Nuts

Internal Threads – Class 2B

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Nominal Size &
Threads / Inch &
Series Designation
Allow-
ance
Minor
Diameter
Pitch
Diameter
Major
Diameter
Min. Max. Min. Max. Tolerance Min.
0-80
1-64
1-72
2-56
2-64
UNF
UNC
UNF
UNC
UNF
0.0005
0.0006
0.0006
0.0006
0.0006
0.0465
0.0561
0.0580
0.0667
0.0691
0.0514
0.0623
0.0635
0.0737
0.0753
0.0519
0.0629
0.0640
0.0744
0.0759
0.0542
0.0655
0.0665
0.0772
0.0786
0.0023
0.0026
0.0025
0.0028
0.0027
0.0600
0.0730
0.0730
0.0860
0.0860
3-48
3-56
4-40
4-48
5-40
UNC
UNF
UNC
UNF
UNC
0.0007
0.0007
0.0008
0.0007
0.0008
0.0764
0.0797
0.0849
0.0894
0.0979
0.0845
0.0865
0.0939
0.0968
0.1062
0.0855
0.0874
0.0958
0.0985
0.1088
0.0885
0.0902
0.0991
0.1016
0.1121
0.0030
0.0028
0.0033
0.0031
0.0033
0.0990
0.0990
0.1120
0.1120
0.1250
5-44
6-32
6-40
8-32
8-36
UNF
UNC
UNF
UNC
UNF
0.0007
0.0008
0.0008
0.0009
0.0008
0.1004
0.104
0.111
0.130
0.134
0.1079
0.114
0.119
0.139
0.142
0.1102
0.1177
0.1218
0.1437
0.1460
0.1134
0.1214
0.1252
0.1475
0.1496
0.0032
0.0037
0.0034
0.0038
0.0036
0.1250
0.1380
0.1380
0.1640
0.1640
10-24
10-32
12-24
12-28
1/4-20
UNC
UNF
UNC
UNF
UNC
0.0010
0.0009
0.0010
0.0010
0.0011
0.145
0.156
0.171
0.177
0.196
0.156
0.164
0.181
0.186
0.207
0.1629
0.1697
0.1889
0.1928
0.2175
0.1672
0.1736
0.1933
0.1970
0.2224
0.0043
0.0039
0.0044
0.0042
0.0049
0.1900
0.1900
0.2160
0.2160
0.2500
1/4-28
5/16-18
5/16-24
3/8-16
3/8-24
UNF
UNC
UNF
UNC
UNF
0.0010
0.0012
0.0011
0.0013
0.0011
0.211
0.252
0.267
0.307
0.330
0.220
0.265
0.277
0.321
0.034
0.2268
0.2764
0.2854
0.3344
0.3479
0.2311
0.2817
0.2902
0.3401
0.3528
0.0043
0.0053
0.0048
0.0057
0.0049
0.2500
0.3125
0.3125
0.3750
0.3750
7/16-14
7/16-20
1/2-13
1/2-20
9/16-12
UNC
UNF
UNC
UNF
UNC
0.0014
0.0013
0.0015
0.0013
0.0016
0.360
0.383
0.417
0.446
0.472
0.376
0.395
0.434
0.457
0.490
0.3911
0.4050
0.4500
0.4675
0.5084
0.3972
0.4104
0.4565
0.4731
0.5152
0.0061
0.0054
0.0065
0.0056
0.0068
0.4375
0.4375
0.5000
0.5000
0.5625
9/16-18
5/8-11
5/8-18
3/4-10
3/4-16
UNF
UNC
UNF
UNC
UNF
0.0014
0.0016
0.0014
0.0018
0.0015
0.502
0.527
0.565
0.642
0.682
0.515
0.546
0.578
0.663
0.696
0.5264
0.5660
0.5889
0.6850
0.7094
0.5323
0.5732
0.5949
0.6927
0.7159
0.0059
0.0072
0.0060
0.0077
0.0065
0.5625
0.6250
0.6250
0.7500
