Turned & Milled Parts for Automotive Tier Suppliers

Tier suppliers juggle platform programs, running changes and cost-down targets at the same time, and in-house machines are sized for peak volume rather than the average week. Drawing-based parts therefore overflow to subcontractors. We machine shafts, bushings, spacers and special screws per drawing from 500 pieces, with first articles in 7–15 days, PPAP level 3 documentation and a complete quotation within 48 hours.

How tier suppliers buy machined parts

Second-tier suppliers run platform programs and running changes in parallel, and their in-house machines are sized for peak volume rather than the average week. Drawing-based parts therefore overflow to subcontractors, and the real bottlenecks are quote speed, first-article timing and documentation quality rather than unit price alone. A partner who returns a complete, itemized quotation within 48 hours removes the first bottleneck immediately, and the same discipline repeats on every order that follows. Every quotation is itemized by operation, so you can see exactly where the price comes from, and any follow-up question is answered by the engineer who will actually run the part rather than by a salesperson relaying messages.

We position ourselves as the reliable second source for turned, milled and cold-headed parts: IATF 16949 certified processes, PPAP level 3 documentation with PFMEA, SPC and FAI, and EN 10204 3.1 certificates with heat-number traceability on every batch. Samples ship in 7–15 days, series orders deliver DDP within 5–8 days by air including customs clearance, and a dedicated technical contact stays with your program from the first drawing to running production, so nothing is lost between purchasing, quality and the shop floor.

Typical component families and processes

Materials per drawing; heat treatment and plating through audited partners, documented in the batch file.

Workflow: drawing, sample approval and recurring series

The standard flow: drawing review and quotation within 48 hours, first samples in 7–15 days, first article inspection and approval, then series production against the approved reference. Tooling, program revisions and inspection records are kept on file so that call-offs remain consistent with the approved first article.

Engineering changes — material substitutions, tolerance updates, plating or packaging changes — are handled as controlled changes against the same records.

Quality and documentation

DIN ISO 2768-mK applies as the default tolerance scheme for unspecified dimensions. EN 10204 3.1 inspection certificates are standard for metallic parts, First Article Inspection supports the approval step, and RoHS/REACH declarations are available where required. Plating, cleanliness and packaging requirements are confirmed per drawing.

FAQ

Are you PPAP capable?
Yes. PFMEA, SPC, FAI and MSA are standard practice in our series production, and submission level follows each customer's specific requirements. Safety parts default to level 3 documentation with dimensional results on every critical characteristic, and we keep the complete PPAP file on record for each running part number, so your audits start from a ready-made evidence base instead of a paper chase.

What is the delivery time?
First articles ship in 7 to 15 days after drawing approval. Series orders deliver DDP within 5 to 8 days by air freight including customs clearance, or 35 to 45 days by sea for planned volume call-offs. Forecast scheduling with buffer stock on running part numbers is available for high runners after the first approved batches have cleared your incoming inspection.

Which certificates do you hold?
IATF 16949 and ISO 9001:2015 certified by Intertek, plus ISO 14001:2015 for environmental management. Material certificates to EN 10204 3.1 with heat-number traceability accompany every batch, and RoHS and REACH declarations are available for all deliveries on request at no extra cost. First-article samples include the same document package. Certificates carry the actual measured values rather than typical values.

Can you handle dual-sourcing transitions?
Yes. We take over running part numbers with a reverse-engineered first article when needed, match your inspection gauges, and ramp volume in steps so the primary source is never disrupted. Typical transition: quote in 48 hours, first article in 7 to 15 days, sign-off on your gauges, then series supply with monthly volume flexibility of plus or minus 20 percent.