DRILL SIZE DECIMAL EQUIVALENTS
We do not recommend drilling out jets as the result can be a hole that is not perpendicular, an out of round hole, burr in hole and more. Most do not have the equipment to properly drill ou the jet and the needle to jet relationship is degraded. However sometimes in a pinch drilling out a jet will be needed. The following information is provided as a reference.
| Drill size | Diameter (in) | Diameter (mm) |
| #107 | 0.0019 | 0.0483 |
| 0.05 mm | 0.002 | 0.05 |
| #106 | 0.0023 | 0.0584 |
| #105 | 0.0027 | 0.0686 |
| #104 | 0.0031 | 0.0787 |
| #103 | 0.0035 | 0.0889 |
| #102 | 0.0039 | 0.0991 |
| 0.1 mm | 0.0039 | 0.1 |
| #101 | 0.0043 | 0.1092 |
| #100 | 0.0047 | 0.1194 |
| #99 | 0.0051 | 0.1295 |
| #98 | 0.0055 | 0.1397 |
| #97 | 0.0059 | 0.1499 |
| #96 | 0.0063 | 0.16 |
| #95 | 0.0067 | 0.1702 |
| #94 | 0.0071 | 0.1803 |
| #93 | 0.0075 | 0.1905 |
| 0.2 mm | 0.0079 | 0.2 |
| #92 | 0.0079 | 0.2007 |
| #91 | 0.0083 | 0.2108 |
| #90 | 0.0087 | 0.221 |
| #89 | 0.0091 | 0.2311 |
| #88 | 0.0095 | 0.2413 |
| #87 | 0.01 | 0.254 |
| #86 | 0.0105 | 0.2667 |
| #85 | 0.011 | 0.2794 |
| #84 | 0.0115 | 0.2921 |
| 0.3 mm | 0.0118 | 0.3 |
| #83 | 0.012 | 0.3048 |
| #82 | 0.0125 | 0.3175 |
| #81 | 0.013 | 0.3302 |
| #80 | 0.0135 | 0.3429 |
| #79 | 0.0145 | 0.368 |
| 1/64 in | 0.0156 | 0.3969 |
| 0.4 mm | 0.0158 | 0.4 |
| #78 | 0.016 | 0.4064 |
| #77 | 0.018 | 0.4572 |
| 0.5 mm | 0.0197 | 0.5 |
| #76 | 0.02 | 0.508 |
| #75 | 0.021 | 0.5334 |
| #74 | 0.0225 | 0.5715 |
| 0.6 mm | 0.0236 | 0.6 |
| #73 | 0.024 | 0.6096 |
| #72 | 0.025 | 0.635 |
| #71 | 0.026 | 0.6604 |
| 0.7 mm | 0.0276 | 0.7 |
| #70 | 0.028 | 0.7112 |
| #69 | 0.0292 | 0.7417 |
| #68 | 0.031 | 0.7874 |
| 1/32 in | 0.0313 | 0.7938 |
| 0.8 mm | 0.0315 | 0.8 |
| #67 | 0.032 | 0.8128 |
| #66 | 0.033 | 0.8382 |
| #65 | 0.035 | 0.889 |
| 0.9 mm | 0.0354 | 0.9 |
| #64 | 0.036 | 0.9144 |
| #63 | 0.037 | 0.9398 |
| #62 | 0.038 | 0.9652 |
| #61 | 0.039 | 0.9906 |
| 1 mm | 0.0394 | 1 |
| #60 | 0.04 | 1.016 |
| #59 | 0.041 | 1.0414 |
| #58 | 0.042 | 1.0668 |
| #57 | 0.043 | 1.0922 |
| 1.1 mm | 0.0433 | 1.1 |
| #56 | 0.0465 | 1.1811 |
| 3/64 in | 0.0469 | 1.1906 |
| 1.2 mm | 0.0472 | 1.2 |
| 1.3 mm | 0.0512 | 1.3 |
| #55 | 0.052 | 1.3208 |
| #54 | 0.055 | 1.397 |
| 1.4 mm | 0.0551 | 1.4 |
| 1.5 mm | 0.0591 | 1.5 |
