REGULAR SQUARE NUTS
DIMENSIONS
All Dimensions in Inches
Size Across Flats Thickness
1/4-20 7/16 7/32
5/16-18 9/16 17/64
3/8-16 5/8 21/64
7/16-14 3/4 3/8
1/2-13 13/16 7/16
5/8-11 1 35/64
3/4-10 1-1/8 21/32
7/8-9 1-5/16 49/64
1-8 1-1/2 7/8
1-1/8-7 1-11/16 1
1-1/4-7 1-7/8 1-3/32
1-1/2-6 2-1/4 1-5/16
2-4-1/2 3 1-3/4