KS B 1012, JIS B 1180 Unit: mm
Nominal pitch H H1 B C
Coarse Fine Basic Tolerance Basic Tolerance Basic Tolerance
Finish Semi-Finish Regular Finish Semi-Finish Regular Finish Semi-Finish Regular
M6x1 - 5 0-0.30 0-0.48 0.6 3.6 0-0.30 0-0.48 0.6 10 0-0.2 0-0.6 0-0.6 11.5
(M7x1) - 5.5 4.2 11 0-0.25 0-0.7 0-0.7 12.7
M8x1.25 M8x1 6.5 0-0.36 0-0.58 0.8 5 13 15
M10x1.5 M10x1.25 8 6 17 19.6
M12x1.75 M12x1.25 10 7 0-0.36 0-0.58 0.8 19 0-0.8 0-0.35 0-0.35 21.9
(M14x2) (M14x1.5) 11 0-0.43 0-0.70 0.9 8 22 25.4
M16x2 M16x1.5 13 10 24 27.7
(M18x2.5) (M18x1.5) 15 11 0-0.43 0-0/70 0.9 27 31.2
M20x2.5 M20x1.5 16 12 30 34.6
(M22x2.5) (M22x1.5) 18 13 35 0-1.0 0-0.4 0-0.4 37
M24x3 M24x2 19 0-0.52 0-0.84 1.0 14 36 41.3
(M27x3) (M27x2) 22 16 41 47.3
M30x3.5 M30x2 24 18 46 53.1
(M33x3.5) (M33x2) 26 20 0-0.52 0-0.84 1.0 50 57.7
M36x4 M36x3 29 21 55 0-1.2 0-0.45 0-0.45 63.5
(M39x4) (M39x3) 31 0-0.62 0-1.0 1.2 23 60 69.3
M42x4.5 - 34 25 65 75
M45x4.5 - 36 27 70 80.8
M48x5 - 38 29 75 86.5
M52x5 - 42 31 0-0.62 0-1.0 1.2 80 92.4
M56x5.5 - 45 34 85 0-0.56 0-1.4 0-1.4 98.1
(M60x5.5) - 48 36 90 104
M64x6 - 51 0-0.74 0-1.2 1.5 38 95 110
(M68x6) - 54 40 100 115
- M72x6 58 42 105 121
- (M72x6) 61 46 110 127
- M80x6 64 48 115 133
- (M85x6) 68 50 120 139
- M90x6 72 54 0-0.74 0-1.2 1.5 130 0-0.65 0-1.6 0-1.6 150
- (M95x6) 76 57 135 156
- M100x6 80 60 145 167
- (M105x6) 84 0-0.87 0-1.4 1.8 63 150 173
- M110x6 88 65 155 179
- (M115x6) 92 69 165 191
- (M120x6) 96 72 170 196
- M125x6 100 76 180 208
- (M130x6) 104 78 185 0-0.7 0-1.8 0-1.0 214

ANSI B 18.2.1 Unit: mm
Nominal Size or Basic Major Dia of Thread B C H H Hex Nuts Specified Proof Load Jam Nuts
All Strength Levels
Width Across Liats Width Across Cimers Thickness Hex Nuts Thickness Hex Jam Nuts Up to 150.000 psi 150.000 psi and Grenter
Basic Max Min Max Min Basic Max Min Basic Max Min Runout of Bearring Face FIR Max
1/4
5/16
3/8
7/16
0.2500 0.3125 0.3750 0.4375 7/16 1/2 9/16 11/16 0.438 0.50 0.562 0.688 0.428 0.489 0.551 0.675 0.505 0.577 0.650 0.794 0.488 0.557 0.627 0.768 7/32 17/64 21/64 3/8 0.226 0.273 0.337 0.385 0.212 0.258 0.320 0.365 5/32 3/16 7/32 1/4 0.163 0.195 0.227 0.260 0.150 0.180 0.210 0.240 0.015 0.016 0.017 0.018 0.010 0.011 0.012 0.013 0.015
0.016

0.017

0.018
1/2
9/16
5/8
3/4
7/8
0.5000 0.5625 0.6250 0.7500 0.8750 3/4
7/8 15/16 1-1/8 1-5/16
0.750 0.875 0.938 1.125 1.312 0.736 0.861 0.922 1.088 1.269 0.866 1.010 1.083 1.299 1.516 0.840 0.982 1.051 1.240 1.447 7/16 31/64 35/64 41/64 3/4 0.448 0.496 0.559 0.665 0.776 0.427 0.437 0.535 0.617 0.724 5/16 5/16 3/8 27/64 31/64 0.323 0.324 0.387 0.446 0.510 0.302 0.301 0.363 0.398 0.458 0.019 0.020 0.021 0.023 0.025 0.014 0.015 0.016 0.018 0.020 0.019
0.020
0.021
0.023
0.025
1
1-1/8
1-1/4
1-3/8
1.0000
1.1250

1.2500
1.3750
1-1/2 1
11/16 1-7/8
2-1/16
1.500 1.688 1.875 2.062 1.450 1.631 1.812 1.994 1.732 1.949 2.165 2.382 1.653 1.859 2.066 2.273 55/64 31/32 1-1/16 1-11/64 0.887 0.994 1.094 1.206 0.831 0.939 1.030 1.138 35/64 39/64 23/32 25/32 0.575 0.639 0.751 0.815 0.519 0.579 0.687 0.747 0.027 0.030 0.033 0.036 0.022 0.025 0.028 0.031 0.027
0.030
0.033
0.036
1-1/2 1.5000 2-1/4 2.250 2.175 2.598 2.480 1-9/32 1.317 1.245 27/32 0.880 0.808 0.039 0.034 0.039