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80°Slotted Raised Countersunk Head Tapping Screws [Table 12]

BS 4174 - 1972

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英标BS 4174 - 1972 BS4174 4174BS 80°Slotted Raised Countersunk Head Tapping Screws [Table 12]
Size
2# 4# 6# 8# 10# 12# 14# 16#
dk (mm) max
min
k (mm) ref.
n (mm) max
min
t (mm) Nominal Size
f (mm) Nominal Size
dk (in.) max
min
k (in.) ref.
n (in.) max
min
t (in.) Nominal Size
f (in.) Nominal Size
4.37 5.71 7.09 8.43 9.78 11.13 12.88 16.13
3.73 4.95 6.2 7.42 8.64 9.88 11.48 14.43
1.3 1.7 2.11 2.54 2.95 3.35 3.89 4.85
0.79 0.99 1.22 1.37 1.52 1.7 1.9 2.13
0.58 0.79 0.99 1.14 1.27 1.42 1.63 1.83
1.04 1.37 1.7 2.03 2.39 2.72 3.15 3.96
0.64 0.84 1.02 1.22 1.4 1.6 1.83 2.29
0.172 0.225 0.279 0.332 0.385 0.438 0.507 0.635
0.147 0.195 0.244 0.292 0.340 0.389 0.452 0.568
0.051 0.067 0.083 0.100 0.116 0.132 0.153 0.191
0.031 0.039 0.048 0.054 0.060 0.067 0.075 0.084
0.023 0.031 0.039 0.045 0.050 0.056 0.064 0.072
0.041 0.054 0.067 0.080 0.094 0.107 0.124 0.156
0.025 0.033 0.040 0.048 0.055 0.063 0.072 0.090
①,Edge of head may be rounded or flat.

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