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Type I Cross Recessed Flat Countersunk Trim Head Tapping Screws - Type C Thread Forming [Table 17]

ASME B 18.6.4 - 1998

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美标ASME B18.6.4 - 1998 ASME18.6.4 18.6.4A Type I Cross Recessed Flat Countersunk Trim Head Tapping Screws - Type C Thread Forming [Table 17]
Nominal Diameter
d
4# 5# 6# 6# 8# 8# 10# 12# 12# 1/4 1/4 5/16 5/16 3/8
d Nominal Diameter
Code Head Size
ds1 min
dk max
min
k Ref.
M Ref.
t Ref.
N Ref.
Socket No.
Penetration depth max
min
0.1120 0.1250 0.1380 0.1380 0.1640 0.1640 0.1900 0.2160 0.2160 0.2500 0.2500 0.3125 0.3125 0.3750
3 4 4 5 5 6 8 8 10 10 12 12 1/4 5/16
0.106 0.119 0.131 0.131 0.157 0.157 0.181 0.207 0.207 0.240 0.240 0.302 0.302 0.364
0.187 0.212 0.212 0.237 0.237 0.262 0.312 0.312 0.362 0.362 0.412 0.412 0.477 0.597
0.167 0.191 0.191 0.215 0.215 0.238 0.285 0.285 0.333 0.333 0.380 0.380 0.442 0.556
0.052 0.060 0.052 0.068 0.052 0.069 0.085 0.069 0.101 0.080 0.112 0.075 0.116 0.155
0.100 0.122 0.122 0.148 0.158 0.176 0.182 0.192 0.198 0.198 0.262 0.262 0.276 0.358
0.060 0.081 0.081 0.074 0.084 0.102 0.110 0.120 0.124 0.124 0.144 0.144 0.160 0.205
0.018 0.018 0.018 0.027 0.029 0.030 0.030 0.032 0.032 0.032 0.035 0.035 0.036 0.061
1 1 1 2 2 2 2 2 2 2 3 3 3 4
0.061 0.082 0.082 0.075 0.085 0.103 0.110 0.120 0.125 0.125 0.139 0.139 0.154 0.196
0.045 0.066 0.066 0.052 0.062 0.080 0.087 0.097 0.102 0.102 0.116 0.116 0.131 0.174

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