Sockets

Button Head Socket Cap Screws 

Nominal Size D H X S K F L
Head
Diameter
Head
Height
Head Side
Height
Hexagon Socket Size Key
Engage
ment
Fillet Extension Max Standard Length
Max Min Max Min Ref Nom Min Max Min Nom
4
5
6
8
0.213
0.238
0.262
0.312
0.201
0.226
0.250
0.298
0.059
0.066
0.073
0.087
0.051
0.055
0.063
0.077
0.015
0.015
0.015
0.015
1/16
5/64
5/64
3/32
0.062
0.078
0.078
0.094
0.035
0.044
0.044
0.052
0.010
0.010
0.010
0.015
0.005
0.005
0.005
0.010
0.50
0.50
0.63
0.75
10
1/4
5/16
3/8
0.361
0.437
0.547
0.656
0.347
0.419
0.527
0.636
0.101
0.132
0.166
0.199
0.091
0.122
0.152
0.185
0.020
0.031
0.031
0.031
1/8
5/32
3/16
7/32
0.125
0.156
0.188
0.219
0.070
0.087
0.105
0.122
0.015
0.020
0.020
0.020
0.010
0.015
0.015
0.015
1.00
1.00
1.00
1.25
1/2
5/8
0.875
1.000
0.851
0.970
0.265
0.331
0.245
0.311
0.046
0.062
5/16
3/8
0.312
0.375
0.175
0.210
0.030
0.030
0.020
0.020
2.00
2.00

 

Flat Head Socket Cap Screws

Flat Head Socket Cap Screws

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Nominal Size B D H S K F
Body Diameter Head Diameter Head Height Hexagon Socket Size Key
Engage-
ment
Fillet Extension Above 0
Theo-
retical
Sharp
Max
Abs
Min
Refer-
ence
Flush-
ness
Toler-
ance
Max Min Nom Min Max
4
5
6
8
0.1120
0.1250
0.1380
0.1640
0.1075
0.1202
0.1329
0.1585
0.255
0.281
0.307
0.359
0.218
0.240
0.263
0.311
0.083
0.090
0.097
0.112
0.011
0.012
0.013
0.014
1/16
5/64
5/64
3/32
0.055
0.061
0.066
0.076
0.012
0.014
0.015
0.015
10
1/4
5/16
3/8
0.1900
0.2500
0.3125
0.3750
0.1840
0.2435
0.3053
0.3678
0.411
0.531
0.656
0.781
0.359
0.480
0.600
0.720
0.127
0.161
0.198
0.234
0.015
0.016
0.017
0.018
1/8
5/32
3/16
7/32
0.087
0.111
0.135
0.159
0.015
0.015
0.015
0.015
7/16
1/2
5/8
3/4
0.4375
0.5000
0.6250
0.7500
0.4294
0.4919
0.6163
0.7406
0.844
0.938
1.188
1.438
0.781
0.872
1.112
1.355
0.234
0.251
0.324
0.396
0.018
0.018
0.022
0.024
1/4
5/16
3/8
1/2
0.159
0.172
0.220
0.220
0.015
0.015
0.015
0.015

 

Socket Head Cap Screws

Nominal
Size or Basic Screw Diameter
B D H S C X K W
Body Diameter Head Diameter Head Height Head Side Height Chamfer or
Radius
Hexagon Socket Size Key Engage-
ment
Wall Thick-
ness
Max Min Max Min Max Min Min Max Nom Min Min
4 .1120
5 .1250
6 .1380
8 .1640
10 .1900
1/4 .2500
5/16 .3125
3/8 .3750
.1120
.1250
.1380
.1640
.1900
.2500
.3125
.3750
.1075
.1202
.1329
.1585
.1840
.2435
.3053
.3678
.183
.205
.226
.270
.312
.375
.469
.562
.176
.198
.218
.262
.303
.365
.457
.550
.112
.125
.138
.164
.190
.250
.312
.375
.108
.121
.134
.159
.185
.244
.306
.368
.101
.112
.124
.148
.171
.225
.281
.337
.005
.005
.005
.005
.005
.008
.008
.008
3/32
3/32
7/64
9/64
5/32
3/16
1/4
5/16
.094
.094
.109
.141
.156
.188
.250
.312
.051
.057
.064
.077
.090
.120
.151
.182
.038
.043
.047
.056
.065
.095
.119
.143

 

 

Low Head Socket Cap Screws

Nominal Size B D H S K F
Basic
Screw Diameter
Head Diameter Head Height Socket Size Engage-
ment
Fillet
Max Min Max Min Min Max Min
8
10
1/4
5/16
0.1640
0.1900
0.2500
0.3125
.270
.312
.375
.437
.265
.307
.369
.431
.082
.095
.125
.156
.079
.092
.121
.152
.0781
.0938
.1250
.1562
.060
.072
.094
.120
.012
.014
.014
.017
.007
.009
.009
.012
3/8
7/16
1/2
0.3750
0.4375
0.5000
.562
.625
.750
.556
.618
.743
.187
.218
.250
.182
.213
.244
.1875
.2188
.2500
.145
.166
.184
.020
.023
.026
.015
.018
.020

