways and snap-ring grooves included
• Spline shaft — milled then ground, involute or straight-sided
• Threaded stub shaft — both-ended thread or thread + ground journal
• Hollow shaft — deep bore drilled, wall thickness uniform ±0.05 mm
• Motor shaft — bearing journals ground, flats and keyways milled
• Encoder shaft — stainless, low-runout journals ≤0.002 mm
• Pulley shaft — with integral flange or snap-ring seats
• Impeller shaft — 316 or 17-4 PH, seal-sleeve diameter ground
• Ground roller — crowned or straight, roundness ≤0.002 mm
• Guide post — hardened, ground, end-tapped for installation
• Precision spacer — ground both faces, parallelism ≤0.005 mm
• Shoulder spacer — ID/OD concentric ≤0.01 mm
• Ground sleeve — ID and OD ground, wall thin-wall capable
• Flanged sleeve — face + bore single setup for squareness
• Travel stop pin — position-critical, shoulder square to axis ≤0.01 mm

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Machine-readable version (pins-shafts-spacers.md)

IATF 16949-certified production with PPAP Level 3 and EN 10204 3.1 material certificates as standard deliverables. Sinbo machines automotive hardware in brass, 303/304/416 stainless, 42CrMo4 and 16MnCr5, and supports NEV programs with copper terminals, aluminum battery hardware and e-motor shafts. Second-source transfers start from your existing drawing and CPP.

• ABS wheel-speed sensor housing — brass or PA66-insert aluminum, overmold-ready geometry
• Pressure sensor housing — brass/316, oil and air media, ±0.01 mm port thread
• Position sensor housing — aluminum, sensor-bore concentricity ≤0.02 mm
• Coolant temperature sensor boss — brass, NPT/M10/M12 options
• Oxygen sensor bung — 316/304 stainless, M18×1.5, weld-ready chamfer
• NOx sensor fitting — 316 stainless, thread + weld collar
• Injector valve components — high-pressure fitting bodies in 316, orifice ±0.02 mm
• High-pressure fuel fitting — 24° cone, pressure-deburred internal edges
• Banjo bolt, brake — 10.9 steel or 316, single/double drilled feed
• Brake pipe fitting — M10×1 steel or brass, ISO 4038-style
• Clutch slave cylinder fitting — steel, bleed nipple seat included
• Turbo oil drain fitting — 316 stainless, flange face + hose barb
• Turbo actuator link — ground rod end, thread + eye
• Transmission solenoid spool — ground, ±0.002 mm, ATF-compatible finish
• Detent pin — hardened, spring-groove ground
• Shift fork pin — case-hardened 16MnCr5
• Gearbox ground shaft — 42CrMo4, journals ground after nitriding
• Wheel bearing spacer — ground both faces, height ±0.01 mm
• Suspension bushing sleeve — steel, vulcanization-ready knurled OD
• Shock absorber eye bushing — turned + ground, press-fit OD
• Battery pack standoff — aluminum 6061, insulating washer face option
• Machined copper battery terminal — C11000/T2 copper, tin or nickel plated
• Cold-headed battery contact — copper alloy, head forms to print, plated
• Charging connector terminal — copper alloy, silver/tin plating per spec
• Charging station coolant fitting — brass, leak-tested
• Heater cartridge sleeve — aluminum, bore ±0.02 mm
• E-motor ground shaft — bearing seats ground, keyway + spline options
• Motor end cap, machined — aluminum, bearing bore + sensor features
• Cold plate fitting — brass/aluminum, O-ring face seal
• Thermal management fitting — 316/brass, compact geometry
• Wire harness connector pin — phosphor bronze/brass, plated, strip or loose
• Cold-headed terminal pin — head forms at 60–180 T volume
• Relay core piece — magnetic soft iron, annealed, plated
• Seat adjuster shaft — ground, e-coated
• Seat belt retractor pin — hardened + ground, rupture-tested lot
• Milled sensor bracket — 6061-T6, tapped + datum-controlled
• CNC wheel hub spacer — forged or bar 6061/7075

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Machine-readable version (automotive-nev-parts.md)

Sensor barrels, circular connector shells and PCB hardware are long-run bar work for our Swiss and CNC lathes, with tolerances that survive overmolding and potting. Sinbo machines 303/304/316 stainless, brass, aluminum and Kovar 4J29 for glass-to-metal sealing applications, and supplies cold-forged contacts with selective plating through audited partners.

