1
DRILL SELECTION CHART METRIC | FRACTIONS | GAUGE | INCHES www.sterlingtools.com.au METRIC FRACTION GAUGE INCH 0.3 0.0118 0.32 0.0126 0.343 80 0.0135 0.35 0.0138 0.368 79 0.0145 0.38 0.015 0.397 1/64" 0.0156 0.4 0.0157 0.406 78 0.016 0.42 0.0165 0.45 0.0177 0.457 77 0.018 0.48 0.0189 0.5 0.0197 0.508 76 0.02 0.52 0.0205 0.533 75 0.021 0.55 0.0217 0.572 74 0.0225 0.58 0.0228 0.6 0.0236 0.61 73 0.024 0.62 0.0244 0.635 72 0.025 0.65 0.0256 0.66 71 0.026 0.68 0.0268 0.7 0.0276 0.711 70 0.028 0.72 0.0283 0.742 69 0.0292 0.75 0.0295 0.78 0.0307 0.787 68 0.031 0.794 1/32" 0.0312 0.8 0.0315 0.813 67 0.032 0.82 0.0323 0.838 66 0.033 0.85 0.0335 0.88 0.0346 0.889 65 0.035 0.9 0.0354 0.914 64 0.036 0.92 0.0362 0.94 63 0.037 0.95 0.0374 0.965 62 0.038 0.98 0.0386 0.99 61 0.039 1 0.0394 1.016 60 0.04 1.041 59 0.041 1.05 0.0413 1.067 58 0.042 1.092 57 0.043 1.1 0.0433 1.15 0.0453 1.181 56 0.0465 1.191 3/64" 0.0469 1.2 0.0472 1.25 0.0492 1.3 0.0512 1.321 55 0.052 1.35 0.0531 1.397 54 0.055 1.4 0.0551 1.45 0.0571 1.5 0.0591 1.511 53 0.0595 1.55 0.061 1.588 1/16" 0.0625 1.6 0.063 1.613 52 0.0635 1.65 0.065 1.7 0.0669 1.702 51 0.067 1.75 0.0689 1.778 50 0.07 1.8 0.0709 1.85 0.0728 1.854 49 0.073 METRIC FRACTION GAUGE INCH 1.9 0.0748 1.93 48 0.076 1.95 0.0768 1.984 5/64" 0.0781 1.994 47 0.0785 2 0.0787 2.05 0.0807 2.057 46 0.081 2.083 45 0.082 2.1 0.0827 2.15 0.0846 2.184 44 0.086 2.2 0.0866 2.25 0.0886 2.61 43 0.089 2.3 0.0906 2.35 0.0925 2.375 42 0.0935 2.381 3/32" 0.0938 2.4 0.0945 2.438 41 0.096 2.45 0.0965 2.489 40 0.098 2.5 0.0984 2.527 39 0.0995 2.55 0.1004 2.578 38 0.1015 2.6 0.1024 2.642 37 0.104 2.65 0.1043 2.7 0.1063 2.705 36 0.1065 2.75 0.1083 2.778 7/64" 0.1094 2.294 35 0.11 2.8 0.1102 2.819 34 0.111 2.85 0.1122 2.87 33 0.113 2.9 0.1142 2.946 32 0.116 2.95 0.1161 3 0.1181 3.048 31 0.12 3.1 0.122 3.1755 1/8" 0.125 3.2 0.126 3.25 0.128 3.264 30 0.1285 3.3 0.1299 3.4 0.1339 3.454 29 0.136 3.5 0.1378 3.569 28 0.1405 3.572 9/64" 0.1406 3.6 0.1417 3.658 27 0.144 3.7 0.1457 3.734 26 0.147 3.75 0.1476 3.797 25 0.1495 3.8 0.1496 3.861 24 0.152 3.9 0.1535 3.912 23 0.154 3.969 