| American Screw Gage - Wood Screws with Lengths & Heads (Year 1860) |
| (American Screw Co., Town of Providence, Rhode Island & Providence Plantations) |
| unused ASG | = | American Screw Gages 13, 15, 17, 19, 21, & 23, not used by any screw |
| 0000 gage | (4/0) | = | 0.0210 in.dia. shank | - | - |
| 000 ga. | (3/0) | = | 0.0340 in.dia. shank | - | - |
| 00 ga. | (2/0) | = | 0.0470 in.dia. shank | - | - |
| 0 ga. | (1/0) | = | 0.0600 in.dia. shank | 1/4 in. | flat & roundhead |
| 1 ga. | = | 0.0730 in.dia. shank | 1/4 in. | flathead |
| 1 ga. | = | 0.0730 in.dia. shank | 3/8 in. | flathead |
| 2 ga. | = | 0.0860 in.dia. shank | 1/4 in. | flat & roundhead |
| 2 ga. | = | 0.0860 in.dia. shank | 3/8 in. | flat & roundhead |
| 2 ga. | = | 0.0860 in.dia. shank | 1/2 in. | flathead |
| 3 ga. | = | 0.0990 in.dia. shank | 3/8 in. | flat & roundhead |
| 3 ga. | = | 0.0990 in.dia. shank | 1/2 in. | flat & roundhead |
| 3 ga. | = | 0.0990 in.dia. shank | 5/8 in. | flathead |
| 3 ga. | = | 0.0990 in.dia. shank | 3/4 in. | flathead |
| 4 ga. | = | 0.1120 in.dia. shank | 1/4 in. | flathead |
| 4 ga. | = | 0.1120 in.dia. shank | 3/8 in. | flat, round & ovalhead |
| 4 ga. | = | 0.1120 in.dia. shank | 1/2 in. | flat, round & ovalhead |
| 4 ga. | = | 0.1120 in.dia. shank | 5/8 in. | flat, round & ovalhead |
| 4 ga. | = | 0.1120 in.dia. shank | 3/4 in. | flat, round & ovalhead |
| 4 ga. | = | 0.1120 in.dia. shank | 1 in. | flat & ovalhead |
| 4 ga. | = | 0.1120 in.dia. shank | 1 1/4 in. | flathead |
| 4 ga. | = | 0.1120 in.dia. shank | 1 1/2 in. | flathead |
| 5 ga. | = | 0.1250 in.dia. shank | 1/2 in. | flat & roundhead |
| 5 ga. | = | 0.1250 in.dia. shank | 5/8 in. | flat, round & ovalhead |
| 5 ga. | = | 0.1250 in.dia. shank | 3/4 in. | flat, round & ovalhead |
| 5 ga. | = | 0.1250 in.dia. shank | 1 in. | flat & ovalhead |
| 5 ga. | = | 0.1250 in.dia. shank | 1 1/4 in. | flathead |
| 6 ga. | = | 0.1380 in.dia. shank | 3/8 in. | flat & roundhead |
| 6 ga. | = | 0.1380 in.dia. shank | 1/2 in. | flat, round & ovalhead |
| 6 ga. | = | 0.1380 in.dia. shank | 5/8 in. | flat, round & ovalhead |
| 6 ga. | = | 0.1380 in.dia. shank | 3/4 in. | flat, round & ovalhead |
| 6 ga. | = | 0.1380 in.dia. shank | 1 in. | flat, round & ovalhead |
| 6 ga. | = | 0.1380 in.dia. shank | 1 1/4 in. | flat, round & ovalhead |
| 6 ga. | = | 0.1380 in.dia. shank | 1 1/2 in. | flat, round & ovalhead |
| 6 ga. | = | 0.1380 in.dia. shank | 1 3/4 in. | flathead |
| 6 ga. | = | 0.1380 in.dia. shank | 2 in. | flathead |
| 6 ga. | = | 0.1380 in.dia. shank | 2 1/4 in. | flathead |
| 6 ga. | = | 0.1380 in.dia. shank | 2 1/2 in. | flathead |
| 7 ga. | = | 0.1510 in.dia. shank | 1/2 in. | flathead |
| 7 ga. | = | 0.1510 in.dia. shank | 5/8 in. | flathead |
| 7 ga. | = | 0.1510 in.dia. shank | 3/4 in. | flat & roundhead |
| 7 ga. | = | 0.1510 in.dia. shank | 1 in. | flat & roundhead |
| 7 ga. | = | 0.1510 in.dia. shank | 1 1/4 in. | flat & roundhead |
| 7 ga. | = | 0.1510 in.dia. shank | 1 1/2 in. | flathead |
| 7 ga. | = | 0.1510 in.dia. shank | 1 3/4 in. | flathead |
