HEX NUTS
 CLASS 2H HEAT TREATED
 ASTM A194-2H
All Dimensions in Inches
Basic
 Diameter
Across
 Flats
Thickness Basic
 Diameter
Across
 Flats
Thickness
1/4-20 1/2 15/64 1-8 1-5/8 63/64
5/16-18 9/16 19/64 1-1/8-8 1-13/16 1-7/64
3/8-16 11/16 23/64 1-1/4-8 2 1-7/32
7/16-14 3/4 27/64 1-3/8-8 2-3/16 1-11/32
1/2-13 7/8 31/64 1-1/2-8 2-3/8 1-15/32
5/8-11 1-1/16 39/64 1-5/8-8 2-9/16 1-19/32
3/4-10 1-1/4 47/64 1-3/4-8 2-3/4 1-23/32
7/8-9 1-7/16 55/64 2-8 3-1/8 1-31/32