ASME B 18.6.3~2013

2#480.0760#480.0760#480.0760#480.0760#490.0730…… 1.90MM 0.0750…3#460.0810#460.0810#460.0860#440.0890#460.0810…… 2.20MM 0.0870…4#440.0860#440.0860#410.0960#410.0980#410.0960……#400.0970…5#360.1065#360.1065#350.1100#350.1100#370.1010……#350.1100…6#320.1160#320.1160#310.12001/80.1250#310.1200……#310.1200…7#300.1285#300.1285…………………………

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8#290.1360#290.1360#270.1440#260.1470#260.1470……#260.1470…10#210.1590#210.1990#190.166011/640.1719#170.1730#160.1770#190.16600.1719123/160.18753/160.1875#110.1910#100.1935#80.1990……#110.1910…14 5.5mm 0.2165…………………………………1/4…… 5.5mm 0.21657/320.218810.228010.2280A 0.2340O 0.2190…16B 0.2380…………………………………18G 0.2610…………………………………5/16……l 0.2720l 0.2770L 0.2900L 0.2900M 0.2950

J

0.2770

…20L 0.2900…………………………………2411/320.3438…………………………………3/8……21/640.3281R 0.339011/320.3438T 0.3580T 0.3580R 0.3390…7/16……13/320.4062……………………10.0MM 0.3940…1/2

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0.4688

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Drill Size Fine Thread

Fine Thread

Coarse Thread

Hole Diam.

Hole Diam.Drill Size Drill Size Hole Diam.Drill Size Drill Size Drill Size

Hole Diam.Types AB 、B and BP

Type A

ASME B 18.6.3-2013 Table 48 Standard Test

Hole Sizes for Drive-Test Inspection Of Tapping Screws

Nominal Screw Size

Hole Slze

Type C

Type TRS

Coarse Thread

Fine Thread

Coarse Thread

Ttoes D 、F 、G and T

Hole Diam.Drill Size Hole Diam.Drill Size Hole Diam.

Fine Thread

Hole

Diam.

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0.1720

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0.4560