We make special parts to your drawing for sizes, head forms or materials not in the catalog, from 5,000-piece batches.
By quotation
When a standard part does not meet your need, custom manufacturing steps in. Our cold-forging line, with six-station presses, forms complex head shapes from M5 to M24 in one stroke; for larger or more complex geometries we have CNC lathes and machining centers.
Process
- Drawing or sample review, manufacturing feasibility (48 hours)
- Tool design and prototype, 10-15 business days
- Approval with PPAP / First Article Inspection (FAI) report
- Serial production with lot-level traceability
We can process steel, stainless steel, brass and aluminum alloys. A PPAP file is prepared for our automotive customers under IATF 16949.
Scope of service
- Minimum 5,000-piece batches
- Feasibility in 48 hours
- PPAP / FAI report
- Steel, stainless, brass, aluminum
Custom Manufacturing to Drawing — get a quote
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Frequently asked questions
What is the difference between DIN and ISO standards?
Older German standards such as DIN 933 and DIN 931 have largely been replaced by ISO 4017 and ISO 4014. Most dimensions are the same; for M10 and M12 the wrench size is 17/19 mm in DIN and 16/18 mm in ISO. State the standard clearly when ordering.
What do 8.8 and 10.9 mean?
The first number is tensile strength divided by 100 (8 → 800 MPa), the second the yield/tensile ratio (0.8 → 640 MPa yield). 10.9: 1,000 MPa tensile, 900 MPa yield; 12.9: 1,200 MPa tensile, 1,080 MPa yield.
Which coating should I choose?
For indoor use, electro-galvanizing (5-12 µm); for outdoor and steel construction, hot-dip galvanizing; for high-strength (10.9 / 12.9) and corrosion-resistant applications, Geomet. Electrolytic coating carries a hydrogen embrittlement risk for 10.9 and above.
Is there a minimum order quantity?
Catalog products are sold by carton (usually 100-1,000 pieces). The minimum batch for special manufacturing is 5,000 pieces. Minimum purchase terms for dealers vary by tier.
How do I get certificates?
An EN 10204 3.1 certificate is issued for every lot. Enter the lot number on the product label into the certificate lookup tool on our site to download the PDF report. For 3.2, you must request it with the order.