| 7 ga. | = | 0.1510 in.dia. shank | 2 in. | flathead |
| 8 ga. | = | 0.1640 in.dia. shank | 3/8 in. | flathead |
| 8 ga. | = | 0.1640 in.dia. shank | 1/2 in. | flat & roundhead |
| 8 ga. | = | 0.1640 in.dia. shank | 5/8 in. | flat & roundhead |
| 8 ga. | = | 0.1640 in.dia. shank | 3/4 in. | flat, round & ovalhead |
| 8 ga. | = | 0.1640 in.dia. shank | 1 in. | flat, round & ovalhead |
| 8 ga. | = | 0.1640 in.dia. shank | 1 1/4 in. | flat, round & ovalhead |
| 8 ga. | = | 0.1640 in.dia. shank | 1 1/2 in. | flat, round & ovalhead |
| 8 ga. | = | 0.1640 in.dia. shank | 1 3/4 in. | flathead |
| 8 ga. | = | 0.1640 in.dia. shank | 2 in. | flat, round & ovalhead |
| 8 ga. | = | 0.1640 in.dia. shank | 2 1/4 in. | flathead |
| 8 ga. | = | 0.1640 in.dia. shank | 2 1/2 in. | flat & roundhead |
| 8 ga. | = | 0.1640 in.dia. shank | 2 3/4 in. | flathead |
| 8 ga. | = | 0.1640 in.dia. shank | 3 in. | flathead |
| 8 ga. | = | 0.1640 in.dia. shank | 3 1/2 in. | flathead |
| 9 ga. | = | 0.1770 in.dia. shank | 1 in. | flathead |
| 9 ga. | = | 0.1770 in.dia. shank | 1 1/4 in. | flathead |
| 9 ga. | = | 0.1770 in.dia. shank | 1 1/2 in. | flathead |
| 10 ga. | = | 0.1900 in.dia. shank | 1/2 in. | flathead |
| 10 ga. | = | 0.1900 in.dia. shank | 5/8 in. | flat & roundhead |
| 10 ga. | = | 0.1900 in.dia. shank | 3/4 in. | flat & roundhead |
| 10 ga. | = | 0.1900 in.dia. shank | 1 in. | flat, round & ovalhead |
| 10 ga. | = | 0.1900 in.dia. shank | 1 1/4 in. | flat, round & ovalhead |
| 10 ga. | = | 0.1900 in.dia. shank | 1 1/2 in. | flat, round & ovalhead |
| 10 ga. | = | 0.1900 in.dia. shank | 1 3/4 in. | flat, round & ovalhead |
| 10 ga. | = | 0.1900 in.dia. shank | 2 in. | flat, round & ovalhead |
| 10 ga. | = | 0.1900 in.dia. shank | 2 1/4 in. | flathead |
| 10 ga. | = | 0.1900 in.dia. shank | 2 1/2 in. | flat & roundhead |
| 10 ga. | = | 0.1900 in.dia. shank | 2 3/4 in. | flathead |
| 10 ga. | = | 0.1900 in.dia. shank | 3 in. | flat & roundhead |
| 10 ga. | = | 0.1900 in.dia. shank | 3 1/4 in. | flathead |
| 10 ga. | = | 0.1900 in.dia. shank | 3 1/2 in. | flathead |
| 10 ga. | = | 0.1900 in.dia. shank | 4 in. | flathead |
| 11 ga. | = | 0.2030 in.dia. shank | 3/4 in. | flathead |
| 11 ga. | = | 0.2030 in.dia. shank | 1 in. | flat & roundhead |
| 11 ga. | = | 0.2030 in.dia. shank | 1 1/4 in. | flat & roundhead |
| 11 ga. | = | 0.2030 in.dia. shank | 1 1/2 in. | flat & roundhead |
| 11 ga. | = | 0.2030 in.dia. shank | 2 in. | flat & roundhead |
| 11 ga. | = | 0.2030 in.dia. shank | 2 1/2 in. | flat & roundhead |
| 11 ga. | = | 0.2030 in.dia. shank | 3 in. | flat & roundhead |
| 11 ga. | = | 0.2030 in.dia. shank | 3 1/2 in. | flathead |
| 11 ga. | = | 0.2030 in.dia. shank | 4 in. | flathead |
| 12 ga. | = | 0.2160 in.dia. shank | 3/4 in. | flathead |
| 12 ga. | = | 0.2160 in.dia. shank | 1 in. | flat & roundhead |
| 12 ga. | = | 0.2160 in.dia. shank | 1 1/4 in. | flat & roundhead |
| 12 ga. | = | 0.2160 in.dia. shank | 1 1/2 in. | flat & roundhead |
| 12 ga. | = | 0.2160 in.dia. shank | 2 in. | flat & roundhead |