0.7500
7/8-9
7/8-14
1-8
1-12
1-14
UNC
UNF
UNC
UNF
UNS
0.0019
0.0016
0.0020
0.0018
0.0017
0.755
0.798
0.865
0.910
0.923
0.778
0.814
0.890
0.928
0.938
0.8028
0.8286
0.9188
0.9459
0.9536
0.8110
0.8356
0.9276
0.9535
0.9609
0.0082
0.0070
0.0088
0.0076
0.0073
0.8750
0.8750
1.0000
1.0000
1.0000
11/8-7
11/8-8
11/812
11/4-7
11/4-8
UNC
UN
UNF
UNC
UN
0.0022
0.0021
0.0018
0.022
0.0021
0.970
0.990
1.035
1.095
1.115
0.998
1.015
1.053
1.123
1.140
1.322
1.0438
1.0709
1.1572
1.1688
1.0416
0.0528
1.0787
1.668
1.1780
0.0094
0.0090
0.0078
0.0096
0.0092
1.1250
1.1250
1.1250
1.2500
1.2500
11/4-12
1 3/8-6
1 3/8-8
1 3/8-12
11/2-6
UNF
UNC
UN
UNF
UNC
0.0018
0.0024
0.0022
0.0019
0.0024
1.160
1.195
1.240
1.285
1.320
1.178
1.225
1.265
1.303
1.350
1.1959
1.2667
1.2938
1.3209
1.3917
1.2039
1.2771
1.3031
1.3291
1.4022
0.0080
0.0104
0.0093
0.0082
0.0105
1.2500
1.3750
1.3750
1.3750
1.5000
11/2-8
11/2-12
1 5/8-8
1 3/4-5
1 3/4-8
UN
UNC
UN
UNC
UN
0.0022
0.0019
0.0022
0.0027
0.0023
1.365
1.410
1.490
1.534
1.615
1.390
1.428
1.515
1.568
1.640
1.4188
1.4459
1.5438
1.6201
1.6688
1.4283
1.4542
1.5535
1.6317
1.6786
0.0095
0.0083
0.0097
0.0116
0.0098
1.5000
1.5000
1.6250
1.7500
1.7500
1 7/8-8
2-41/2
2-8
2 1/4-4.5
2 1/4-8
UN
UNC
UN
UNC
UN
0.0023
0.0029
0.0023
0.0029
0.0024
1.740
1.759
1.865
2.009
2.115
1.765
1.795
1.890
2.045
2.140
1.7938
1.8557
1.9188
2.1057
2.1688
1.8038
1.8681
1.9289
2.1183
2.1792
0.0100
0.0124
0.0101
0.0126
0.0104
1.8750
2.0000
2.0000
2.2500
2.2500
2 1/2-4
2 1/2-8
2 3/4-4
2 3/4-8
3-4
UNC
UN
UNC
UN
UNC
0.0031
0.0024
0.0032
0.0025
0.0032
2.229
2.365
2.479
2.615
2.729
2.267
2.390
2.517
2.640
2.767
2.3376
2.4188
2.5876
2.6688
2.8376
2.3511
2.4294
2.6013
2.6796
2.8515
0.0135
0.0106
0.0137
0.0108
0.0139
2.5000
2.5000
2.7500
2.7500
3.0000
3-8
3 1/4-4
31/4-8
3 1/2-4
31/2-8
UN
UNC
UN
UNC
UN
0.0026
0.0033
0.0026
0.0033
0.0026
2.865
2.979
3.115
3.229
3.365
2.890
3.017
3.140
3.267
3.390
2.9188
3.0876
3.1688
3.3376
3.4188
2.9299
3.1017
3.1801
3.3519
3.4303
0.0111
0.0141
0.0113
0.0143
0.0115
3.0000
3.2500
3.2500
3.5000
3.5000
3 3/4-4
3 3/4-8
4-4
4-8
UNC
UN
UNC
UN
0.0034
0.0027
0.0034
0.0027
3.479
3.615
3.729
3.865
3.517
3.640
3.767
3.890
3.5876
3.6688
3.8376
3.9188
3.6021
3.6805
3.8523
3.9307
0.0145
0.0117
0.0147
0.0119
3.7500
3.7500
4.0000
4.0000

