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T-bolts

ASME/ANSI B 5.1M (B5JM) - 1985 (R2014)

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美标ASME/ANSI B5.1M (B5JM) - 1985 (R2014)  T-bolts
Serial Number
1 2 3 4 5 6 7 8 9 10 11 12 13
A inch UNC-2A
Metric ISO ②
B inch max
min
mm max
min
Width Across Corners, inch, max
Width Across Corners, mm, max
C inch max
min
mm max
min
R inch max
mm max
W inch max
mm max
/ / 0.250-20 0.312-18 0.375-16 0.500-13 0.625-11 0.750-10 1.000-8 1.250-7 1.500-6 / /
M4 M5 M6 M8 M10 M12 M16 M20 M24 M30 M36 M42 M48
/ / 0.469 0.562 0.688 0.875 1.125 1.312 1.688 2.062 2.500 / /
/ / 0.438 0.531 0.656 0.844 1.094 1.281 1.656 2.031 2.469 / /
9 10 13 15 18 22 28 34 43 53 64 75 85
8.5 9.5 12 14 17 21 27 33 42 52 63 74 84
/ / 0.663 0.796 0.972 1.238 1.591 1.856 2.387 2.917 3.536 / /
12.7 14.1 18.4 21.2 25.5 31.1 39.6 48.1 60.8 75 90.5 106.1 120.2
/ / 0.156 0.188 0.250 0.312 0.406 0.531 0.688 0.938 1.188 / /
/ / 0.141 0.172 0.234 0.297 0.391 0.500 0.656 0.906 1.156 / /
2.5 4 6 6 7 8 10 14 18 23 28 32 36
2.1 3.6 5.6 5.6 6.6 7.6 9.6 13.2 17.2 22.2 27.2 30.5 34.5
/ / 0.02 0.02 0.02 0.02 0.03 0.03 0.03 0.03 0.03 / /
0.3 0.3 0.5 0.5 0.5 0.5 0.8 0.8 0.8 0.8 0.8 1 1
/ / 0.03 0.03 0.03 0.06 0.06 0.06 0.06 0.06 0.06 / /
0.5 0.5 0.8 0.8 0.8 1.5 1.5 1.5 1.5 1.5 1.5 2 2
①,Tolerances for diameters of bolts or studs and for threads are in accordance with ANSI/ASME B1.1 and ISO 263-1973 for inch threads, and with ANSI/ASME B1.16M and ISO 965-1973 for, metric threads. 
②,Metric thread grade and tolerance position is 5g 6g.
③,Corners of T-bolts may be square,or may be rounded or broken to the lndiceted maximum dimensions at the manufacturers option. 

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