Pin-Key Manufacturing Company

In 1944 an inventor, machinist, and businessman saw a new low cost way to de-burr machined parts, so Tumbling Supplies was born. Tumbling Supplies was built from an idea that was backed by core values.

Tumbling Supplies evolved into a manufacturer of headless dowel pins and machine keys (Pin-Key Mfg.) that are manufactured from our internally designed machines, which provides us the capability to efficiently produce your products. We specialize in producing small to mid size pins and keys with reliable quality at a low cost.