 

 

Two Piece Hex Cap Nuts Click here toRequest a quote.

Size Across the Flats Overall Hght.
6-32
8-32
10-24
10-32
1/4-20
5/16-18
3/8-16
1/2-13
5/8-11
5/16
5/16
3/8
3/8
7/16
9/16
5/8
3/4
15/16
1/4
1/4
9/32
11/32
21/64
3/8
27/64
9/16
51/64
Two Piece Hex Cap Nuts

 

Hex Coupling Nuts
Dimensions of Hex Coupling Nuts

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Nom
Size or Basic
Major Dia. of Thread
F G H
Width Across
Flats
Width
Across
Corners
Length
Basic Max Min Max Min Basic Max Min
1/4
5/16
3/8
1/2
5/8
3/4
1
0.2500
0.3125
0.3750
0.5000
0.6250
0.7500
1.0000
3/8
1/2
9/16
3/4
15/16
1-1/8
1-1/2
0.375
0.500
0.562
0.750
0.938
1.125
1.500
0.365
0.489
0.551
0.736
0.922
1.088
1.450
0.433
0.577
0.650
0.866
1.083
1.299
1.732
0.416
0.557
0.628
0.839
1.051
1.240
1.653
3/4
15/16
1-1/8
1-1/2
1-7/8
2-1/4
3
0.76
0.95
1.13
1.51
1.89
2.27
3.03
0.74
0.93
1.11
1.49
1.86
2.22
2.97
Hex Coupling Nuts

 

Hex Castle Nuts Hex Castle Nuts
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Nominal Size
or
Basic Major Dia.
of Thread
F G H T S R W Runout of
Bearing
Surface
FIR
Width Across
Flats
Width Across
Corners
Thickness Unslotted Thickness
and
Height of Flat
Width of
Slot
Radius
of
Filet
Dia of
Cylindrical
Basic Max Min Max Min Basic Max Min Nom Max Min Max Min + .010 Min Max
5/8 0.6250
3/4 0.7500
7/8 0.8750
1 1.0000
15/16
1-1/8
1-5/16
1-1/2
0.938
1.125
1.312
1.500
0.922
1.088
1.269
1.450
1.083
1.299
1.516
1.732
1.051
1.240
1.447
1.653
23/32
13/16
29/32
1
0.731
0.827
0.922
1.018
0.706
0.798
0.890
0.982
1/2
9/16
21/32
23/32
0.51
0.57
0.67
0.73
0.49
0.55
0.64
0.70
0.24
0.24
0.24
0.30
0.18
0.18
0.18
0.24
0.156
0.188
0.188
0.188
0.797
0.941
1.097
1.254
0.021
0.023
0.025
0.027

 

T-Nuts, Straight Barrel T- Nuts, Straight Barrel

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Thread Size G H F A T Drill
Size
LBS Per M Pcs.
Flange Dia. Barrel Height Barrel
Diam.
Prong Height Material Thickness
10 – 24
10 – 24
3/4
3/4
5/16
5/16
.243
.243
7/32
7/32
.040
.040
1/4
1/4
7
7
10-32
10-32
3/4
3/4
5/16
5/16
.243
.243
7/32
7/32
.040
.040
1/4
1/4
7
7
1/4 – 20
1/4 – 20
3/4
3/4
5/16
5/16
.305
.305
7/32
7/32
.047
.047
5/16
5/16
9
9
1/4 – 20
1/4 – 20
3/4
3/4
7/16
7/16
.305
.305
5/16
1/4
.047
.047
5/16
5/16
9
9
5/16 – 18
5/16 – 18
5/16 – 18
7/8
7/8
7/8
3/8
3/8
5/8
.390
.390
.390
1/4
1/4
5/16
.063
.063
.063
25/64
25/64
25/64
14
14
18
3/8 – 16 1 7/16 .440 11/32 .063 29/64 19

 

Wing Nuts
Cold Forged
Cold Forged Wing Nuts

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Nominal
Size or Basic
Major Diameter
0f Thread
Threads
per Inch
A B C D E F
Wing
Spread
Wing
Height
Wing
Thickness
Between
Wings
Boss
Diameter
Boss
Height
Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min.
6 0.1380
8 0.1640
10 0.1900
1/4 0.2500
5/16 0.3125
3/8 0.3750
1/2 0.5000
5/8 0.6250
3/4 0.7500
32
32
24 & 32
20
18
16
13
11
10
0.72
0.91
0.91
1.10
1.25
1.44
1.94
2.76
2.76
0.59
0.78
0.78
0.97
1.12
1.31
1.81
2.62
2.62
0.41
0.47
0.47
0.57
0.66
0.79
1.00
1.44
1.44
0.28
0.34
0.34
0.43
0.53
0.65
0.87
1.31
1.31
0.11
0.14
0.14
0.18
0.21
0.24
0.33
0.40
0.40
0.07
0.10
0.10
0.14
0.17
0.20
0.26
0.34
0.34
0.21
0.27
0.27
0.39
0.39
0.48
0.65
0.90
0.90
0.17
0.22
0.22
0.26
0.32
0.42
0.54
0.80
0.80
0.33
0.43
0.45
0.50
0.58
0.70
0.93
1.19
1.19
0.29
0.39
0.39
0.45
0.51
0.64
0.86
1.13
1.13
0.14
0.18
0.18
0.22
0.25
0.30
0.39
0.55
0.55
0.10
0.14
0.14
0.17
0.20
0.26
0.35
0.51
0.51

