
| nominal diameter range (in) | machine screw size number (in) Blank Design 1 | nom fract diam (i | inal ional eter n) | nom me diam mm Blan | inal tric eter (in) k Design 2 | blank design number | overall length L | thread length l B | square length l2 lank Design 3 | shank diameter D1 | square size A |
| .052–.065 | 0 (.0600) | — | M1.6 | (.0630) | 1 | 1.63 | .31 | .19 | .1410 | .110 | |
| .065–.078 | 1 (.0730) | — | M1.8 | (.0709) | 1 | 1.69 | .38 | .19 | .1410 | .110 | |
| .078–.091 | 2 (.0860) | — | M2 (0787), | M2.2 (.0866) | 1 | 1.75 | .44 | .19 | .1410 | .110 | |
| .091–.104 | 3 (.0990) | — | M2.5 | (.0984) | 1 | 1.81 | .50 | .19 | .1410 | .110 | |
| .104–.117 | 4 (.1120) | — | — | — | 1 | 1.88 | .56 | .19 | .1410 | .110 | |
| .117–.130 | 5 (.1250) | — | M3 | (.1181) | 1 | 1.94 | .63 | .19 | .1410 | .110 | |
| .130–.145 | 6 (.1380) | — | M3.5 | (.1378) | 1 | 2.00 | .69 | .19 | .1410 | .110 | |
| .145–.171 | 8 (.1640) | — | M4 | (.1575) | 1 | 2.13 | .75 | .25 | .1680 | .131 | |
| .171–.197 | 10 (.1900) | — | M4.5 (.1772), | M5 (.1969) | 1 | 2.38 | .88 | .25 | .1940 | .152 | |
| .197–.223 | 12 (.2160) | — | — | — | 1 | 2.38 | .94 | .28 | .2200 | .165 | |
| .223–.260 | — | 1/4 | (.2500) | M6 | (.2362) | 2 | 2.50 | 1.00 | .31 | .2550 | .191 |
| .260–.323 | — | 5/16 | (.3125) | M7(.2756), | M8(.3150) | 2 | 2.72 | 1.13 | .38 | .3180 | .238 |
| .323–.395 | — | 3/8 | (.3750) | M10 | (.3937) | 2 | 2.94 | 1.25 | .44 | .3810 | .286 |
| .395–.448 | — | 7/16 | (.4375) | — | — | 3 | 3.16 | 1.44 | .41 | .3230 | .242 |
| .448–.510 | — | 1/2 | (.5000) | M12 | (.4724) | 3 | 3.38 | 1.66 | .44 | .3670 | .275 |
| .510–.573 | — | 9/16 | (.5625) | M14 | (.5512) | 3 | 3.59 | 1.66 | .50 | .4290 | .322 |
| .573–.635 | — | 5/8 | (.6250) | M16 | (.6299) | 3 | 3.81 | 1.81 | .56 | .4800 | .360 |
| .635–.709 | — | 11/16 | (.6875) | M18 | (.7087) | 3 | 4.03 | 1.81 | .63 | .5420 | .406 |
| .709–.760 | — | 3/4 | (.7500) | — | — | 3 | 4.25 | 2.00 | .69 | .5900 | .442 |
| .760–.823 | — | 13/16 | (.8125) | M20 | (.7874) | 3 | 4.47 | 2.00 | .69 | .6520 | .489 |
| .823–.885 | — | 7/8 | (.8750) | M22 | (.8661) | 3 | 4.69 | 2.22 | .75 | .6970 | .523 |
| .885–.948 | — | 15/16 | (.9375) | M24 | (.9449) | 3 | 4.91 | 2.22 | .75 | .7600 | .570 |
| .948–1.010 | — | 1 | (1.0000) | M25 | (.9843) | 3 | 5.13 | 2.50 | .81 | .8000 | .600 |
| 1.010–1.073 | — | 1-1/16 | (1.0625) | M27 | (1.0630) | 3 | 5.13 | 2.50 | .88 | .8960 | .672 |
