Nuts come in a range of standard sizes, particularly within the Imperial (US) measurement system. Based on common dimensions, you will frequently encounter sizes expressed as numbered sizes or fractional inches.
According to standard Imperial (US) nut dimensions, popular sizes include:
- #0
- #1
- #2
- #3
- #4
- #5
- #6
- #8
- #10
- #12
- 1/4"
- 5/16"
- 3/8"
- 7/16"
- 1/2"
- 9/16"
- 5/8"
- 3/4"
- 7/8"
- 1"
These sizes represent the nominal diameter of the bolt or screw the nut is designed to fit. The list covers common dimensions used across various nut types such as HEX, HEX Jam, Serrated Flange, and Nylon Lock nuts. Sizes below 1/4" are typically represented by a number, where a higher number generally indicates a larger diameter up to #12. Sizes 1/4" and above are given as fractional inches, directly indicating the bolt diameter.
