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DEC Equivalents
| Nominal Size | millimeter | Decimal Equivalent |
| -- | .1 | .0039 |
| -- | .2 | .0079 |
| -- | .3 | .0118 |
| 80 | -- | .0135 |
| 79 | -- | .0145 |
| 1/64 | -- | .0156 |
| -- | .4 | .0157 |
| 78 | -- | .0160 |
| 77 | -- | .0180 |
| -- | .5 | .0197 |
| 76 | -- | .0200 |
| 75 | -- | .0210 |
| 74 | -- | .0225 |
| -- | .6 | .0236 |
| 73 | -- | .0240 |
| 72 | -- | .0250 |
| 71 | -- | .0260 |
| -- | .7 | .0276 |
| 70 | -- | .0280 |
| 69 | -- | .0292 |
| 68 | -- | .0310 |
| 1/32 | -- | .0312 |
| -- | .8 | .0315 |
| 67 | -- | .0320 |
| 66 | -- | .0330 |
| 65 | -- | .0350 |
| -- | .9 | .0354 |
| 64 | -- | .0360 |
| 63 | -- | .0370 |
| 62 | -- | .0380 |
| 61 | -- | .0390 |
| -- | 1.0 | .0394 |
| 60 | -- | .0400 |
| 59 | -- | .0410 |
| 58 | -- | .0420 |
| 57 | -- | .0430 |
| 56 | -- | .0465 |
| 3/64 | -- | .0469 |
| 55 | -- | .0520 |
| 54 | -- | .0550 |
| 53 | -- | .0595 |
| 1/16 | -- | .0625 |
| 52 | -- | .0635 |
| 51 | -- | .0670 |
| 50 | -- | .0700 |
| 49 | -- | .0730 |
| 48 | -- | .0760 |
| 5/64 | -- | .0781 |
| 47 | -- | .0785 |
| -- | 2.0 | .0787 |
| 46 | -- | .0810 |
| 45 | -- | .0820 |
| 44 | -- | .0860 |
| 43 | -- | .0890 |
| 42 | -- | .0935 |
| 3/32 | -- | .0937 |
| 41 | -- | .0960 |
| 40 | -- | .0980 |
| 39 | -- | .0995 |
| 38 | -- | .1015 |
| 37 | -- | .1040 |
| 36 | -- | .1065 |
| 7/64 | -- | .1094 |
| 35 | -- | .1100 |
| 34 | -- | .1110 |
| 33 | -- | .1130 |
| 32 | -- | .1160 |
| -- | 3.0 | .1181 |
| 31 | -- | .1200 |
| 1/8 | -- | .1250 |
| 30 | -- | .1285 |
| 29 | -- | .1360 |
| 28 | -- | .1405 |
| 9/64 | -- | .1406 |
| 27 | -- | .1440 |
| 26 | -- | .1470 |
| 25 | -- | .1495 |
| 24 | -- | .1520 |
| 23 | -- | .1540 |
| 5/32 | -- | .1562 |
| 22 | -- | .1570 |
| -- | 4.0 | .1575 |
| 21 | -- | .1590 |
| 20 | -- | .1610 |
| 19 | -- | .1660 |
| 18 | -- | .1695 |
| 11/64 | -- | .1719 |
| 17 | -- | .1730 |
| 16 | -- | .1770 |
| 15 | -- | .1800 |
| 14 | -- | .1820 |
| 13 | -- | .1850 |
| 3/16 | -- | .1875 |
| 12 | -- | .1890 |
| 11 | -- | .1910 |
| 10 | -- | .1935 |
| 9 | -- | .1960 |
| -- | 5.0 | .1968 |
| 8 | -- | .1990 |
| 7 | -- | .2010 |
| 13/64 | -- | .2031 |
| 6 | -- | .2040 |
| 5 | -- | .2055 |
| 4 | -- | .2090 |
| 3 | -- | .2130 |
| 7/32 | -- | .2187 |
| 2 | -- | .2210 |
| 1 | -- | .2280 |
| A | -- | .2340 |
| 15/64 | -- | .2344 |
| -- | 6.0 | .2362 |
| B | -- | .2380 |
| C | -- | .2420 |
| D | -- | .2460 |
| 1/4-E | -- | .2500 |
| F | -- | .2570 |
| G | -- | .2610 |
| 17/64 | -- | .2656 |
| H | -- | .2660 |
| I | -- | .2720 |
| -- | 7.0 | .2756 |
| J | -- | .2770 |
| K | -- | .2810 |
| 9/32 | -- | .2812 |
| L | -- | .2900 |
| M | -- | .2950 |
| 19/64 | -- | .2969 |
| N | -- | .3020 |
| 5/16 | -- | .3125 |
| -- | 8.0 | .3150 |
| O | -- | .3160 |
| P | -- | .3230 |
| 21/64 | -- | .3281 |
| Q | -- | .3320 |
| R | -- | .3390 |
| 11/32 | -- | .3437 |
| S | -- | .3480 |
| -- | 9.0 | .3543 |
| T | -- | .3580 |
| 23/64 | -- | .3594 |
| U | -- | .3680 |
| 3/8 | -- | .3750 |
| V | -- | .3770 |
| W | -- | .3860 |
| 25/64 | -- | .3906 |
| -- | 10.0 | .3937 |
| X | -- | .3970 |
| Y | -- | .4040 |
| 13/32 | -- | .4062 |
| Z | -- | .4130 |
| 27/64 | -- | .4219 |
| -- | 11.0 | .4331 |
| 7/16 | -- | .4375 |
| 29/64 | -- | .4531 |
| 15/32 | -- | .4687 |
| -- | 12.0 | .4724 |
| 31/64 | -- | .4844 |
| 1/2 | -- | .5000 |
| -- | 13.0 | .5118 |
| 33/64 | -- | .5156 |
| 17/32 | -- | .5312 |
| 35/64 | -- | .5469 |
| -- | 14.0 | .5512 |
| 9/16 | -- | .5625 |
| 37/64 | -- | .5781 |
| -- | 15.0 | .5906 |
| 19/32 | -- | .5937 |
| 39/64 | -- | .6094 |
| 5/8 | -- | .6250 |
| -- | 16.0 | .6299 |
| 41/64 | -- | .6406 |
| 21/32 | -- | .6562 |
| -- | 17.0 | .6693 |
| 43/64 | -- | .6719 |
| 11/16 | -- | .6875 |
| 45/64 | -- | .7031 |
| -- | 18.0 | .7087 |
| 23/32 | -- | .7187 |
| 47/64 | -- | .7344 |
| -- | 19.0 | .7480 |
| 3/4 | -- | .7500 |
| 49/64 | -- | .7656 |
| 25/32 | -- | .7812 |
| -- | 20.0 | .7874 |
| 51/64 | -- | .7969 |
| 13/16 | -- | .8125 |
| -- | 21.0 | .8268 |
| 53/64 | -- | .8281 |
| 27/32 | -- | .8437 |
| 55/64 | -- | .8594 |
| -- | 22.0 | .8661 |
| 7/8 | -- | .8750 |
| 57/64 | -- | .8906 |
| -- | 23.0 | .9055 |
| 29/32 | -- | .9062 |
| 59/64 | -- | .9219 |
| 15/16 | -- | .9375 |
| -- | 24.0 | .9449 |
| 61/64 | -- | .9531 |
| 31/32 | -- | .9687 |
| -- | 25.0 | .9842 |
| 63/64 | -- | .9844 |
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