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Set Screws Inch Series Size Table

ANSI Engineering Hardware
ISO Metric Engineering Hardware

Set Screws per. ANSI / ASME B18.3 with hexagon and spline socket drives.

Set Screw Type A
Set Screw Type A
Set Screw Type B
Set Screw Type B
Set Screw Type C
Set Screw Type C
Set Screw Type D
Set Screw Type D
Set Screw Type E
Set Screw Type E
Set Screw Type F
Set Screw Type F
Set Screw Type G
Set Screw Type G

All dimensions are in inches

Nominal
Size
Point
Diameter
Point
Diameter
Point
Diameter
Point
Length
Max.
Min.
Max.
Min.
Max.
Min.
Max.
Min.
C
C1
C2
S
0
0.033
0.027
0.032
0.027
0.027
0.022
0.007
0.004
1
0.040
0.033
0.038
0.033
0.035
0.030
0.008
0.005
2
0.047
0.039
0.043
0.038
0.043
0.038
0.010
0.007
3
0.054
0.045
0.050
0.045
0.051
0.046
0.011
0.007
4
0.061
0.051
0.056
0.051
0.059
0.054
0.013
0.008
5
0.067
0.057
0.062
0.056
0.068
0.063
0.014
0.009
6
0.074
0.064
0.069
0.062
0.074
0.068
0.017
0.012
8
0.087
0.076
0.082
0.074
0.090
0.084
0.021
0.016
10
0.102
0.088
0.095
0.086
0.101
0.095
0.024
0.019
1⁄4
0.132
0.118
0.125
0.114
0.156
0.150
0.027
0.022
5⁄16
0.172
0.156
0.156
0.144
0.190
0.185
0.038
0.033
3⁄8
0.212
0.194
0.187
0.174
0.241
0.236
0.041
0.036
7⁄16
0.252
0.232
0.218
0.204
0.286
0.281
0.047
0.042
1⁄2
0.291
0.270
0.250
0.235
0.333
0.328
0.054
0.049
5⁄8
0.371
0.347
0.312
0.295
0.425
0.420
0.067
0.062
3⁄4
0.450
0.425
0.375
0.357
0.523
0.518
0.081
0.076
7⁄8
0.530
0.502
0.437
0.418
1
0.609
0.579
0.500
0.480
1 - 1⁄8
0.689
0.655
0.562
0.542
1 - 1⁄4
0.767
0.733
0.625
0.605
1 - 3⁄8
0.848
0.808
0.687
0.667
1 - 1⁄2
0.926
0.886
0.750
0.730
1 - 3⁄4
1.086
1.039
0.875
0.855
2
1.244
1.193
1.000
0.980
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