Machinery's Handbook, 31st Edition
1682
Nuts Hex High and Hex Slotted High Nuts SAE Standard J482a F H T H T
.016 Approx.
G
S
S
F
H
H
D .016 Approx.
G
A
Counterbore where specified
Width Across Flats, F
Width Across Corners, G
Slot Width, S
Nominal Size a or Basic Major Diameter of Thread
Basic
Max.
Min. 0.428 0.489 0.551 0.675 0.736 0.861 0.922 1.088 1.269 1.450 1.631 1.812 Min. 0.368 0.445 0.491 0.599 0.645 0.754 0.831 0.985 1.140 1.292 1.480
Max. 0.505 0.577 0.650 0.794 0.866 1.010 1.083 1.299 1.516 1.732 1.949 2.165 Max. 0.29 0.37 0.38 0.46 0.51 0.59 0.63 0.76 0.92 1.05 1.18
Min. 0.488 0.557 0.628 0.768 0.840 0.982 1.051 1.240 1.447 1.653 1.859 2.066 Min. 0.27 0.35 0.36 0.44 0.49 0.57 0.61 0.73 0.89 1.01 1.14
Min. 0.07 0.09 0.12 0.12 0.15 0.15 0.18 0.18 0.18 0.24 0.24 0.31
Max. 0.10 0.12 0.15 0.15 0.18 0.18 0.24 0.24 0.24 0.30 0.33 0.40
0.2500 0.3125 0.3750 0.4375 0.5000 0.5625 0.6250 0.7500 0.8750 1.0000 1.1250 1.2500
0.4375 0.5000 0.5625 0.6875 0.7500 0.8750 0.9375 1.1250 1.3125 1.5000 1.6875 1.8750
1 ∕ 4
7 ∕ 16
5 ∕ 16
1 ∕ 2
3 ∕ 8
9 ∕ 16
7 ∕ 16
11 ∕ 16
1 ∕ 2
3 ∕ 4 7 ∕ 8
9 ∕ 16
5 ∕ 8 3 ∕ 4 7 ∕ 8
15 ∕ 16
1 1 ∕ 8
1 5 ∕ 16
1
1 1 ∕ 2
1 1 ∕ 8 1 1 ∕ 4
1 11 ∕ 16
1 7 ∕ 8
Unslotted Thickness, T
Counterbore (Optional)
Thickness, H
Nominal Size a or Basic Major Diameter of Thread
Basic
Max. 0.382 0.461 0.509 0.619 0.667 0.778 0.857 1.015 1.172 1.330 1.520
Dia., A
Depth, D
0.2500 0.3125 0.3750 0.4375 0.5000 0.5625 0.6250 0.7500 0.8750 1.0000 1.1250 1.2500
0.266 0.328 0.391 0.453 0.516 0.594 0.656 0.781 0.906 1.031 1.156 1.281
0.062 0.078 0.094 0.109 0.125 0.141 0.156 0.188 0.219 0.250 0.281
1 ∕ 4
3 ∕ 8
5 ∕ 16
29 ∕ 64
3 ∕ 8
1 ∕ 2
7 ∕ 16
39 ∕ 64 21 ∕ 32 49 ∕ 64 27 ∕ 32
1 ∕ 2
9 ∕ 16
5 ∕ 8 3 ∕ 4 7 ∕ 8
1
1 5 ∕ 32 1 5 ∕ 16
1
1 1 ∕ 2
1 1 ∕ 8 1 1 ∕ 4
1 11 ∕ 16 0.312 a When specifying a nominal size in decimals, any zero in the fourth decimal place is omitted. Reprinted with permission. Copyright © 1990, Society of Automotive Engineers, Inc. All rights reserved. All dimensions are in inches. Threads are Unified Standard Class 2B, UNC or UNF Series. 1.710 1.666 1.34 1.29
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