• Ultrasonic sensor housing — 304/303 stainless barrel, face thickness controlled for acoustics
• Proximity switch barrel — Ø8/12/18/30 mm, thread + face single setup
• Capacitive sensor body — brass nickel-plated or 303 stainless
• Photoelectric sensor barrel — 303 stainless, lens seat faced
• M8 connector body — brass or 303, 3/4-pin insert geometry
• M12 connector body — A/B/X-coding keyways milled
• M23 connector shell — brass/alu, thread + key per drawing
• SMA connector housing — brass or 303 stainless, 36-thread rolled
• MMCX / SMB housing — micro-geometry turned on Swiss lathes
• Coaxial housing — shield continuity features machined in
• Fiber optic ferrule holder — titanium/SS, ceramic ferrule bore ±0.002 mm
• EMI shield can — stamped + coined 5052,±0.1 mm flatness option
• Milled shield case — aluminum, shielding walls ±0.05 mm
• PCB standoff — brass, male-female or F-F, M2/M2.5/M3
• PCB spacer — ground length ±0.02 mm
• Contact pin — brass/beryllium copper C17200, plated
• Socket contact — beryllium copper, heat-treated 40 HRC option
• Spring probe housing — brass, inner bore ±0.01 mm
• Pogo pin plunger — Swiss-turned, tip radii controlled
• Cold-forged battery contact — copper, head + leg forms to print
• Custom heat sink — 6063/6061 milled, flatness ≤0.05 mm on mounting face
• Pin-fin heat sink insert — cold-forged copper pins
• Antenna ground plane mount — aluminum, NMO/thread options
• Cable gland body — nickel-plated brass, IP68 thread geometry
• Cable gland locknut — brass, stamped or machined
• Strain relief insert — brass knurled sleeve
• Potentiometer shaft — stainless, D-flat + knurl options
• Encoder shaft — Ø2–10 mm, ground journals
• Knurled knob insert — brass diamond knurl, mold-in flange option
• Mold-in threaded bushing — brass, pull-out knurl patterns
• Relay armature — soft magnetic iron, cold-headed flat + ground
• Stepper motor rotor shaft — multi-journal ground, magnet sleeve ready
• Vibration motor weight — eccentric turned brass/steel, offset ±0.02 mm
• Camera module barrel — aluminum/brass, ID thread for focus travel
• C-mount adapter — aluminum, 1"-32 thread gauge-checked
• Enclosure standoff pillar — aluminum, tapped both ends

Related: Sensor housings case study Electrical connectors case study Kovar sealing parts

Machine-readable version (sensor-electronics-parts.md)

Motion components live on two numbers: spool-to-bore clearance and rod surface finish. Sinbo grinds directional spools to ±0.002 mm, turns cylinder pistons with groove geometries for any seal brand, and supplies ground piston rods ready for hard chrome. Aluminum manifolds are drilled, cross-drilled, threaded and pressure tested before ship.