| 12 ga. | = | 0.2160 in.dia. shank | 2 1/2 in. | flat & roundhead |
| 12 ga. | = | 0.2160 in.dia. shank | 3 in. | flat & roundhead |
| 12 ga. | = | 0.2160 in.dia. shank | 3 1/2 in. | flathead |
| 12 ga. | = | 0.2160 in.dia. shank | 4 in. | flathead |
| 12 ga. | = | 0.2160 in.dia. shank | 5 in. | flathead |
| 14 ga. | = | 0.2420 in.dia. shank | 1 1/4 in. | flathead |
| 14 ga. | = | 0.2420 in.dia. shank | 1 1/2 in. | flat & roundhead |
| 14 ga. | = | 0.2420 in.dia. shank | 2 in. | flat & roundhead |
| 14 ga. | = | 0.2420 in.dia. shank | 2 1/2 in. | flathead |
| 14 ga. | = | 0.2420 in.dia. shank | 3 in. | flathead |
| 14 ga. | = | 0.2420 in.dia. shank | 4 in. | flathead |
| 14 ga. | = | 0.2420 in.dia. shank | 5 in. | flathead |
| 14 ga. | = | 0.2420 in.dia. shank | 6 in. | flathead |
| 1/4 inch shank | = | 0.2500 in.dia. shank | - | - |
| 16 ga. | = | 0.2680 in.dia. shank | 1 1/2 in. | flathead |
| 16 ga. | = | 0.2680 in.dia. shank | 2 in. | flathead |
| 16 ga. | = | 0.2680 in.dia. shank | 2 1/2 in. | flathead |
| 16 ga. | = | 0.2680 in.dia. shank | 3 in. | flathead |
| 16 ga. | = | 0.2680 in.dia. shank | 4 in. | flathead |
| 16 ga. | = | 0.2680 in.dia. shank | 5 in. | flathead |
| 16 ga. | = | 0.2680 in.dia. shank | 6 in. | flathead |
| 18 ga. | = | 0.2940 in.dia. shank | 2 in. | flathead |
| 18 ga. | = | 0.2940 in.dia. shank | 3 in. | flathead |
| 18 ga. | = | 0.2940 in.dia. shank | 4 in. | flathead |
| 5/16 inch shank | = | 0.3125 in.dia. shank | - | - |
| 20 ga. | = | 0.3200 in.dia. shank | 2 in. | flathead |
| 20 ga. | = | 0.3200 in.dia. shank | 3 in. | flathead |
| 20 ga. | = | 0.3200 in.dia. shank | 4 in. | flathead |
| 22 ga. | = | 0.3460 in.dia. shank | - | - |
| 24 ga. | = | 0.3720 in.dia. shank | - | - |
| unused ASG | = | American Screw Gages 13, 15, 17, 19, 21, & 23, not used by any screw |
| 3/8 inch shank | = | 0.3750 in.dia. shank | - | - |
| 7/16 inch shank | = | 0.4375 in.dia. shank | - | - |
| 1/2 inch shank | = | 0.5000 in.dia. shank | - | - |
| 9/16 inch shank | = | 0.5625 in.dia. shank | - | - |
| 5/8 inch shank | = | 0.6250 in.dia. shank | - | - |
| 3/4 inch shank | = | 0.7500 in.dia. shank | - | - |
| 7/8 inch shank | = | 0.8750 in.dia. shank | - | - |
| 1-000 inch shank | = | 1.0000 in.dia. shank | - | - |
| 1-1/8 inch shank | = | 1.1250 in.dia. shank | - | - |
| 1-1/4 inch shank | = | 1.2500 in.dia. shank | - | - |
| 1-3/8 inch shank | = | 1.3750 in.dia. shank | - | - |
| 1-1/2 inch shank | = | 1.5000 in.dia. shank | - | - |
| 1-5/8 inch shank | = | 1.6250 in.dia. shank | - | - |
| 1-3/4 inch shank | = | 1.7500 in.dia. shank | - | - |
| 1-7/8 inch shank | = | 1.8750 in.dia. shank | - | - |
| 2-000 inch shank | = | 2.0000 in.dia. shank | - | - |
| 2-1/4 inch shank | = | 2.2500 in.dia. shank | - | - |
| 2-1/2 inch shank | = | 2.5000 in.dia. shank | - | - |
| 2-3/4 inch shank | = | 2.7500 in.dia. shank | - | - |
| 3-000 inch shank | = | 3.0000 in.dia. shank | - | - |
| 3-1/4 inch shank | = | 3.2500 in.dia. shank | - | - |
