Screw size control table for hex wrenches in the Inch system


inch
screw specification
Hex socket cap screw
hex socket flat head
hex socket button head
Shoulder screw
0.028
0#
0.035
0#
0#
1#, 2#
0.05
0#
1#, 2#
1#, 2#
3#, 4#
1/16
1#
3#, 4#
3#, 4#
5#, 6#, (1/8)
5/64
2#, 3#
5#, 6#
5#, 6#
8#, (5/32)
3/32
4#, 5#, (1/8)
8#
8#
10#, (3/16)
7/64
6#
1/8
(5/32)
10#, (3/16)
10#, (3/16)
1/4, (1/4)
1/4
9/64
8#
5/32
10#, (3/16)
1/4, (1/4)
1/4, (1/4)
5/16, (5/16)
5/16
3/16
1/4, (1/4)
5/16, (5/16)
5/16, (5/16)
3/8, (3/8)
3/8
7/32
5/16, (5/16)
3/8, (3/8)
3/8, (3/8)
7/16
1/4
7/16, (7/16)
7/16, (7/16)
1/2, (1/2)
1/2
5/16
3/8, (3/8, 7/16)
1/2, (1/2)
1/2, (1/2)
5/8
5/8
3/8
7/16, 1/2, (1/2)
5/8, (5/8)
5/8, (5/8)
3/4
3/4
7/16
1/2
5/8, (5/8)
3/4
7/8
1
9/16
3/4, (3/4, 7/8)
7/8
1, 11/8
5/8
(1)
1
11/4, 13/8