 

Finished Hex Nuts, Hex Jam and Two
Way Reversible Lock Nuts

Nominal
Or
Basic Major Dia of Thread
F G H H1
Width Across Flats Width Across Comers Thickness Hex Nuts & Reversible Lock Nuts Thickness Hex Jam Nuts
Basic Max Min Max Min Basic Max Mmin Basic Max Min
8 0.1640
10 0.1900
1/4 0.2500
5/16 0.3125
11/32
3/8
7/16
1/2
0.344
0.375
0.438
0.500
0.332
0.362
0.428
0.489
0.397
0.433
0.505
0.577
0.378
0.413
0.488
0.557


7/32
17/64
0.203
0.203
0.226
0.273
0.187
0.187
0.212
0.258


5/32
3/16


0.164
0.195


0.150
0.180
3/8 0.3750
7/16 0.4375
1/2 0.5000
9/16 0.5625
9/16
11/16
3/4
7/8
0.562
0.688
0.750
0.875
0.551
0.675
0.736
0.861
0.650
0.794
0.866
1.010
0.628
0.768
0.840
0.982
21/64
3/8
7/16
31/64
0.337
0.385
0.448
0.496
0.320
0.365
0.427
0.473
7/32
1/4
5/16
5/16
0.227
0.260
0.323
0.324
0.210
0.240
0.302
0.301
5/8 0.6250
3/4 0.7500
7/8 0.8750
1 1.0000
15/16
1-1/8
1-5/16
1-1/2
0.938
1.125
1.312
1.500
0.922
1.088
1.269
1.450
1.083
1.299
1.516
1.732
1.051
1.240
1.447
1.653
35/64
41/64
3/4
55/64
0.559
0.665
0.776
0.887
0.535
0.617
0.724
0.831
3/8
27/64
31/64
35/64
0.387
0.446
0.510
0.575
0.363
0.398
0.458
0.519
1-1/8 1.1250
1-1/4 1.2500
1-3/8 1.3750
1-1/2 1.5000
1-11/16
1-7/8
2-1/16
2-1/4
1.688
1.875
2.062
2.250
1.631
1.812
1.994
2.175
1.949
2.165
2.382
2.598
1.859
2.066
2.273
2.480
31/32
1-1/6
1-11/64
1-9/32
0.999
1.094
1.206
1.317
0.939
1.030
1.138
1.245
39/64
23/32
25/32
27/32
0.639
0.751
0.815
0.880
0.579
0.687
0.747
0.808
1-5/8 1.6250
1-3/4 1.7500
2 2.00000
2-1/4 2.2500
2-7/16
2-5/8
3
3-3/8
2.438
2.625
3.000
3.375
2.356
2.538
2.900
3.263
2.815
3.031
3.464
3.897
2.686
2.893
3.306
3.719
1-25/64
1-1/2
1-23/32
1-15/16
1.429
1.540
1.763
1.986
1.353
1.460
1.675
1.890
29/32
31/32
1-3/32
1-7/32
0.945
1.009
1.138
1.267
0.869
0.929
1.050
1.171
2-1/2 2.5000
2-3/4 2.7500
3 3.0000
3-3/4
4-1/8
4-1/2
3.750
4.125
4.500
3.625
3.988
4.350
4.330
4.763
5.196
4.133
4.546
4.959
2-5/32
2-3/8
2-19/32
2.209
2.431
2.654
2.105
2.319
2.534
1-11/32
1-15/32
1-19/32
1.396
1.525
1.654
1.292
1.413
1.534

 

