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Click Specification

Unit:inch

Thread Rolling Screws

SAE J 81 - 1997

Display drawing:

美标SAE J81 - 1997 SAE81 81SAE Thread Rolling Screws
Thread Size
2# 3# 4# 5# 6# 8# 10# 1/4 5/16 3/8 7/16 1/2
PP Threads per inch
D Major Diameter max.
dp Point Diameter max.
d1 Dia of Circumscribing Circle max.
d2 Circumscribing Circle (Point) max.
L1 Point Length max.
min.
L Min Practical Nominal Screw 90° Heads
Csk Heads
56 48 40 40 32 32 24 20 18 16 14 13
0.086 0.099 0.112 0.125 0.138 0.164 0.190 0.250 0.313 0.375 0.438 0.500
/ / 0.086 0.099 0.106 0.132 0.147 0.198 0.255 0.310 0.361 0.416
0.088 0.101 0.115 0.128 0.141 0.167 0.194 0.255 0.318 0.281 0.445 0.508
0.070 0.081 0.090 0.103 0.111 0.137 0.153 0.206 0.264 0.320 0.375 0.433
0.062 0.073 0.088 0.088 0.109 0.109 0.146 0.175 0.194 0.219 0.250 0.269
0.036 0.042 0.050 0.050 0.062 0.062 0.083 0.100 0.111 0.125 0.143 0.154
5/32 3/16 3/16 7/32 1/4 1/4 5/16 13/32 15/32 9/16 21/32 23/32
3/16 7/32 1/4 1/4 5/16 11/32 13/32 1/2 5/8 23/32 13/16 7/9
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