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US Machine Screws - Dimensions

Machine screw diameters.

US machine screws

US Machine Screws - Dimensions
Size no.Thread DiameterTPI
Decimal
(in)
Nearest Fractional
(in)
FineCoarse
0 0.0600 1/16 80
1 0.0730 5/64 72 64
2 0.0860 3/32 64 56
3 0.0990 7/64 56 48
4 0.1120 7/64 48 40
5 0.1250 1/8 44 40
6 0.1380 9/64 40 32
8 0.1640 5/32 36 32
10 0.1900 3/16 32 24
12 0.2160 7/32 28 24
1/4 0.2500 1/4 28 20
5/16 0.3125 5/16 24 18
3/8 0.3750 3/8 24 16

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