Heavy Hex Nuts Heavy Hex Nuts

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Nominal Size or
Basic Major Dia. of Thread
F G H
Width Across
Flats
Width Across
Corners
Thickness
Heavy Hex Nuts
Basic Max. Min. Max. Min. Basic Max. Min.
1/4 0.2500
5/16 0.3125
3/8 0.3750
7/16 0.4375
1/2
9/16
11/16
3/4
0.500
0.562
0.688
0.750
0.488
0.546
0.669
0.728
0.577
0.650
0.794
0.866
0.556
0.622
0.763
0.830
15/64
19/64
23/64
27/64
0.250
0.314
0.377
0.441
0.218
0.280
0.341
0.403
1/2 0.5000
9/16 0.5625
5/8 0.6250
3/4 0.7500
7/8
15/16
1-1/16
1-1/4
0.875
0.938
1.062
1.250
0.850
0.909
1.031
1.212
1.010
1.083
1.227
1.443
0.969
1.037
1.175
1.382
31/64
35/64
39/64
47/64
0.504
0.568
0.631
0.758
0.464
0.526
0.587
0.710
7/8 0.8750
1 1.0000
1-1/8 1.1250
1-1/4 1.2500
1-7/16
1-5/8
1-13/16
2
1.438
1.625
1.812
2.000
1.394
1.575
1.756
1.938
1.660
1.876
2.093
2.309
1.589
1.796
2.002
2.209
55/64
63/64
1-7/64
1-7/32
0.885
1.012
1.139
1.251
0.833
0.956
1.079
1.187
1-3/8 1.3750
1-1/2 1.5000
1-5/8 1.6250
1-3/4 1.7500
2-3/16
2-3/8
2-9/16
2-3/4
2.188
2.375
2.562
2.750
2.119
2.300
2.481
2.662
2.526
2.742
2.959
3.175
2.416
2.622
2.828
3.035
1-11/32
1-15/32
1-19/32
1-23/32
1.378
1.505
1.632
1.759
1.310
1.433
1.556
1.679
1-7/8 1.8750
2 2.0000
2-1/4 2.2500
2-1/2 2.5000
2-15/16
3-1/8
3-1/2
3-7/8
2.938
3.125
3.500
3.875
2.844
3.025
3.388
3.750
3.392
3.608
4.041
4.474
3.242
3.449
3.862
4.275
1-27/32
1-31/32
2-13/64
2-29/64
1.886
2.013
2.251
2.505
1.802
1.925
2.155
2.401
2-3/4 2.7500
3 3.0000
3-1/4 3.2500
3-1/2 3.5000
4-1/4
4-5/8
5
5-3/8
4.250
4.625
5.000
5.375
4.112
4.475
4.838
5.200
4.907
5.340
5.774
6.207
4.688
5.102
5.515
5.928
2-45/64
2-61/64
3-3/16
3-7/16
2.759
3.013
3.252
3.506
2.647
2.893
3.124
3.370
3-3/4 3.7500
4 4.000
5-3/4
6-1/8
5.750
6.125
5.562
5.925
6.640
7.073
6.341
6.755
3-11/16
3-15/16
3.760
4.014
3.616
3.862
Normal Size or
Basic Major Dia of Thread
F G H T S Runout Of
Bearing
Surface
FIM
Width Across Flats Width Across Corners Thickness Unslotted
Thickness
Width of Slot
Basic Max Min Max Min Basic Max Min Max Mmin Max Min Max
3/8 0.3750
7/16 0.4375
1/2 0.5000
9/16
11/16
3/4
0.562
0.688
0.750
0.551
0.675
0.736
0.650
0.794
0.866
0.628
0.768
0.840
21/64
3/8
7/16
0.337
0.385
0.448
0.320
0.365
0.427
0.21
0.23
0.29
0.19
0.21
0.27
0.15
0.15
0.18
0.12
0.12
0.15
0.018
0.018
0.019
5/8 0.6250
3/4 0.7500
7/8 0.8750
15/16
1-1/8
1-5/16
0.938
1.125
1.312
0.922
1.088
1.269
1.083
1.299
1.516
1.051
1.240
1.447
35/64
41/64
3/4
0.559
0.665
0.776
0.535
0.617
0.724
0.34
0.40
0.52
0.32
0.38
0.49
0.24
0.24
0.24
0.18
0.18
0.18
0.021
0.023
0.025
1 1.0000
1-1/8 1.1250
1-1/4 1.2500
1-1/2 1.5000
1-1/2
1-11/16
1-7/8
2-1/4
1.500
1.688
1.875
2.250
1.450
1.631
1.812
2.175
1.732
1.949
2.165
2.598
1.653
1.859
2.066
2.480
55/64
31/32
1-1/16
1-9/32
0.887
0.999
1.094
1.317
0.831
0.939
1.030
1.245
0.59
0.64
0.70
0.86
0.56
0.61
0.67
0.82
0.30
0.33
0.40
0.46
0.24
0.24
0.31
0.37
0.027
0.030
0.033
0.039

