A double hook extension spring with a bright white plated finish, made to drawing. White plating is chosen where the spring sits against white or light coloured equipment, in appliances, medical-adjacent furniture and light industrial housings.
A white finish disappears against white housings where a dark spring would be conspicuous.
Free length, coil count and hook style are produced to your drawing rather than picked from a range.
White plating is a functional protective finish, not only a cosmetic one.
Handle with clean gloves during assembly. Bright plated finishes show fingerprints, which matters on parts visible in a finished white product.
Dark springs standing out against white equipment at final inspection
Finishes chosen for looks alone that offer no corrosion protection
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 | Tension 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 the black plated version of the same spring, the choice is purely visual. Both offer comparable mechanical performance in their respective wire sizes.
White zinc plating is the bright variant of zinc plating. It gives similar protection with a lighter appearance.
Ageing depends on the environment and the passivation used. Tell us where the part lives and we will specify accordingly.
Yes. Mixed ends are produced routinely.
Send your drawing, dimensions or a sample. We will confirm the specification and come back with a price and a lead time.