• Cylinder piston — aluminum or steel, seal grooves to brand specification
• Piston rod, ground — induction-hardened, Ra 0.2 ready for hard chrome
• Rod end, male/female thread — steel, ball-swivel variants included
• Rod clevis — carbon steel, pin hole H7
• Rod eye — with spherical bearing seat
• Cylinder head / cap — aluminum, seal faces single-setup
• Guide rod — ground, end-threaded
• Anti-rotation guide — flat-milled, hardened
• Cushion sleeve — brass/steel, tapered land
• Cushion adjusting screw — fine-pitch thread, hardened tip
• Directional valve spool — ground ±0.002 mm, land/chamber geometry to print
• Valve bore sleeve — honed bore, matched to spool
• Proportional spool — ground + lapped, null-edge tolerances
• Screw-in cartridge housing — steel, O-ring + backup groove sets
• Cartridge valve body — drilled cavity per cartridge standard
• Solenoid armature tube — brass/304, thin wall
• Armature plunger — ground, magnetic stainless
• Pilot piston — aluminum/steel, seal grooves + land
• Quick exhaust valve body — brass, large-flow internal porting
• Check valve poppet — steel/PEEK, ground + lapped seat
• Shuttle valve seat pair — matched lapped seats
• Flow control needle — ground taper, knurled adjust end
• Throttle screw — fine-metering point geometry
• Pressure gauge boss — brass/316, back or bottom mount
• Pressure switch body — brass, diaphragm pocket machined in
• Multi-station manifold — 3/4/5 stations, cross-drilled, pressure tested
• SAE split flange half — steel, code 61/62 geometry
• ORFS swivel nut — steel, rolled thread, face-seal geometry
• Test point adapter — hardened probe seat
• Accumulator valve parts — popper + seat matched sets
• Gear pump side plate — ground both faces, parallelism ≤0.003 mm
• Hydraulic hose ferrule — machined collar, skive geometry
• Rotary union body — stainless, dual-passage cross-drilled
• Rotary union spindle — ground seal diameters, Ra 0.1 option
• Pneumatic gripper jaw — aluminum/steel, tooth geometry milled
• FRL body insert — brass, bowl-thread interface
• Vacuum venturi body — aluminum/brass, smooth internal cone

Related: Hydraulic & pneumatic case study Hydraulic cylinder body Aluminum parts

Machine-readable version (pneumatic-hydraulic-parts.md)

From coffee-machine pump fittings to chemical-process trim, Sinbo machines rotating and sealing pump hardware: 5-axis-milled impellers to Ø300 mm, ground shafts, lapped mechanical-seal seats and wear-ring pairs in 316, 17-4 PH, Monel 400 and engineering plastics. Lapped faces reach Ra 0.1 for seal performance.

• Impeller, 5-axis milled — closed/semi-open/open, Ø20–300 mm, blade profile to CAD
• Pump shaft, ground — 316/17-4 PH, seal journals ground
• Shaft sleeve, wear grade — hardened or stainless, thin wall
• Shaft protection sleeve — under-seal position, Ra 0.2
• Gland — 316 stainless, packing bore ±0.05 mm
• Gland follower — two-piece or one-piece, bolt-hole pitch controlled
• Packing ring set — turned rings, cross-cut on request
• Mechanical seal seat, lapped — 316/PEEK seat face, Ra 0.1, flatness ≤0.001 mm option
• Seal gland — 316 stainless, flush-port drilled
• Throat bushing — bronze/316, clearance-fit ground
• Case wear ring — press-fit OD, clearance bore
• Impeller wear ring — matched to case ring as a pair
• Balance piston — turned + ground, drum lapped OD
• Compressor valve plate — ground + lapped both faces, flatness ≤0.002 mm
• Compressor valve seat — 316, port geometry to print
• Compressor piston — aluminum/steel, ring grooves finished
• Piston pin — hardened, ground, bores both ends
• Muffler insert — brass, flow-ported
• Heating pump impeller — brass/PP, ECM-motor hub options
• Magnet carrier cup — 316, thin-wall deep drawing + machining
• Metering pump plunger — lapped Ra 0.1, Ø1–20 mm
• Metering check ball seat — matched pair, repeatable shut-off tested
• Dosing head — 316/PEEK-lined, port alignment ±0.05 mm
• Fluid end body — 316 stainless, drilled and cross-ported
• Pump bracket, milled — cast or bar aluminum, motor pilot face
• Motor mount adapter — IEC/NEMA pilot options

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Machine-readable version (pump-compressor-parts.md)

Swiss-type lathes with guide bushings hold ±0.005 mm on parts down to Ø0.3 mm, in brass, 303/316 stainless, beryllium copper C17200 and Kovar. Watch-grade finishing, micro-milling for flats and slots, and single-part traceability make this the house speciality for instrument, watch, optical and test-probe builders.

