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  • Applicable socket depths are specified in the dimensional tables and notes for the respective screw types.
  • Where spline sockets are chamfered, the depth of chamfer shall not exceed 10 percent of the nominal socket size for sizes up to and including 0.060 in., and 7.5 percent for larger sizes. For chamfered sockets, it is permissible for the NOT GO socket gage to enter to the depth of chamfer as specified in Appendix.
  • Where both six and four splines are available, six splines will be supplied unless four splines are ordered.
  • Broach petals at the bottom of the socket are permissible.
Spline Sockets
Unit of Measure
Items Spline Sockets
SS00275XXX
Spline Socket, 0.033" Nominal Dia.
Spline Sockets
SS00395XXX
Spline Socket, 0.048" Nominal Dia.
Spline Sockets
SS0041XXX
Spline Socket, 0.048" Nominal Dia.
Spline Sockets
SS0051XXX
Spline Socket, 0.060" Nominal Dia.
Spline Sockets
SS00545XXX
Spline Socket, 0.069" Nominal Dia.
Manufacturer N/A Industrial Fasteners Institute
Product N/A Socket Screws
Codes and Standards N/A ASME B18.3 2002
Unit of Measure N/A English
Nominal Socket and Key Size N/A 0.033 in N/A 0.048 in N/A 0.048 in N/A 0.060 in N/A 0.069 in
Number of Teeth N/A 4 N/A 4 N/A 6 N/A 6 N/A 4
Max. Socket Major Dia. (M) N/A 0.0350 in N/A 0.050 in N/A 0.050 in N/A 0.062 in N/A 0.071 in
Min. Socket Major Dia. (M) N/A 0.0340 in N/A 0.049 in N/A 0.049 in N/A 0.061 in N/A 0.070 in
Max. Socket Minor Dia. (N) N/A 0.0275 in N/A 0.0395 in N/A 0.0410 in N/A 0.051 in N/A 0.0545 in
Min. Socket Minor Dia. (N) N/A 0.0260 in N/A 0.038 in N/A 0.040 in N/A 0.050 in N/A 0.053 in
Max. Width of Tooth (P) N/A 0.0120 in N/A 0.017 in N/A 0.011 in N/A 0.014 in N/A 0.021 in
Min. Width of Tooth (P) N/A 0.0115 in N/A 0.016 in N/A 0.010 in N/A 0.013 in N/A 0.020 in