 

 

Serrated Flange Lock Nuts Serrated Flange Lock Nuts

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Nominal Size or
Basic Major Diameter of Thread
F G B H K J
Width
Across Flats
Width
Across
Corners
Flange
Diameter
Nut
Thickness
Wrenching
Length
Flange
Thickness
Max. Min. Max. Min. Max. Min. Max. Min. Min. Max.
6 0.1380
8 0.1640
10 0.1900
0.312
0.344
0.375
0.302
0.334
0.365
0.361
0.397
0.433
0.342
0.381
0.416
0.422
0.469
0.500
0.406
0.452
0.480
0.171
0.203
0.219
0.156
0.187
0.203
0.10
0.13
0.13
0.02
0.02
0.03
12 0.216
1/4 0.2500
5/16 0.3125
0.438
0.438
0.500
0.428
0.428
0.489
0.505
0.505
0.577
0.488
0.488
0.557
0.594
0.594
0.680
0.574
0.574
0.660
0.236
0.236
0.283
0.222
0.222
0.268
0.14
0.14
0.17
0.04
0.04
0.04
3/8 0.3750
7/16 0.4375
1/2 0.5000
0.562
0.688
0.750
0.551
0.675
0.736
0.650
0.794
0.866
0.628
0.768
0.840
0.750
0.937
1.031
0.728
0.910
1.000
0.347
0.395
0.458
0.330
0.375
0.437
0.23
0.26
0.31
0.04
0.04
0.05
5/8 0.6250
3/4 0.7500
0.938
1.125
0.922
1.088
1.083
1.299
1.051
1.240
1.281
1.500
1.248
1.460
0.569
0.675
0.545
0.627
0.40
0.46
0.05
0.06

 

“K” Lock Nuts

Nominal
Size or Basic Thread Diameter
F G H I
Width Across Flats Width Across
Corners
Thickness Washer
Diameter
Hex
Basic Max. Min. Max. Min. Max. Min. Ref.
4 0.1120
6 0.1380
8 0.1640
10 0.1900
1/4 0.2500
5/16 0.3125
3/8 0.3750
1/4
5/16
11/32
3/8
7/16
1/2
9/16
0.250
0.312
0.344
0.375
0.438
0.500
0.562
0.241
0.302
0.332
0.362
0.423
0.489
0.551
0.289
0.361
0.397
0.433
0.505
0.577
0.650
0.275
0.344
0.378
0.413
0.482
0.557
0.628
0.098
0.114
0.130
0.130
0.193
0.273
0.385
0.087
0.102
0.117
0.117
0.178
0.258
0.365
0.281
0.344
0.375
0.406
0.500
0.578
0.656

 

 

Square and Hex Machine Screw Nuts

Nominal Size
or
Basic
Thread
Diameter
F G G1 H
Width Across Flats Width Across Corners Thickness
Square Hex
Basic Max. Min. Max. Min. Max. Min. Max. Min.
2 0.0860
3 0.0990
3/16
3/16
0.188
0.188
0.180
0.180
0.265
0.265
0.247
0.247
0.217
0.217
0.205
0.205
0.066
0.066
0.057
0.057
4 0.1120
5 0.1250
6 0.1380
1/4
5/16
5/16
0.250
0.312
0.312
0.241
0.302
0.302
0.354
0.442
0.442
0.331
0.415
0.415
0.289
0.361
0.361
0.275
0.344
0.344
0.098
0.114
0.114
0.087
0.102
0.102
8 0.1640
10 0.1900
12 0.2160
11/32
3/8
7/16
0.344
0.375
0.438
0.332
0.362
0.423
0.486
0.530
0.619
0.456
0.497
0.581
0.397
0.433
0.505
0.378
0.413
0.482
0.130
0.130
0.161
0.117
0.117
0.148
1/4 0.2500
5/16 0.3125
3/8 0.3750
7/16
9/16
5/8
0.438
0.562
0.625
0.423
0.545
0.607
0.619
0.795
0.884
0.581
0.748
0.833
0.505
0.650
0.722
0.482
0.621
0.692
0.193
0.225
0.257
0.178
0.208
0.239

