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SOCKET CAP,
SHOULDER, AND SET SCREWS,
HEX AND SPLINE KEYS (INCH SERIES)
ASME B18.3-2003 |
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TABLE 7 DIMENSIONS OF SPLINE SOCKETS
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Nominal
Socket and
Key Size |
Number
of Teeth |
M |
N |
P |
|
Socket Major
Diameter |
Socket Minor
Diameter |
Width of Tool |
|
Max. |
Min. |
Max. |
Min. |
Max. |
Min. |
0.033
0.048 [Note (3)]
0.048
0.060 |
4
4
6
6 |
0.035
0.050
0.050
0.062 |
0.034
0.049
0.049
0.061 |
0.0275
0.0395
0.041
0.051 |
0.0260
0.038
0.040
0.050 |
0.0120
0.017
0.011
0.014 |
0.0115
0.016
0.010
0.013 |
0.069 [Note (3)]
0.072
0.076 [Note (3)]
0.096 |
4
6
4
6 |
0.071
0.074
0.079
0.098 |
0.070
0.073
0.078
0.097 |
0.0545
0.064
0.0575
0.082 |
0.053
0.063
0.056
0.080 |
0.021
0.016
0.023
0.022 |
0.020
0.015
0.022
0.021 |
0.111
0.133
0.145
0.168 |
6
6
6
6 |
0.115
0.137
0.149
0.173 |
0.113
0.135
0.147
0.171 |
0.098
0.118
0.128
0.150 |
0.096
0.116
0.126
0.147 |
0.025
0.030
0.032
0.036 |
0.023
0.028
0.030
0.033 |
0.183
0.216
0.251
0.291 |
6
6
6
6 |
0.188
0.221
0.256
0.298 |
0.186
0.219
0.254
0.296 |
0.163
0.190
0.221
0.254 |
0.161
0.188
0.219
0.252 |
0.039
0.050
0.060
0.068 |
0.037
0.048
0.058
0.066 |
0.372
0.454
0.595
0.620 |
6
6
6
6 |
0.380
0.463
0.604
0.631 |
0.377
0.460
0.601
0.627 |
0.319
0.386
0.509
0.535 |
0.316
0.383
0.506
0.531 |
0.092
0.112
0.138
0.149 |
0.089
0.109
0.134
0.145 |
0.698
0.790 |
6
6 |
0.709
0.801 |
0.705
0.797 |
0.604
0.685 |
0.600
0.681 |
0.168
0.189 |
0.164
0.185 |
GENERAL NOTES:
(a) For additional requirements, refer to section 2, General Data, of this
Standard.
(b) Broach petals at the bottom of the socket are permissible.
NOTES:
(1) Applicable socket depths are specified in the dimensional tables and
notes for the respective screw types.
(2) Where spline sockets are chamfered, the depth of chamfer shall not
exceed 10% of the nominal socket size for sizes up to and including 0.060
in., and 7.5% for larger sizes. For chamfered sockets, it is permissible for
the NOT GO socket gage to enter to the depth of chamfered as specified in
Mandatory Appendix 1.
(3) Where both six and four splines are available, six splines will be
supplied unless four splines are ordered.
Reprinted from ASME B18.3-2003,
by permission of The American Society of Mechanical Engineers. All rights
reserved.
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