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Click Specification

Unit:inch

Slotted Pan Head Screws with B.S.W. & B.S.F. Threads [Table 5]

BS 450 - 1958

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英标BS 450 - 1958 BS450 450BS Slotted Pan Head Screws with B.S.W. & B.S.F. Threads [Table 5]
Thread Size
d
1/8 3/16 7/32 1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4
d
PP No. of Threads/Inch B.S.W.
B.S.F.
dk max
min
k max
min
n max
min
t Nominal Size
r Full shank max
R Reduced shank max
0.1250 0.1875 0.2188 0.2500 0.3125 0.3750 0.4375 0.5000 0.5625 0.6250 0.7500
40 24 / 20 18 16 14 12 (12) 11 10
/ (32) (28) 26 22 20 18 16 (16) 14 12
0.245 0.373 0.425 0.492 0.615 0.740 0.863 0.987 1.031 1.125 1.250
0.231 0.357 0.407 0.473 0.594 0.716 0.838 0.958 0.999 1.090 1.209
0.075 0.110 0.125 0.144 0.178 0.212 0.247 0.281 0.315 0.350 0.419
0.065 0.099 0.112 0.130 0.162 0.195 0.227 0.260 0.293 0.325 0.390
0.039 0.050 0.055 0.061 0.071 0.082 0.093 0.104 0.115 0.126 0.148
0.032 0.042 0.046 0.051 0.061 0.072 0.082 0.092 0.103 0.113 0.134
0.040 0.061 0.069 0.078 0.095 0.112 0.129 0.145 0.162 0.179 0.213
0.010 0.015 0.015 0.031 0.031 0.031 0.031 0.031 0.031 0.031 0.031
0.020 0.025 0.025 0.040 0.045 0.045 0.050 0.050 0.050 0.055 0.060
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