• Micro shaft, Ø0.3–8 mm — ground, runout ≤0.002 mm
• Micro pin — length ±0.02 mm, tip radii controlled
• Micro screw M0.6–M2 — Swiss-turned, slotted/Torx, polished head option
• Micro nut — brass/303, tapped M0.6 up
• Micro standoff — Ø1–3 mm, thread + shoulder
• Watch crown tube — brass, ID/OD concentric
• Instrument stem — ground, end-profile milled
• Dental instrument ferrule — 303 stainless, cleanroom-washed option
• Optical micro sleeve — ID ground, black-finish option
• Guide bushing, hardened — carbide-bore options, ID ±0.002 mm
• Micro nozzle, Ø0.05 orifice — orifice drilled and deburred, flow-verified
• Micro pinion — milled teeth, module 0.1+
• Test probe plunger — BeCu, heat-treated, plated
• Test socket pin — brass/BeCu, gold-plated
• Micro hinge — assembled pin + barrel set
• Micro axle — ground both ends, wheel press-fit zone
• Micro slotted screw, polished head — watch-grade cosmetic finish
• Buckle axle — ground, length ±0.02 mm
• Micro valve seat — PEEK/316, lapped
• Fiber ferrule — titanium/SS, bore ±0.001 mm option
• Micro spacer — ground thickness ±0.005 mm
• Vibration weight — eccentric micro-milled
• Micro terminal — cold-headed or turned, plated
• Micro collet — slotted + ground, grip runout ≤0.005 mm
• Stylus holder — 303 stainless, ruby-seat bore
• Micro tool blank — ground shank, end-prep ready
• Miniature valve spool — ground, ±0.002 mm
• Micro solenoid core — magnetic stainless, plated
• Micro lead screw — rolled thread, ±0.01 mm lead error
• Camera module barrel — brass, black-anodized ID option

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Machine-readable version (swiss-micro-parts.md)

Eyewear hardware is micro-precision at volume: 5/7/9-barrel hinges, ground hinge pins and M1.2–M1.6 screws in brass, nickel silver and 303 stainless, with cosmetic finishes from polished to PVD through audited plating partners. The same cell builds optical hardware — lens retainers, filter rings and C-mount adapters.

• Barrel hinge, 5/7/9-barrel — brass/nickel silver/303, assembled and pinned
• Hinge block — milled + drilled, leaf alignment ±0.02 mm
• Hinge plate — stamped or milled, countersink geometry
• Hinge pin, Ø0.8–1.6 mm — ground + polished, ends rivet-formed on request
• Rivet hinge components — rivet-post + barrel matched sets
• Spring hinge components — plunger + spring seat, heat-treated plunger
• Temple hinge components — left/right paired sets
• Nose pad arm — brass/303, pad-face angle per drawing
• Nose pad mount, push-in — brass, bayonet or snap geometry
• Nose pad screw M1.4 — brass/303, slotted or cross drive
• Frame screw M1.2–M1.6 — Swiss-turned, head polish grade A option
• Lens screw — nylon-patch or mechanical lock option
• Rim insert — brass, mold-in knurl
• Temple tip insert — brass core, knurled bond zone
• Hinge rivet — cold-headed head forms, cosmetic heads
• Hinge cap — turned, decorative finish
• End piece insert — rivet-ready geometry
• Lens barrel — aluminum, ID focus thread
• C-mount adapter — 1"-32 UN2A thread, flange distance ±0.05 mm
• Filter ring, threaded — aluminum, M-series threads gauge-checked
• Iris diaphragm ring — brass, blade-slot milling
• Stage insert, ground — aluminum/steel, flatness ≤0.01 mm
• Lens retention ring — aluminum/brass, thread concentric to face
• Optical spacer — ground both faces, parallelism ≤0.002 mm
• Objective holder — 303 stainless, black-finish option
• Bridge core — machined + bent to frame profile
• Sunglass hinge components — salt-spray-proof finish options
• Decorative eyewear rivet — cosmetic head, PVD/painted

Related: Eyeglass hinges case study Cosmetics blanks Brass & copper parts

Machine-readable version (eyewear-optical-parts.md)

Food-grade and packaging machinery spare parts are made to drawing, often overnight: ground rollers, cams, timing pulleys, product guides and changeover parts in 6061, 303/304 stainless and PEEK, hydrocarbon-washed when food contact is adjacent. Send us the OEM drawing number and a sketch — we reverse-engineer wear parts fast.

