Screw has many various ,Machine Scrw,tapping screw,sheet metal tapping screw .

Screw springs is not belong to common springs,but it'smetal springs of hardware products.

1.Material:carbon steel;spring steel;stainless steel,alloy steel.
2.Wire Dia.:0.01mm-10mm
3.ISO9001 certificate.
4.We can do OEM.
5.Surface treatment:Zinc,Nickel,silver,golden,tin,powder coating.
6.Applications: Automotive, medical device, electronics, toy,etc