| #53 | 0.0595 | 1.5113 |
| 1/16 in | 0.0625 | 1.5875 |
| 1.6 mm | 0.063 | 1.6 |
| #52 | 0.0635 | 1.6129 |
| 1.7 mm | 0.0669 | 1.7 |
| #51 | 0.067 | 1.7018 |
| #50 | 0.07 | 1.778 |
| 1.8 mm | 0.0709 | 1.8 |
| #49 | 0.073 | 1.8542 |
| 1.9 mm | 0.0748 | 1.9 |
| #48 | 0.076 | 1.9304 |
| 5/64 in | 0.0781 | 1.9844 |
| #47 | 0.0785 | 1.9939 |
| 2 mm | 0.0787 | 2 |
| #46 | 0.081 | 2.0574 |
| #45 | 0.082 | 2.0828 |
| 2.1 mm | 0.0827 | 2.1 |
| #44 | 0.086 | 2.1844 |
| 2.2 mm | 0.0866 | 2.2 |
| #43 | 0.089 | 2.2606 |
| 2.3 mm | 0.0906 | 2.3 |
| #42 | 0.0935 | 2.3749 |
| 3/32 in | 0.0938 | 2.3813 |
| 2.4 mm | 0.0945 | 2.4 |
| #41 | 0.096 | 2.4384 |
| #40 | 0.098 | 2.4892 |
| 2.5 mm | 0.0984 | 2.5 |
| #39 | 0.0995 | 2.5273 |
| #38 | 0.1015 | 2.5781 |
| 2.6 mm | 0.1024 | 2.6 |
| #37 | 0.104 | 2.6416 |
| 2.7 mm | 0.1063 | 2.7 |
| #36 | 0.1065 | 2.7051 |
| 7/64 in | 0.1094 | 2.7781 |
| #35 | 0.11 | 2.794 |
| 2.8 mm | 0.1102 | 2.8 |
| #34 | 0.111 | 2.8194 |
| #33 | 0.113 | 2.8702 |
| 2.9 mm | 0.1142 | 2.9 |
| #32 | 0.116 | 2.9464 |
| 3 mm | 0.1181 | 3 |
| #31 | 0.12 | 3.048 |
| 3.1 mm | 0.1221 | 3.1 |
| 1/8 in | 0.125 | 3.175 |
| 3.2 mm | 0.126 | 3.2 |
| #30 | 0.1285 | 3.2639 |
| 3.3 mm | 0.1299 | 3.3 |
| 3.4 mm | 0.1339 | 3.4 |
| #29 | 0.136 | 3.4544 |
| 3.5 mm | 0.1378 | 3.5 |
| #28 | 0.1405 | 3.5687 |
| 9/64 in | 0.1406 | 3.5719 |
| 3.6 mm | 0.1417 | 3.6 |
| #27 | 0.144 | 3.6576 |
| 3.7 mm | 0.1457 | 3.7 |
| #26 | 0.147 | 3.7338 |
| #25 | 0.1495 | 3.7973 |
| 3.8 mm | 0.1496 | 3.8 |
| #24 | 0.152 | 3.8608 |
| 3.9 mm | 0.1535 | 3.9 |
| #23 | 0.154 | 3.9116 |
| 5/32 in | 0.1563 | 3.9688 |
| #22 | 0.157 | 3.9878 |
| 4 mm | 0.1575 | 4 |
| #21 | 0.159 | 4.0386 |
| #20 | 0.161 | 4.0894 |
| 4.1 mm | 0.1614 | 4.1 |
| 4.2 mm | 0.1654 | 4.2 |
| #19 | 0.166 | 4.2164 |
| 4.3 mm | 0.1693 | 4.3 |
| #18 | 0.1695 | 4.3053 |
| 11/64 in | 0.1719 | 4.3656 |
| #17 | 0.173 | 4.3942 |
| 4.4 mm | 0.1732 | 4.4 |
| #16 | 0.177 | 4.4958 |
| 4.5 mm | 0.1772 | 4.5 |
| #15 | 0.18 | 4.572 |
| 4.6 mm | 0.1811 | 4.6 |
| #14 | 0.182 | 4.6228 |
| #13 | 0.185 | 4.699 |
| 4.7 mm | 0.185 | 4.7 |
| 3/16 in | 0.1875 | 4.7625 |
| 4.8 mm | 0.189 | 4.8 |
| #12 | 0.189 | 4.8006 |
| #11 | 0.191 | 4.8514 |
| 4.9 mm | 0.1929 | 4.9 |
| #10 | 0.1935 | 4.9149 |
| #9 | 0.196 | 4.9784 |
| 5 mm | 0.1969 | 5 |
| #8 | 0.199 | 5.0546 |
| 5.1 mm | 0.2008 | 5.1 |