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Unit:inch

Slotted Round Head Screws with B.S.W. & B.S.F. Threads [Table 4]

BS 450 - 1958

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英标BS 450 - 1958 BS450 450BS Slotted Round Head Screws with B.S.W. & B.S.F. Threads [Table 4]
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
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
0.219 0.328 0.383 0.438 0.547 0.656 0.766 0.875 0.984 1.094 1.312
0.206 0.312 0.365 0.417 0.524 0.629 0.735 0.84 0.946 1.051 1.262
0.087 0.131 0.153 0.175 0.219 0.262 0.306 0.35 0.394 0.437 0.525
0.082 0.124 0.145 0.165 0.207 0.249 0.291 0.333 0.375 0.417 0.5
0.039 0.05 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
0.048 0.072 0.084 0.096 0.12 0.144 0.168 0.192 0.217 0.24 0.288
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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