Horizontal broaching refers to the type of machine that is used to broach a piece part. The machines used in this process were the first ones to be developed, and are still the most common of all. Mechanical Devices Company has been in the broach business for over 50 years. We also have a supplier network to source shaping, splining or large broaching to outside suppliers if needed. Our operation is supported by horizontal broaching and typical forms of cut include internal keyways, splines, D drives and etc.