Type 23 & F Tapping Screws
For product information or to request a catalog, please call: 415.861.8300 or fax: 415.552.0796
Available Materials: Zinc plated steel only
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Nominal Size or Basic Screw Diameter Maximum Major Diameter Minimum Major Diameter Maximum Minor Diameter Minimum Minor Diameter Maximum Point Taper Length For Short Screws Minimum Point Taper Length For Short Screws Maximum Point Taper Length For Long Screws Minimum Point Taper Length For Long Screws Determinant Length For Point Taper - 90 Degree Heads Determinant Length For Point Taper - Countersunk Heads Minimum Practical Screw Lengths - 90 Degree Heads Minimum Practical Screw Lengths - Countersunk Heads
2-56     0.0860 0.0860 0.0820 0.0670 0.0610 0.0620 0.0450 0.0800 0.0620 9/64 3/16 1/8 5/32
4-40     0.1120 0.1120 0.1072 0.0860 0.0770 0.0880 0.0620 0.1120 0.0880 13/64 1/4 1/8 3/16
6-32     0.1380 0.1380 0.1326 0.1060 0.0950 0.1090 0.0780 0.1410 0.1090 1/4 5/16 3/16 1/4
8-32     0.1640 0.1640 0.1586 0.1320 0.1210 0.1090 0.0780 0.1410 0.1090 1/4 21/64 3/16 1/4
10-24    0.1900 0.1900 0.1834 0.1470 0.1330 0.1460 0.1040 0.1880 0.1460 11/32 27/64 15/64 5/16
10-32    0.1900 0.1900 0.1846 0.1580 0.1470 0.1090 0.0780 0.1410 0.1090 1/4 11/32 15/64 5/16
12-24    0.2160 0.2160 0.2094 0.1730 0.1590 0.1460 0.1040 0.1880 0.1460 11/32 7/16 17/64 3/8
1/4-20    0.2500 0.2500 0.2428 0.1980 0.1810 0.1750 0.1250 0.2250 0.1750 13/32 33/64 17/64 3/8
5/16-18   0.3125 0.3125 0.3043 0.2550 0.2360 0.1940 0.1390 0.2500 0.1940 29/64 19/32 9/32 7/16
3/8-16    0.3750 0.3750 0.3660 0.3100 0.2890 0.2190 0.1560 0.810 0.2190 1/2 47/64 9/32 7/16
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For product information or to request a catalog, please call: 415.861.8300 or fax: 415.552.0796