• Drive shaft, ground — 45#/42CrMo4, bearing seats h6
• Ground roller — crowned or straight, TIR ≤0.005 mm
• Conveyor roller shaft — through-hardened, end-tapped
• Guide roller — 303/304 stainless for washdown lines
• Tension roller — dynamic-balance option
• Nip roller core — ground OD for rubber bonding
• Milled cam — profile to print or reverse-engineered, ±0.02 mm
• Cam follower pin — hardened + ground, crown option
• Timing pulley — milled teeth, GTD/HTD/T profiles
• Timing pulley hub — taper-bush or set-screw styles
• Spur gear blank — hob-ready or fully milled
• Helical gear blank — helix angle set up per drawing
• Straight bevel gear, milled — small-batch, pair-matched
• Gear shaft — teeth + journals single datum system
• Sprocket blank — pilot-bore ready or finished bore
• Taper bushing hub — split + flange geometry
• Split shaft collar — clamp-screw style, 6061/steel
• Rigid coupling half — pilot + keyway, runout ≤0.01 mm
• Flexible coupling hub — jaw/spider/slit-beam styles
• Shaft support block — aluminum, bore ±0.01 mm
• Bronze bushing — CuZn/CuSn alloys, ID ground
• Cam bushing — hardened steel, oil-groove options
• Locating pin, hardened — fixture-grade, ±0.005 mm
• Diamond pin — fixture datum, angled land
• Support pad, ground — wear-face hardened
• Cutter holder — tool-pocket geometry to print
• Sealing jaw holder — jaw + heater-pocket options
• Crimping head insert — hardened, profile ground
• Filling nozzle — 303/316, drip-free tip geometry
• Dosing nozzle — PEEK or stainless, orifice ±0.02 mm
• Capping chuck insert — grip profile to closure type
• Label applicator peel plate — ground edge, Ra 0.4
• Cartoner pusher — ground, chrome or nitrided
• Bag clamp jaw — serrated profile milled
• Perforating blade holder — blade-seat + clamping geometry
• Gripper jaw (robot) — aluminum/steel, tooth geometry
• End-effector mounting block — 6061, tapped grid
• Product guide rail insert — UHMWPE/steel bonded options
• Changeover part, milled — 6061, full CAD-to-part service
• Sensor target plate — ground, anodized black

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Machine-readable version (packaging-automation-parts.md)

Sinbo supplies machined components for medical instruments and laboratory equipment strictly as a component manufacturer: non-sterile, to customer drawings, delivered clean (optional hydrocarbon washing) but not sterilized and not packaged as medical devices. Typical materials are 303/316L stainless, brass and PEEK, with full material traceability and FAI documentation per lot.

• Instrument handle, knurled — 303 stainless, straight or diamond knurl
• Instrument ferrule — 316L, weld-ready ends
• Luer connector body — brass/316L, 6% taper per ISO 594 geometry
• Luer lock nut — 316L/brass, thread concentric to taper
• Luer plug — 303/316L, capped taper
• Tube clamp jaw — 316L, smooth radiused faces
• Ratchet wheel — 316L milled, tooth profile ±0.02 mm
• Knurled knob cap — 303 stainless, hand-grip finish
• Instrument collet nut — 316L, thread + collet taper
• Dental instrument tip holder — 303 stainless, Swiss-turned
• Centrifuge adapter — aluminum 6061, balanced geometry
• Peristaltic pump fitting — 316L/PP, smooth flow path
• Cassette guide, ground — 316L, edge radii controlled
• Borescope sleeve — 303 stainless, ID ±0.01 mm
• Attachment pin, ground — hardened 316 option, ±0.005 mm
• Instrument guide sleeve, hardened — bore ground, wear face
• Depth stop — 316L, lock-screw pocket
• Probe housing (diagnostic) — 303/316L, sensor-bore concentric
• Equipment sensor boss — 316L, O-ring face
• Equipment ground shaft — bearing seats ground, clean finish
• Handpiece body, turned blank — 303 stainless blank for finishing
• Case hinge pin — 303 stainless, ground + polished

