A stainless compression spring for key retention mechanisms, where the spring returns the key or the retaining element after each operation. Stainless is specified because lock and key mechanisms sit in doors, panels and outdoor cabinets that see moisture.
Lock bodies trap condensation. A stainless spring keeps working when a plated one would have seized in place.
A key retainer that returns weakly makes a lock feel faulty, so force consistency is the governing requirement.
Fine wire coiling on automatic machines keeps small springs identical, which is what a key mechanism depends on.
Fit without lubricating grease unless the lock design calls for it. Grease traps dust inside a lock body and causes more sticking than it prevents.
Lock springs seizing with corrosion inside the lock body
Key mechanisms that stop returning cleanly and get reported as broken locks
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 | Compression 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 zinc plated equivalent, stainless costs slightly more on a part this small and removes the corrosion risk that causes most lock spring failures.
Yes. Send the lock or the spring and we will reproduce the part.
Not always, but locks are hard to service once installed, and the cost difference on a small spring is minor against a service call.
Wire from 0.1 mm upwards, which covers the full range of lock mechanism springs.
Send your drawing, dimensions or a sample. We will confirm the specification and come back with a price and a lead time.