Pronged springs offer a self-piercing steel alternative to plastic fasteners such as fir tree buttons.

Pronged Springs

These Pronged Springs are self-piercing and designed to be used with low-density materials. They accommodate a wide range of applications and are ideal for assembling fascias to frames such as in the upholstery industry.

Typical applications include upholstered furniture.

Material - Austempered Carbon Steel.  [....]

More details