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ASME/ANSI B18.6.4-17-1998
Type G 80°cross recessed with type H recessed flat small countersunk trim head self tapping cutting screw-Table 17
Nom
P
dk max
dk min
k
M
t
No.
d max
d min
d1
#6
32
0.212
0.191
0.052
0.122
0.081
1
0.138
0.1312
0.107
#8
32
0.237
0.215
0.052
0.158
0.084
2
0.164
0.1571
0.132
#12
24
0.312
0.285
0.069
0.192
0.12
2
0.216
0.2078
0.174
1/4
20
0.362
0.333
0.08
0.198
0.124
2
0.25
0.2408
0.2
5/16
18
0.412
0.38
0.075
0.262
0.144
3
0.3125
0.3026
0.257
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