 

 

Hex Wrench Hex Wrench

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Nominal Key
Size
F C S L R K
Hexagon Width Across Flats Hexagon
Width Across Corner
Length of
Short Arm
Length of Long Arm Radius of
Bend
Chamfer
Short Series Long Series
Max Min Max Min Max Min Max Min Max Min Min Max
0.028
0.035
0.050
1/16
0.0280
0.0350
0.0500
0.0625
0.0275
0.0345
0.0490
0.0615
0.0314
0.0393
0.0560
0.0701
0.0300
0.0378
0.0540
0.0680
0.312
0.438
0.625
0.656
0.125
0.250
0.438
0.469
1.312
1.312
1.750
1.844
1.125
1.125
1..562
1.656
2.688
2.766
2.938
3.094
2.500
2.578
2.750
2.906
0.062
0.062
0.062
0.062
0.003
0.004
0.006
0.008
5/64
3/32
7/64
1/8
0.0781
0.0937
0.1094
0.1250
0.0771
0.0927
0.1079
0.1235
0.0880
0.1058
0.1238
0.1418
0.0859
0.1035
0.1210
0.1390
0.703
0.750
0.797
0.844
0.516
0.562
0.609
0.656
1.969
2.094
2.219
2.344
1.781
1.906
2.031
2.156
3.281
3.469
3.656
3.844
3.094
3.281
3.469
3.656
0.078
0.094
0.109
0.125
0.008
0.009
0.014
0.015
9/64
5/32
3/16
7/32
0.1406
0.1562
0.1875
0.2187
0.1391
0.1547
0.1860
0.2172
0.1593
0.1774
0.2135
0.2490
0.1566
0.1745
0.2105
0.2460
0.891
0.938
1.031
1.125
0.703
0.750
0.844
0.938
2.469
2.594
2.844
3.094
2.281
2.406
2.656
2.906
4.031
4.219
4.594
4.969
3.844
4.031
4.406
4.781
0.141
0.156
0.188
0.219
0.016
0.016
0.022
0.024
1/4
5/16
3/8
7/16
0.2500
0.3125
0.3750
0.4375
0.2485
0.3110
0.3735
0.4355
0.2845
0.3570
0.4285
0.5005
0.2815
0.3531
0.4238
0.4944
1.219
1.344
1.469
1.594
1.031
1.156
1.281
1.406
3.344
3.844
4.344
4.844
3.156
3.656
4.156
4.656
5.344
6.094
6.844
7.594
5.156
5.906
6.656
7.406
0.250
0.312
0.375
0.438
0.030
0.032
0.044
0.047
1/2
9/16
5/8
3/4
0.5000
0.5625
0.6250
0.7500
0.4975
0.5600
0.6225
0.7470
0.5715
0.6420
0.7146
0.8580
0.5650
0.6356
0.7080
0.8512
1.719
1.844
1.969
2.219
1.531
1.656
1.781
2.031
5.344
5.844
6.344
7.344
5.156
5.656
6.156
7.156
8.344
9.094
9.844
11.344
8.156
8.906
9.656
11.156
0.500
0.562
0.625
0.750
0.050
0.053
0.055
0.070
7/8
1
0.8750
1.0000
0.8720
0.9970
1.0020
1.1470
0.9931
1.1350
2.469
2.719
2.281
2.531
8.344
9.344
8.156
9.156
12.844
14.344
12.656
14.156
0.875
1.000
0.076
0.081

 

Socket Pipe Plug Flush Seal Socket Pipe Plug Flush Seal

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Nominal Size O Threads Per Inch S K W L Tightening
Torque (Inch-Lbs.)
Nominal
O.D.
Hex
Socket Size
Key
Engage-
ment
Wall
Thickness
Overall Length
Min Min Max Min
1/16
1/8
1/4
3/8
0.307
0.401
0.529
0.667
27
27
18
18
5/32
3/16
1/4
5/16
.140
.140
.218
.250
.052
.049
.045
.040
.250
.250
.406
.406
.235
.235
.391
.391
150
250
600
1200
1/2
3/4
1
1-1/4
0.830
1.041
1.302
1.647
14
14
11-1/2
11-1/2
3/8
9/16
5/8
3/4
.312
.312
.375
.437
.067
.054
.112
.102
.531
.531
.656
.656
.516
.516
.641
.641
1800
3000
4200
5400

 

 

