Tag Archives: 4-40 machine screw

4-40 Set Screw Shopping Guide: Types, Sizes & Applications

Looking for a reliable way to fasten components without protruding heads? The 4-40 set screw is a compact yet essential hardware piece, favored by DIY enthusiasts, hobbyists, and professionals alike. This guide will help you navigate the options, ensuring you find the ideal 4-40 set screw for mechanical, electronic, or custom projects—unlocking precision and durability […]