A nickel plated torsion spring made to an automotive customer's drawing, for interior, trim and accessory mechanisms. Automotive work is defined less by the spring itself than by the requirement that batch one thousand behaves exactly like the approved sample.
Non-standard and OEM drawings are the normal basis for production, with the approved sample held as the reference for later batches.
Interior mechanisms are seen and handled, and nickel holds its appearance under both better than zinc.
Tensile strength testing and magnetic powder flaw detection are applied to catch material and surface defects before parts leave the factory.
Reference the approved sample in your incoming inspection instruction. Where a drawing and a sample disagree, tell us before production rather than after, so the reference can be corrected.
Batch to batch force variation that fails a tier supplier's incoming inspection
Springs that corrode in cabin humidity and mark adjacent trim
Dimensional and load figures are set per order against your drawing or sample, so they are marked TBC rather than filled with catalogue numbers.
| Product Type | Torsion Springs |
|---|---|
| Raw Material Options | Stainless steel, Spring steel, Carbon steel, 65Mn, Music wire |
| Wire Diameter Range | 0.1-8 mm |
| Surface Treatment Options | Zinc plating, Nickel plating, Silver plating, Gold plating, Tin plating, Galvanizing in various colours, Dacromet, Black oxide, Phosphating |
| Standard | ISO, non-standard and OEM drawings |
| Processing Route | Material sourcing → Coiling and forming → Heat treatment → Surface treatment → Quality inspection → Packing → Shipping |
| Inspection Equipment | Grinding and shot peening machinery; Precision tensile strength testers; Magnetic powder flaw detectors |
| Packing | Plastic bags, cartons or pallets, or packing to your own specification |
| Payment Terms | L/C, T/T, D/A, D/P, Western Union, 30% deposit before production, 70% balance before shipment |
| Lead Time | 7-15 days after the order is confirmed |
| Minimum Order Quantity | Quoted per part — tell us your requirement (TBC) |
| Dimensions and Load Rating | Made to your drawing or sample (TBC per part) |
Every batch follows the same seven step route, with tensile testing and magnetic powder flaw detection carried out before packing.
Available in Stainless steel, Spring steel, Carbon steel, 65Mn, Music wire, in wire from 0.1-8 mm, with any of our nine surface finishing routes. Geometry, end treatment and finish are all specified per order.
ISO 9001, SGS certificate and RoHS report (stated on the legacy site, certificates pending re-confirmation). Certificate copies are sent on request once re-confirmed.
Against a general industrial torsion spring of the same geometry, the automotive version carries the same steel but a tighter approval and inspection regime, which is what the price difference represents.
Yes. Every new part starts with samples, and the approved sample is the reference against which production batches are checked.
Dimensional checking against the reference sample, precision tensile strength testing and magnetic powder flaw detection.
Consistency comes from programmed coiling and a fixed heat treatment and finishing route. Both are recorded against the part.
Send your drawing, dimensions or a sample. We will confirm the specification and come back with a price and a lead time.
