BS 325 - 1947 Black Square Nuts


Unit: inch
Screw Thread
d
1/4 5/16 3/8 7/16 1/2 5/8 3/4 7/8 1
PP BSW
k max
min
s max
min
20 18 16 14 12 11 10 9 8
0.22 0.27 0.33 0.39 0.46 0.6 0.72 0.81 0.93
0.2 0.25 0.31 0.37 0.43 0.56 0.68 0.75 0.87
0.445 0.525 0.6 0.71 0.82 1.01 1.2 1.3 1.48
0.435 0.515 0.585 0.695 0.8 0.985 1.175 1.27 1.45
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