 

 

Hex Panel Nuts Hex Panel Nuts

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Size Across the Flats Thickness
1/8-27
1/8-27
3/8-32
3/8-32
15/32-32
9/16
9/16
1/2
9/16
9/16
1/8
3/16
3/32
3/32
3/32

 

 

Regular Square Nuts Regular Square Nuts

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Nominal or Basic Major Dia. of Thread F G H
Width Across Flats Width Across Corners Across Corners Thickness
Basic Max. Mm. Max. Mm. Basic Max. Mm.
1/4 0.2500
5/16 0.3125
3/8 0.3750
7/16 0.4375
7/16
9/16
5/8
3/4
0.438
0.562
0.625
0.750
0.425
0.547
0.606
0.728
0.619
0.795
0.884
1.061
0.584
0.751
0.832
1.000
7/32
17/64
21/64
3/8
0.235
0.283
0.346
0.394
0.203
0.249
0.310
0.356
1/2 0.5000
5/8 0.6250
3/4 0.7500
7/8 0.8750
13/16
1
1-1/8
1-5/16
0.812
1.000
1.125
1.312
0.788
0.969
1.088
1.269
1.149
1.414
1.591
1.856
1.082
1.330
1.494
1.742
7/16
35/64
21/32
49/64
0.458
0.569
0.680
0.792
0.418
0.525
0.632
0.740
1 1.0000
1-1/4 1.2500
1-1/2 1.5000
1-1/2
1-7/8
2-1/4
1.500
1.875
2.250
1.450
1.812
2.175
2.121
2.652
3.182
1.991
2.458
2.956
7/8
1-3/32
1-5/16
0.903
1.126
1.348
0.847
1.062
1.276

 

 

 

Nylon Insert
Stop Nuts
Nylon Insert Stop Nuts

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Nominal Size or Basic Thread Diameter F H I G
Width Across Flats Thickness Side
Height
Width
Across
Comers
Basic Max. Min. Max. Min. Ref. Ref.
4 0.1120
6 0.1380
8 0.1640
10 0.1900
1/4 0.2500
5/16 0.3125
3/8 0.3750
7/16 0.4375
1/2 0.5000
9/16 0.5625
5/8 0.6250
3/4 0.7500
7/8 0.8750
1 1.0000
1-1/8 1.1250
1-1/4 1.2500
1-1/2 1.5000
1/4
5/16
11/32
3/8
7/16
1/2
9/16
11/16
3/4
7/8
15/16
1-1/8
1-5/16
1-1/2
1-11/16
1-7/8
2-1/4
0.251
0.313
0.345
0.376
0.439
0.502
0.565
0.690
0.752
0.877
0.940
1.127
1.315
1.502
1.690
1.877
2.252
0.241
0.302
0.332
0.362
0.428
0.489
0.551
0.675
0.736
0.861
0.922
1.088
1.269
1.450
1.631
1.812
2.175
0.153
0.188
0.239
0.249
0.328
0.359
0.468
0.468
0.609
0.656
0.765
0.890
0.999
1.078
1.203
1.422
1.640
0.133
0.168
0.219
0.229
0.298
0.329
0.438
0.438
0.579
0.626
0.735
0.860
0.969
1.061
1.141
1.360
1.578
0.081
0.103
0.140
0.140
0.225
0.250
0.335
0.324
0.464
0.469
0.593
0.742
0.790
0.825
0.930
1.125
1.313
0.268
0.399
0.374
0.410
0.482
0.552
0.622
0.698
0.837
0.978
1.051
1.191
1.430
1.615
1.826
2.038
2.444

 

Nylon Insert
Stop Nuts
Thin Pattern

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Nominal Size or Basic Thread
Diameter
F H I G
Width Across Flats Thickness Side
Height
Width
Across
Corners
Basic Max. Min. Max. Min. Ref. Ref.
4 .1120
6 .1380
8 .1640
10 .1900
1/4 .2500
5/16 .3125
3/8 .3750
7/16 .4375
1/2 .5000
5/8 .6250
3/4 .7500
1/4
5/16
11/32
3/8
7/16
1/2
9/16
11/16
3/4
15/16
1-1/8
.251
.313
.345
.376
.439
.502
.565
.690
.752
.940
1.127
.241
.302
.332
.362
.428
.489
.551
.675
.736
.922
1.088
.124
.140
.187
.187
.218
.265
.281
.328
.328
.406
.421
.094
110
.157
.157
.188
.235
.251
.298
.298
.376
.391
.075
.090
.110
.110
125
.158
.150
.190
.225
.264
.288
.268
.399
.374
.410
.482
.552
.622
.694
.837
1.051
1.191

