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Grooved Pins > Specifications > Standard Dimensions
Standard Pin Dimensions
Nominal Size or Basic Pin Diameter
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Recommended Hole Size (Unplated Pin)
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Max
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Min
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Ref
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Min
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Ref
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Max
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Min
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Max
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Min
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Max
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Min
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Ref
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Max
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Min
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Max
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Min
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1/32
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0.0312
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0.0312
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0.0297
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0.015
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0.0324
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0.0312
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3/64
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0.0469
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0.0469
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0.0454
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0.031
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0.0482
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0.0469
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1/16
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0.0625
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0.0625
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0.0610
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0.031
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0.005
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0.0065
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0.088
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0.068
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0.0640
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0.0625
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5/64
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0.0781
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0.0781
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0.0766
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0.031
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0.005
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0.0087
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0.104
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0.084
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0.0798
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0.0781
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3/32
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0.0938
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0.0938
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0.0923
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0.031
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0.005
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0.0091
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0.135
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0.115
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0.038
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0.028
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0.041
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0.031
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0.016
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0.067
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0.057
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0.0956
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0.0938
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7/64
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0.1094
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0.1094
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0.1074
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0.031
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0.005
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0.0110
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0.150
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0.130
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0.038
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0.028
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0.041
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0.031
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0.016
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0.082
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0.072
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0.1113
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0.1094
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1/8
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0.1250
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0.1250
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0.1230
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0.031
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0.005
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0.0130
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0.166
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0.146
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0.069
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0.059
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0.041
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0.031
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0.031
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0.088
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0.078
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0.1271
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0.1250
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5/32
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0.1563
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0.1563
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0.1543
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0.062
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0.005
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0.0170
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0.198
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0.178
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0.069
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0.059
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0.057
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0.047
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0.031
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0.109
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0.099
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0.1587
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0.1563
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3/16
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0.1875
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0.1875
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0.1855
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0.062
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0.016
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0.0190
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0.260
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0.240
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0.069
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0.059
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0.057
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0.047
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0.031
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0.130
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0.120
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0.1903
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0.1875
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7/32
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0.2188
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0.2188
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0.2168
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0.062
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0.016
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0.0220
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0.291
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0.271
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0.101
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0.091
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0.072
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0.062
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0.047
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0.151
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0.141
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0.2219
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0.2188
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1/4
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0.2500
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0.2500
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0.2480
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0.062
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0.016
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0.0260
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0.322
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0.302
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0.101
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0.091
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0.072
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0.062
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0.047
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0.172
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0.162
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0.2534
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0.2500
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5/16
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0.3125
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0.3125
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0.3105
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0.094
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0.031
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0.0340
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0.385
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0.365
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0.132
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0.122
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0.104
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0.094
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0.062
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0.214
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0.204
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0.3166
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0.3125
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3/8
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0.3750
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0.3750
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0.3730
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0.094
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0.031
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0.0390
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0.479
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0.459
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0.132
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0.122
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0.135
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0.125
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0.062
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0.255
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0.245
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0.3797
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0.3750
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7/16
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0.4375
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0.4375
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0.4355
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0.094
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0.031
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0.0470
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0.541
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0.521
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0.195
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0.185
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0.135
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0.125
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0.094
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0.298
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0.288
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0.4428
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0.4375
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1/2
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0.5000
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0.5000
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0.4980
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0.094
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0.031
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0.0520
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0.635
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0.615
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0.195
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0.185
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0.135
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0.125
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0.094
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0.317
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0.307
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0.5060
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0.5000
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* Pins in 1/32" and 3/64" diameter of any length and all sizes 1/4" nominal length or shorter are not crowned or chamfered.
Alloy steel pins of all types have chamfered ends.
Tabulated dimensions and tolerances apply to the pins prior to applications of plating or other coating.
Return to Grooved Pins Specifications main page
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