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Unit:mm/inch

T-nuts

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

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美标ASME/ANSI B5.1M (B5JM) - 1985 (R2014) T-nuts
Size
4 5 6 8 10 12 16 20 24 30 36 42 48
Nominal Size （inch）
A mm max
min
inch max
min
E mm UNC-3B
inch ISO ①
B mm max
min
inch max
min
C mm max
min
inch max
min
k ② mm
inch
L ② mm
inch
R mm max
inch max
W mm max
inch max
/ / 0.250 0.312 0.375 0.500 0.625 0.750 1.000 1.250 1.500 / /
/ / / 8.7 11 13.5 17.25 20.5 26.5 33 39.25 46.75 52.5
/ / / 8.5 10.75 13.25 17 20.25 26 32.5 38.75 46.25 51.75
/ / / 0.330 0.418 0.543 0.668 0.783 1.033 1.273 1.523 / /
/ / / 0.320 0.408 0.533 0.658 0.773 1.018 1.258 1.508 / /
/ / / M6 M8 M10 M12 M16 M20 M24 M30 M36 M42
/ / / 0.250-20 0.312-18 0.375-16 0.500-13 0.625-11 0.750-10 1.000-8 1.250-7 / /
/ / / 15 18 22 28 34 43 53 64 75 85
/ / / 14 17 21 27 33 42 52 63 74 84
/ / / 0.562 0.688 0.875 1.125 1.312 1.688 2.062 2.500 / /
/ / / 0.531 0.656 0.844 1.094 1.281 1.656 2.031 2.469 / /
/ / / 6 7 8 10 14 18 23 28 32 36
/ / / 5.6 6.6 7.6 9.6 13.2 17.2 22.2 27.2 30.5 34.5
/ / / 0.188 0.250 0.312 0.406 0.531 0.688 0.938 1.188 / /
/ / / 0.172 0.234 0.297 0.391 0.500 0.656 0.906 1.156 / /
/ / / 9 10.5 12 15 21 27 34 42 48 54
/ / / 0.281 0.375 0.531 0.625 0.781 1.000 1.312 1.625 / /
/ / / 18 20 23 27 35 46 53 65 75 85
/ / / 0.562 0.688 0.875 1.125 1.312 1.688 2.062 2.500 / /
/ / / 0.5 0.5 0.5 0.8 0.8 0.8 0.8 0.8 1 1
/ / / 0.02 0.02 0.02 0.03 0.03 0.03 0.03 0.03 / /
/ / / 0.8 0.8 1.5 1.5 1.5 1.5 1.5 1.5 2 2
/ / / 0.03 0.03 0.06 0.06 0.06 0.06 0.06 0.06 / /
①,Tolerances for threads in accordance with ANSI/ASME B1.1 and ISO 263-1973 for inch threads, and ANSI/ASME B1.16M and ISO 965-1973 for metric threads. 
②,There are no tolerances given for "total thickness" or "nut length" as they need not be held to close limits. 
③,Metric tapped thread grade and tolerance position is 5H. 
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