BS 1981 - 1991 Recessed Raised Countersunk Head Machine Screws: Short Length


Unit: inch
英标BS 1981 - 1991 BS1981 1981BS Recessed Raised Countersunk Head Machine Screws: Short Length
Screw Thread
d
2# (3#) 4# 5# 6# 8# 10# (12#) 1/4 5/16 3/8
dk max
min
k
Penetration depth max
min
M
Socket No.
0.172 0.199 0.225 0.252 0.279 0.332 0.385 0.438 0.507 0.635 0.762
0.147 0.171 0.195 0.22 0.244 0.292 0.34 0.389 0.452 0.568 0.685
0.036 0.042 0.047 0.053 0.059 0.07 0.081 0.092 0.107 0.134 0.161
0.053 0.067 0.082 0.073 0.092 0.107 0.124 0.133 0.152 0.205 0.231
0.043 0.057 0.072 0.055 0.074 0.089 0.106 0.115 0.134 0.187 0.213
0.095 0.109 0.123 0.15 0.169 0.183 0.2 0.261 0.28 0.373 0.398
1 1 1 2 2 2 2 3 3 4 4
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