 

 

 

 

Wing NutsStamped Stamped Wing Nuts

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Nominal
Size or Basic Major Diameter of Thread
Threads per Inch A B C D E G H T
Wing Spread Wing Height Wing Thickness Between Wings Boss Diameter Boss Height Wall Height Stock Thickness
Max. Min. Max. Min. Max. Min. Min. Max. Min. Min. Min. Max. Min.
6 0.1380
8 0.1640
10 0.1900
1/4 0.2500
5/16 0.3125
3/8 0.3750
32
32
24 & 32
20
18 & 24
16 & 24
0.78
0.78
0.91
1.11
1.30
1.41
0.72
0.72
0.85
1.05
1.24
1.34
0.40
0.40
0.47
0.50
0.59
0.67
0.34
0.34
0.41
0.44
0.53
0.61
0.18
0.18
0.21
0.25
0.30
0.34
0.14
0.14
0.17
0.21
0.26
0.30
0.25
0.25
0.34
0.34
0.46
0.69
0.41
0.41
0.53
0.62
0.73
0.83
0.35
0.35
0.47
0.56
0.67
0.77
0.08
0.08
0.10
0.11
0.14
0.16
0.12
0.12
0.12
0.12
0.18
0.18
0.04
0.04
0.04
0.05
0.06
0.06
0.03
0.03
0.03
0.04
0.05
0.05

 

Stover® Locknuts
Grade C
Automation Style
Stover(r) Locknuts

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Nom.
Size
In
Inches
T W B
Width Across Flats Overall
Thickness
Hex
Height
Nom. Max. Min. Max. Min. (Min.)
1/4
5/16
3/8
7/16
1/2
9/16
0.4385
0.5020
0.5645
0.428
0.489
0.551
0.226
0.273
0.337
0.212
0.258
0.320
0.145
0.166
0.198
7/16
1/2
9/16
11/16
3/4
7/8
0.6895
0.7520
0.8770
0.675
0.736
0.861
0.385
0.448
0.496
0.365
0.427
0.473
0.223
0.262
0.286
5/8
3/4
15/16
1-1/8
0.9395
1.1270
0.922
1.088
0.559
0.665
0.535
0.617
0.329
0.382
7/8
1
1-5/16
1-1/2
1.3145
1.5020
1.2690
1.4500
0.776
0.887
0.724
0.831
0.450
0.513

 

Grade GT
Flange Style
Grade GT Flange Style

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Nom.
Size
In
Inches
F B H A K
Width Across Flats Flange
Diam.
Overall
Thickness
Hex
Height
Flange
Thick.
Nom. Max. Min. (Max.) Max. Min. (Min.) (Min.)
3/8
1/2
5/8
3/4
9/16
3/4
15/16
1-1/8
0.5645
0.7520
0.9395
1.1270
0.551
0.736
0.922
1.088
0.810
1.070
1.330
1.585
0.425
0.555
0.690
0.825
0.404
0.528
0.646
0.742
0.200
0.260
0.320
0.380
0.060
0.080
0.100
0.110

® Stover is a registered trademark of RB&W Corporation.

 

Stover® Locknuts
Grade C Hex Collar
Stover(r) Locknuts

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Nom.
Size In
Inches
T W H
Width Across Flats Overall
Thickness
Hex
Height
Max. Min. Max. Min. Max. Min.
1-1/8
1-1/4
1-3/8
1-1/2
1-3/4
2
1.688
1.875
2.062
2.250
2.625
3.000
1.631
1.812
1.994
2.175
2.538
2.900
0.999
1.094
1.206
1.317
1.540
1.763
0.939
1.030
1.138
1.245
1.460
1.675
0.657
0.719
0.793
0.865
1.012
1.158
0.636
0.698
0.771
0.843
0.989
1.134

®Stover is a registered trademark of RB&W Corporation.