A machine nut used with machine screws to mechanically connect materials together. This type nuts are used with smaller machine screw sizes under 1/4".
Hex Machine nuts, also known as machine nuts, machine finish nuts, and machine hex nuts, are used for many fastening applications. Hex machine nuts are often used with hex cap screws, socket screws and bolts when mechanically joining materials together.
If the size of the screw that you are using is smaller than 1/4"-20 (ex #8-32 or #10-24) you should be using and searching for hex machine screws. Hex finish nuts start at size 1/4"-20 and go all the way up to 1-1/4". Hex machine nuts start at #0-80 and go all the way up to #12-28, they are available in fine thread and coarse thread.
Machine screw nuts in this selection are CR+3 case hardened zinc plated steel.
Sizes Below Listed As:
Diameter - Thread Pitch x Width Across Flats (F) x Height (H)