A second variant of our ground-end black coated carbon steel compression spring, in a different coil geometry. Having two established variants means many requirements can start from a proven part rather than from a blank sheet.
A different coil diameter and length combination covering requirements the first variant does not fit.
Both ends ground for flat seating, with the same black coated finish, so the two variants are consistent in a mixed assembly.
Starting from an established part shortens the path to an approved sample compared with a wholly new design.
Mark which variant is used at each position in your assembly drawing. Two similar springs with different rates in one product is a recurring source of assembly errors.
Designs forced to use an ill-fitting spring because the nearest standard part was the only option
Mixed finishes within one assembly when springs come from different sources
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.
The two black coated ground variants differ only in coil geometry. Choose whichever is closer to your requirement and we will adjust from there.
Coil geometry. Material, end treatment and finish are the same, so the two can be used alongside each other.
Yes. Both are reference parts, not fixed catalogue items.
Yes, both ends ground on both variants.
Send your drawing, dimensions or a sample. We will confirm the specification and come back with a price and a lead time.