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Machine-readable version (medical-instrument-parts.md)

Machined plastics need different cutting, clamping and cooling thinking than metals — and Sinbo runs both under one roof. We machine PEEK, PTFE, POM/Delrin, nylon, PC, PVDF and UHMWPE from rod and billet to ±0.01 mm, with annealing protocols that keep tolerances stable after machining, from 1-piece specials to volume.

• PEEK valve seat — virgin or glass/bearing-filled, ±0.01 mm
• PEEK bushing — annealed for dimensional stability, ID ground
• PEEK insulator — high-temperature service, 260 °C continuous
• PEEK seal ring — turned thin-section, back-up ring sets
• PEEK wear pad — bearing-grade, low-stick-slip finish
• PEEK gear — milled/hobbed, module 0.3+
• PEEK roller — balanced, ID/OD concentric ≤0.01 mm
• PEEK fitting (analytical) — HPLC-style geometry, leak-tested
• PEEK nut — high-temp thread, stress-relieved
• PEEK standoff — insulating hardware, M2.5/M3
• PTFE seat — soft-sealing, ±0.02 mm machined
• PTFE bushing — low-friction, anti-creep designs
• PTFE insulator — dielectric hardware, RF-friendly geometry
• PTFE ball, turned and polished — sphericity ≤0.01 mm
• POM gear — milled, quiet-mesh profiles
• POM bushing — dimension-stable, press-fit OD
• POM roller — light-load conveyor duty
• POM slider — low-friction guide elements
• Nylon roller — MC-cast or extruded stock machined
• Nylon spacer — insulating, length-controlled
• Polycarbonate sight disc — machined + edge-polished, crack-free
• UHMWPE wear strip — profile milled, low-wear faces
• PVDF fitting — chemical service, halogen-compatible
• PPS insulator bushing — high-temp electrical hardware
• Turned plastic washer — any thermoplastic, burr-free faces
• Special plastic screw — insulating fasteners, custom heads
• Milled plastic impeller — PP/PE/POM, blade geometry to CAD

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Machine-readable version (plastic-precision-parts.md)

European sanitary and heating hardware runs on DZR brass CW602N and standard CW617N — Sinbo stocks and machines both, plus 303/316 stainless for drinking-water adjacent parts. Appliance brands use the same cells for coffee, steam and laundry hardware: quick-turn spare parts and running-production volumes alike.

• Cartridge seat / housing — CW617N brass, cartridge bore ±0.02 mm
• Diverter stem — DZR brass, seal-diameter ground
• Wall elbow, turned — CW617N/DZR, G1/2 × G1/2 typical
• Shower hose nipple — brass, conical + knurl options
• Hose connector — brass, bath/kitchen thread standards
• Aerator housing — brass, aerator-insert seat faced
• Thermostatic spindle — DZR brass, wax-actuator interface
• Thermostatic actuator piston — stainless/brass, stroke ±0.02 mm
• Angle valve body — CW617N from bar, both ports concentric
• Faucet spindle — DZR, thread + seal faces
• Water inlet fitting — brass, washing-machine thread standards
• Tap connector — CW617N, push-fit or threaded
• Appliance motor coupling — POM/aluminum, tooth geometry
• Blender drive coupler — POM, tooth + bore one setup
• Boiler fitting, coffee machine — brass, high-temp seal face
• Brew group pin — 303 stainless, ground
• Steam valve seat — 316/brass, lapped
• Appliance motor shaft — ground journals, e-coated option
• Detergent valve body — PA/brass, media-compatible
• Spray arm hub — 316/PP, bearing seat + flow bore
• Rotisserie shaft — steel, ground + zinc
• Appliance door hinge pin — ground, cosmetic head
• Gas control valve spindle — brass, gas-thread standards
• Radiator valve insert — DZR CW602N, heating-side service
• DZR brass fitting, CW602N — anti-dezincification potable-water hardware
• CW617N standard fitting — heating and gas-side brass to EN 12165