Socket Pipe Plug Dry Seal Socket Pipe Plug Dry Seal

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Nominal Size O Threads Per Inch S K W L Tightening
Torque (Inch-Lbs.)
Nominal
O.D.
Hex
Socket Size
Key
Engage-
ment
Wall
Thickness
Overall Length
Min Min Max Min
1/16
1/8
1/4
3/8
1/2
0.3120
0.4050
0.5400
0.6750
0.8400
27
27
18
18
14
5/32
3/16
1/4
5/16
3/8
.1400
.1400
.2180
.2500
.3120
.0620
.0620
.0730
.0840
.0950
.3240
.3240
.4570
.5200
.5820
.3000
.3000
.4170
.4800
.5420
150
250
600
1200
1800
3/4
1
1-1/4
1-1/2
2
1.0500
1.3150
1.6600
1.9000
2.3750
14
11-1/2
11-1/2
11-1/2
11-1/2
9/16
5/8
3/4
1
1
.3120
.3750
.4370
.4370
.4370
.1250
.1250
.1560
.1560
.1560
.6450
.7700
.8320
.8430
.9060
.6050
.7300
.7920
.7800
.8440
3000
4200
5400
6900
8500

 

Socket Shoulder Screws

Nominal Size A D H Z S K E F
Shoulder
Diameter
Head Diameter Head Height Head Side Height Hexagon
Socket Size
Key
Engage-
ment
Head
Fillet Extension Above D
Head Fillet Radius
Max Min Max Min Max Min Min Nom Min Max Min
1/4
5/16
3/8
0.2480
0.3105
0.3730
0.2460
0.3085
0.3710
0.375
0.438
0.562
0.357
0.419
0.543
0.188
0.219
0.250
0.177
0.209
0.240
0.157
0.183
0.209
1/8
5/32
3/16
0.094
0.117
0.141
0.014
0.017
0.020
0.009
0.012
0.015
1/2
5/8
3/4
0.4980
0.6230
0.7480
0.4960
0.6210
0.7460
0.750
0.875
1.000
0.729
0.853
0.977
0.312
0.375
0.500
0.302
0.365
0.490
0.262
0.315
0.421
1/4
5/16
3/8
0.188
0.234
0.281
0.026
0.032
0.039
0.020
0.024
0.030

 

Nominal Size N W T L Q C B
Shoulder
Neck Diameter
Shoulder Neck Width Nominal
Thread Size
Threads Per In. Thread Neck Diameter Thread Neck Thread Neck Fillet Thread
Length
Min Max Max Min Max Max Min Basic
1/4
5/16
3/8
0.227
0.289
0.352
0.093
0.093
0.093
10
1/4
5/16
24
20
18
0.142
0.193
0.249
0.133
0.182
0.237
0.083
0.100
0.111
0.023
0.028
0.031
0.017
0.022
0.025
0.375
0.438
0.500
1/2
5/8
3/4
0.477
0.602
0.727
0.093
0.093
0.093
3/8
1/2
5/8
16
13
11
0.304
0.414
0.521
0.291
0.397
0.502
0.125
0.154
0.182
0.035
0.042
0.051
0.029
0.036
0.045
0.625
0.750
0.875

 

 

Socket Set Screws

Nominal Size S K F 0 D H A
Hexagon Socket Size Min Key Engage-
ment
Cup & Flat Point Diameter Oval
Point
Radius
Half Dog Point Shortest Length To Which K Applies Cone Pt.
Angle
90° For
These
Lengths
or Longer
Diameter Length Cup & Flat
Points
90° 
Cone & Oval Pts.
Half
Dog
Point
Nom Min Max Min Basic Max Min Max Min
4
5
6
8
0.050
1/16
1/16
5/64
0.070
0.080
0.080
0.090
0.061
0.067
0.074
0.087
0.051
0.057
0.064
0.076
0.084
0.094
0.104
0.123
0.075
0.083
0.092
0.109
0.070
0.078
0.087
0.103
0.030
0.033
0.038
0.043
0.026
0.027
0.032
0.037
0.19
0.19
0.19
0.19
0.19
0.19
0.25
0.25
0.19
0.19
0.19
0.25
0.19
0.19
0.19
0.25
10
1/4
5/16
3/8
3/32
1/8
5/32
3/16
0.100
0.125
0.156
0.188
0.102
0.132
0.172
0.212
0.088
0.118
0.156
0.194
0.142
0.188
0.234
0.281
0.127
0.156
0.203
0.250
0.120
0.149
0.195
0.241
0.049
0.067
0.082
0.099
0.041
0.059
0.074
0.089
0.19
0.25
0.31
0.38
0.25
0.31
0.44
0.44
0.25
0.31
0.38
0.44
0.25
0.31
0.38
0.44
7/16
1/2
5/8
3/4
7/32
1/4
5/16
3/8
0.219
0.250
0.312
0.375
0.252
0.291
0.371
0.450
0.232
0.270
0.347
0.425
0.328
0.375
0.469
0.562
0.297
0.344
0.469
0.562
0.287
0.334
0.456
0.549
0.114
0.130
0.164
0.196
0.104
0.120
0.148
0.180
0.44
0.50
0.63
0.75
0.63
0.63
0.88
1.00
0.50
0.63
0.88
1.00
0.50
0.57
0.75
0.88
7/8
1
1/2
9/16
0.500
0.562
0.530
0.609
0.502
0.579
0.656
0.750
0.656
0.750
0.642
0.734
0.227
0.260
0.211
0.240
0.88
1.00
1.00
1.25
1.00
1.25
1.00
1.13