BS 916 - 1953 Square Nuts with B.S.Threads - Black [Table 3]


Unit: inch
Thread Size
d
1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4 7/8 1 1-1/8 1-1/4 (1-3/8) 1-1/2 (1-5/8)
PP No. of Threads/Inch BSW
BSF
s max
min
e max
k max
min
20 18 16 14 12 12 11 10 9 8 7 7 6 6 5
26 22 20 18 16 16 14 12 11 10 9 9 8 8 8
0.445 0.525 0.6 0.71 0.82 0.92 1.01 1.2 1.3 1.48 1.67 1.86 2.05 2.22 2.41
0.435 0.515 0.585 0.695 0.8 0.9 0.985 1.175 1.27 1.45 1.64 1.815 2.005 2.175 2.365
0.63 0.74 0.85 1.00 1.16 1.30 1.43 1.70 1.84 2.09 2.36 2.63 2.90 3.14 3.41
0.220 0.270 0.332 0.395 0.467 0.530 0.602 0.728 0.810 0.935 1.060 1.205 1.330 1.455 1.580
0.200 0.250 0.312 0.375 0.437 0.500 0.562 0.687 0.750 0.875 1.000 1.125 1.250 1.375 1.500
Thread Size
d
1-3/4 2 2-1/4 2-1/2 2-3/4 3 (3-1/4) 3-1/2 (3-3/4) 4 4-1/2 5 5-1/2 6
PP No. of Threads/Inch BSW
BSF
s max
min
e max
k max
min
5 4.5 4 4 3.5 3.5 3.25 3.25 3 3 2.875 2.75 2.625 2.5
7 7 6 6 6 5 5 4.5 4.5 4.5 4 4 4 4
2.58 2.76 3.15 3.55 3.89 4.18 4.53 4.85 5.18 5.55 6.38 7.3 8.35 9.45
2.52 2.7 3.09 3.49 3.83 4.08 4.43 4.75 5.08 5.45 6.255 7.175 8.225 9.325
3.65 3.90 4.45 5.02 5.50 5.91 6.41 6.86 7.33 7.85 9.02 10.32 11.81 13.36
1.725 1.850 1.975 2.225 2.475 2.775 3.025 3.275 3.525 3.775 4.200 4.700 5.200 5.700
1.625 1.750 1.875 2.125 2.375 2.625 2.875 3.125 3.375 3.625 4.000 4.500 5.000 5.500
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