| 3-1/2 inch shank | = | 3.5000 in.dia. shank | - | - |
| 3-3/4 inch shank | = | 3.7500 in.dia. shank | - | - |
| 4-000 inch shank | = | 4.0000 in.dia. shank | - | - |
| • |
| WSG | = | Wilkinson Screw Gage |
| WSG no. | = | (shank dia. - 0.056'') ÷ 0.01325'' |
| ASG | = | American Screw Gage |
| ASG no. | = | (shank dia. - 0.060'') ÷ 0.01300'' |
| • |
| bindinghead u/c machine screw | = | length from bottom of bindinghead to screw end (bindinghead undercut) |
| fillisterhead machine screw | = | length from bottom of fillisterhead to screw end |
| flathead wood screw | = | length from top of flathead to screw point, 82 deg. countersink flathead |
| flathead tapping screw | = | lth. from top of flathead to screw point/end, 82 deg. countersink flathead |
| flathead machine screw | = | length from top of flathead to screw end, 82 deg. countersink flathead |
| flathead undercut tapping screw | = | lth. from top of flathead to screw point/end, 82 deg. countersink flathead |
| flathhead undercut machine screw | = | length from top of flathead to screw end, 82 deg. countersink flathead |
| flathead 100 deg. tapping screw | = | lth. from top of flathead to screw point/end, 100 deg. countersink f/head |
| flathead 100 deg. machine screw | = | length from top of flathead to screw end, 100 deg. countersink flathead |
| hexhead self-drilling screw | = | length from bottom of hexhead to screw point |
| hexhead tapping screw | = | length from bottom of hexhead to screw point or end |
| hexhead machine screw | = | length from bottom of hexhead to screw end |
| hexwasherhead self-piercing screw | = | length from bottom of hexwasherhead to screw point |
| hexwasherhead self-drilling screw | = | length from bottom of hexwasherhead to screw point |
| hexwasherhead tapping screw | = | length from bottom of hexwasherhead to screw point or end |
| hexwasherhead machine screw | = | length from bottom of hexwasherhead to screw end |
| ovalhead wood screw | = | lth. from rim of ovalhead to screw point, 82 deg. countersink ovalhead |
| ovalhead tapping screw | = | lth. from rim of ovalhead to screw point/end, 82 deg. countersink o/head |
| ovalhead machine screw | = | length from rim of ovalhead to screw end, 82 deg. countersink ovalhead |
| panhead self-drilling screw | = | length from bottom of panhead to screw point |
| panhead tapping screw | = | length from bottom of panhead to screw point or end |
| panhead machine screw | = | length from bottom of panhead to screw end |
| roundhead wood screw | = | length from bottom of roundhead to screw point |
| roundhead tapping screw | = | length from bottom of roundhead to screw point or end |
| roundhead machine screw | = | length from bottom of roundhead to screw end |
| trusshead tapping screw | = | length from bottom of trusshead to screw point or end |
| trusshead machine screw | = | length from bottom of trusshead to screw end |
| waferhead self-drilling screw | = | length from top of waferhead to point, 70 deg. countersink waferhead |
| • | ||||
| 24 AWG | = | 0.02016 in.dia. shank | proposed gage | |
