This spring finds its use in fuse boxes for making reliable electrical contact. For optimal investment, springs in 8 different lengths are made with one adjustable stamping tool. Notice especially the very small slits in these springs! That is a challenge to make and maintain.
The counterpart, a tin plated brass stamped profile, in the different lengths, is also produced by KeyTec as well as the assembly of both these parts into a subassembly that our customer further assembles into a ready to market product.