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Precision Hexagon Lock Nuts - B.S.W. & B.S.F. threads

BS 1083 - 1965

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英标BS 1083 - 1965 BS1083 1083BS Precision Hexagon Lock Nuts - B.S.W. & B.S.F. threads
Thread Size
d
1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4
PP BSW
BSF
s max
min
m max
min
e max
20 18 16 14 12 12 11 10
26 22 20 18 16 16 14 12
0.445 0.525 0.600 0.710 0.820 0.920 1.010 1.200
0.438 0.518 0.592 0.702 0.812 0.912 1.000 1.190
0.133(0.161) 0.166(0.192) 0.208(0.224) 0.250 0.291 0.333 0.375 0.458
0.123(0.151) 0.156(0.182) 0.198(0.214) 0.240 0.281 0.323 0.365 0.448
0.51 0.61 0.69 0.82 0.95 1.06 1.17 1.39
Thread Size
d
7/8 1 1-1/8 1-1/4 1-3/8 1-1/2 1-3/4 2
PP BSW
BSF
s max
min
m max
min
e max
9 8 7 7 - 6 5 4.5
11 10 9 9 8 8 7 7
1.300 1.480 1.670 1.860 2.050 2.220 2.580 2.760
1.288 1.468 1.640 1.815 2.005 2.175 2.520 2.700
0.500 0.583 0.666 0.750 0.833 0.916 1.083 1.166
0.490 0.573 0.656 0.730 0.813 0.896 1.063 1.146
1.50 1.71 1.93 2.15 2.37 2.56 2.98 3.19
①,Alternative thickness values have been provided, in parentheses, for sizes 1/4 in, 5/ 16 in and 3/8 in to cater for different manufacturing processes. This option shall not apply unless the purchaser in his enquiry and order specifically sta tes which of the alterna tive thickness values he requires .

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