| 1.073–1.135 | — | 1-1/8 | (1.1250) | — | — | 3 | 5.44 | 2.56 | .88 | .8960 | .672 |
| 1.135–1.198 | — | 1-3/16 | (1.1875) | M30 | (1.1811) | 3 | 5.44 | 2.56 | 1.00 | 1.0210 | .766 |
| 1.198–1.260 | — | 1-1/4 | (1.2500) | — | — | 3 | 5.75 | 2.56 | 1.00 | 1.0210 | .766 |
| 1.260–1.323 | — | 1-5/16 | (1.3125) | M33 | (1.2992) | 3 | 5.75 | 2.56 | 1.06 | 1.1080 | .831 |
| 1.323–1.385 | — | 1-3/8 | (1.3750) | — | — | 3 | 6.06 | 3.00 | 1.06 | 1.1080 | .831 |
| 1.358–1.448 | — | 1-7/16 | (1.4375) | M36 | (1.4173) | 3 | 6.06 | 3.00 | 1.13 | 1.2330 | .925 |
| 1.448–1.510 | — | 1-1/2 | (1.5000) | — | — | 3 | 6.38 | 3.00 | 1.13 | 1.2330 | .925 |
| 1.510–1.635 | — | 1-5/8 | (1.6250) | M39 | (1.5354) | 3 | 6.69 | 3.19 | 1.13 | 1.3050 | .979 |
| 1.635–1.760 | — | 1-3/4 | (1.7500) | M42 | (1.6535) | 3 | 7.00 | 3.19 | 1.25 | 1.4300 | 1.072 |
| 1.760–1.885 | — | 1-7/8 | (1.8750) | — | — | 3 | 7.31 | 3.56 | 1.25 | 1.5190 | 1.139 |
| 1.885–2.010 | — | 2 | (2.0000) | M48 | (1.8898) | 3 | 7.63 | 3.56 | 1.38 | 1.6440 | 1.233 |
| 2.010–2.135 | — | 2-1/8 | (2.1250) | — | — | 3 | 8.00 | 3.56 | 1.38 | 1.7690 | 1.327 |
| 2.135–2.260 | — | 2-1/4 | (2.2500) | M56 | (2.2047) | 3 | 8.25 | 3.56 | 1.44 | 1.8940 | 1.420 |
| 2.260–2.385 | — | 2-3/8 | (2.3750) | — | — | 3 | 8.50 | 4.00 | 1.44 | 2.0190 | 1.514 |
| 2.385–2.510 | — | 2-1/2 | (2.5000) | — | — | 3 | 8.75 | 4.00 | 1.50 | 2.1000 | 1.575 |
| 2.510–2.635 | — | 2-5/8 | (2.6250) | M64 | (2.5197) | 3 | 8.75 | 4.00 | 1.50 | 2.2250 | 1.669 |
| 2.635–2.760 | — | 2-3/4 | (2.7500) | — | — | 3 | 9.25 | 4.00 | 1.56 | 2.3500 | 1.762 |
| 2.760–2.885 | — | 2-7/8 | (2.8750) | M72 | (2.8346) | 3 | 9.25 | 4.00 | 1.56 | 2.4750 | 1.856 |
| 2.885–3.010 | — | 3 | (3.0000) | — | — | 3 | 9.75 | 4.56 | 1.63 | 2.5430 | 1.907 |
| 3.010–3.135 | — | 3-1/8 | (3.1250) | — | — | 3 | 9.75 | 4.56 | 1.63 | 2.6680 | 2.001 |
| 3.135–3.260 3.260–3.385 | — — | 3-1/4 3-3/8 | (3.2500) (3.3750) | M80 — | (3.1496) — | 3 3 | 10.00 10.00 | 4.56 4.56 | 1.75 1.75 | 2.7930 2.8830 | 2.095 2.162 |
| 3.385–3.510 | — | 3-1/2 | (3.5000) | — | — | 3 | 10.25 | 4.94 | 2.00 | 3.0080 | 2.256 |
| 3.510–3.635 | — | 3-5/8 | (3.6250) | M90 | (3.5433) | 3 | 10.25 | 4.94 | 2.00 | 3.1330 | 2.350 |
| 3.635–3.760 | — | 3-3/4 | (3.7500) | — | — | 3 | 10.50 | 5.31 | 2.13 | 3.2170 | 2.413 |
| 3.760–3.885 | — | 3-7/8 | (3.8750) | — | — | 3 | 10.50 | 5.31 | 2.13 | 3.3420 | 2.506 |
| 3.885–4.010 | — | 4 | (4.0000) | M100 | (3.9370) | 3 | 10.75 | 5.31 | 2.25 | 3.4670 | 2.600 |