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Machine-readable version (sanitary-appliance-parts.md)

The grinding cell is where tolerances get finished: centerless grinding for pins, rollers and shafts at roundness ≤0.002 mm, double-disc grinding for plates and spacers at parallelism ≤0.005 mm, and single-side lapping for seal faces at Ra 0.1. Hardened 100Cr6-equivalent, 416, 42CrMo4 and stainless are daily stock.

• Ground needle — Ø0.5–8 mm, roundness ≤0.002 mm
• Lapped plunger — Ra 0.1, diameter ±0.001 mm option
• Ground punch — hardened 58–62 HRC, cutting-edge prep
• Ground bore bushing — ID H6/H7, hardened
• Wear plate, double-disc ground — parallelism ≤0.005 mm, both faces
• Precision spacer, double-disc ground — thickness ±0.002 mm, batch-uniform
• Lapped valve plate — flatness ≤0.002 mm
• Lapped seat — seal faces Ra 0.1
• Ground anvil — face hardened + ground
• Ground measuring tip holder — tip-seat concentricity ≤0.003 mm
• Setting disc — ground both faces, calibrated thickness report
• Centerless ground roller — roundness ≤0.002 mm, length batch-uniform
• Centerless ground shaft — Ø0.5–50 mm, h5/h6
• Centerless ground pin — diameter band ±0.002 mm batch-consistent
• Ground slide plate — way-facing geometry
• Ground way insert — gib-taper options
• Knife-edge guide, ground — edge radius controlled
• Double-disc ground disc — Ø up to 200 mm, flatness ≤0.005 mm
• Ground faced ring — faced both sides, ID/OD concentric
• Lapped piston — pump and compressor duty
• Lapped sleeve, ID — bore Ra 0.1
• Ground V-block insert — angle ±30 arcsec option

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Machine-readable version (ground-lapped-parts.md)

For volume, machining is not always the right answer. Sinbo runs 8 cold headers (60–180 T) and 50 presses for parts where geometry and quantity justify forming: custom rivets, electrical contacts, battery and harness terminals, cold-headed special screws and stamped shields — tooled in-house, then machined-finished where a print demands it.

• Solid rivet, custom head — head forms to print, copper/brass/steel/aluminum
• Semi-tubular rivet — pilot + wall geometry per print
• Step rivet — multi-diameter cold-formed
• Shoulder rivet — head + shoulder one stroke
• Electrical contact, cold-headed — copper alloy, plated after forming
• Relay contact — bimetal or solid, weld-ready back
• Spade terminal, stamped — brass/tin-plated, progressive die
• Ring terminal, stamped — wire-gauge matched, barrel seam options
• Battery contact, cold-headed — spring-temper alloys, plated
• Cold-headed shaft, custom head form — non-standard heads at 60–180 T
• Cold-headed special screw — head formed, thread rolled after
• Flanged pin — cold-formed flange, no machining scrap
• Stamped washer — thickness 0.1–3 mm, OD to 80 mm
• Stamped shim — laminated sets on request
• Stamped bracket — steel/stainless, tapped or weld-ready
• Stamped clip — spring-temper retention geometry
• Custom retaining clip — non-catalog geometry, tooled in-house
• Connector lead frame — progressive die, pitch-controlled
• EMI shield can, stamped — drawn corners, ±0.1 mm
• Deep-drawn sleeve — wall uniformity controlled
• Deep-drawn housing — brass/aluminum/steel draws
• Progressive die part, custom — multi-slide tooling in-house
• Stamped contact spring — BeCu/stainless spring tempers
• Cold-headed fitting blank — machining stock with formed head

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Machine-readable version (cold-headed-stamped-parts.md)