| 23 AWG | = | 0.02263 in.dia. shank | proposed gage | |
| 22 AWG | = | 0.02540 in.dia. shank | proposed gage | |
| 21 AWG | = | 0.02851 in.dia. shank | proposed gage | |
| 20 AWG | = | 0.03200 in.dia. shank | proposed gage | |
| 19 AWG | = | 0.03592 in.dia. shank | proposed gage | |
| 18 AWG | = | 0.04320 in.dia. shank | proposed gage | |
| 17 AWG | = | 0.04525 in.dia. shank | proposed gage | |
| 16 AWG | = | 0.05080 in.dia. shank | proposed gage | |
| 15 AWG | = | 0.05702 in.dia. shank | proposed gage | |
| 14 AWG | = | 0.06400 in.dia. shank | proposed gage | |
| 13 AWG | = | 0.07184 in.dia. shank | proposed gage | |
| 12 AWG | = | 0.08063 in.dia. shank | proposed gage | |
| 11 AWG | = | 0.09051 in.dia. shank | proposed gage | |
| 10 AWG | = | 0.1016 in.dia. shank | proposed gage | |
| 9 AWG | = | 0.1140 in.dia. shank | proposed gage | |
| 8 AWG | = | 0.1280 in.dia. shank | proposed gage | |
| 7 AWG | = | 0.1437 in.dia. shank | proposed gage | |
| 6 AWG | = | 0.1613 in.dia. shank | proposed gage | |
| 5 AWG | = | 0.1810 in.dia. shank | proposed gage | |
| 4 AWG | = | 0.2032 in.dia. shank | proposed gage | |
| 3 AWG | = | 0.2281 in.dia. shank | proposed gage | |
| 2 AWG | = | 0.2560 in.dia. shank | proposed gage | |
| 1 AWG | = | 0.2874 in.dia. shank | proposed gage | |
| 0 AWG | = | 0.3225 in.dia. shank | (1/0 AWG) | proposed gage |
| 00 AWG | = | 0.3620 in.dia. shank | (2/0 AWG) | proposed gage |
| 000 AWG | = | 0.4064 in.dia. shank | (3/0 AWG) | proposed gage |
| 0000 AWG | = | 0.4561 in.dia. shank | (4/0 AWG) | proposed gage |
| 00,000 AWG | = | 0.5120 in.dia. shank | (5/0 AWG) | proposed gage |
| 000,000 AWG | = | 0.5747 in.dia. shank | (6/0 AWG) | proposed gage |
| N AWG | = | 0.6451 in.dia. shank | (1/N AWG) | proposed gage |
| NN AWG | = | 0.7241 in.dia. shank | (2/N AWG) | proposed gage |
| NNN AWG | = | 0.8127 in.dia. shank | (3/N AWG) | proposed gage |
| NNNN AWG | = | 0.9123 in.dia. shank | (4/N AWG) | proposed gage |
| NN,NNN AWG | = | 1.024 in.dia. shank | (5/N AWG) | proposed gage |
| NNN,NNN AWG | = | 1.149 in.dia. shank | (6/N AWG) | proposed gage |
| M AWG | = | 1.290 in.dia. shank | (1/M AWG) | proposed gage |
| MM AWG | = | 1.448 in.dia. shank | (2/M AWG) | proposed gage |
| MMM AWG | = | 1.625 in.dia. shank | (3/M AWG) | proposed gage |
| MMMM AWG | = | 1.825 in.dia. shank | (4/M AWG) | proposed gage |
| MM,MMM AWG | = | 2.048 in.dia. shank | (5/M AWG) | proposed gage |
| MMM,MMM AWG | = | 2.299 in.dia. shank | (6/M AWG) | proposed gage |
| L AWG | = | 2.580 in.dia. shank | (1/L AWG) | proposed gage |
| LL AWG | = | 2.896 in.dia. shank | (2/L AWG) | proposed gage |
| LLL AWG | = | 3.251 in.dia. shank | (3/L AWG) | proposed gage |
| LLLL AWG | = | 3.649 in.dia. shank | (4/L AWG) | proposed gage |
| LL,LLL AWG | = | 4.096 in.dia. shank | (5/L AWG) | proposed gage |
| LLL,LLL AWG | = | 4.598 in.dia. shank | (6/L AWG) | proposed gage |
| LEATHER SEALER'S OFFICE, Londonderry, Vt. | April 8th 1826 | Rory Ely Cole |
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