5/32" 0.1562 3.988 22 0.157 4 0.1575 4.039 21 0.159 4.089 20 0.161 4.1 0.1614 4.2 0.1654 4.216 19 0.166 4.25 0.1673 4.3 0.1693 4.305 18 0.1695 4.366 11/64" 0.1719 4.394 17 0.173 4.4 0.1732 4.496 16 0.177 4.5 0.1772 4.572 15 0.18 METRIC FRACTION GAUGE INCH 4.6 0.1811 4.623 14 0.182 4.7 13 0.185 4.75 0.187 4.762 3/16" 0.1875 4.8 12 0.189 4.851 11 0.191 4.9 0.1929 4.915 10 0.1935 4.978 9 0.196 5 0.1969 5.055 8 0.199 5.1 0.2008 5.105 7 0.201 5.159 13/64" 0.2031 5.182 6 0.204 5.2 0.2047 5.22 5 0.2055 5.25 0.2067 5.3 0.2087 5.309 4 0.209 5.4 0.2126 5.41 3 0.213 5.5 0.2165 5.556 7/32" 0.2188 5.6 0.2205 5.613 2 0.221 5.7 0.2244 5.75 0.2264 5.791 1 0.228 5.8 0.2283 5.9 0.2323 5.944 A 0.234 5.953 15/64" 0.2344 6 0.2362 6.045 B 0.238 6.1 0.2402 6.147 C 0.242 6.2 0.2441 6.248 D 0.246 6.25 0.2461 6.3 0.248 6.35 1/4" E 0.25 6.4 0.252 6.5 0.2559 6.528 F 0.257 6.6 0.2598 6.629 G 0.261 6.7 0.2638 6.747 17/64" 0.2656 6.75 0.2657 6.75 H 0.266 6.8 0.2677 6.9 0.2717 6.909 I 0.272 7 0.2756 7.036 J 0.277 7.1 0.2795 7.137 K 0.281 7.144 9/32" 0.2812 7.2 0.2835 7.25 0.2854 7.3 0.2874 7.366 L 0.29 7.4 0.2913 7.493 M 0.295 7.5 0.2953 7.541 19/64" 0.2969 7.6 0.2992 7.671 N 0.302 7.7 0.3031 7.75 0.3051 7.8 0.3071 7.9 0.311 7.938 5/16" 0.3125 8 0.315 8.026 O 0.316 8.1 0.3189 8.2 0.3228 8.204 P 0.323 8.25 0.3248 8.3 0.3268 METRIC FRACTION GAUGE INCH 8.334 21/64" 0.3281 8.4 0.3307 8.433 Q 0.332 8.5 0.3346 8.6 0.3386 8.611 R 0.339 8.7 0.3425 8.731 11/32" 0.3438 8.75 0.3445 8.8 0.3465 8.839 S 0.348 8.9 0.3504 9 0.3543 9.093 T 0.358 9.1 0.3583 9.128 23/64" 0.3594 9.2 0.3622 9.25 0.3642 9.3 0.3661 9.347 U 0.368 9.4 0.3701 9.5 0.374 9.525 3/8" 0.375 9.576 V 0.377 9.6 0.378 9.7 0.3819 9.75 0.3839 9.8 0.3858 9.804 W 0.386 9.9 0.3898 9.922 25/64" 0.3906 10 0.3937 10.084 X 0.397 10.1 0.3976 10.2 0.4016 10.25 0.4035 10.262 Y 0.404 10.3 0.4055 10.319 13/32" 0.4062 10.4 0.4094 10.49 Z 0.413 10.5 0.4134 10.6 0.4173 10.7 0.4213 10.716 27/64" 0.4219 10.75 0.4232 10.8 0.4252 10.9 0.4291 11 0.4331 11.1 0.437 11.112 7/16" 0.4375 11.2 0.4409 11.25 0.4429 11.3 0.4449 11.4 0.4488 11.5 0.4528 11.509 29/64" 0.4531 11.6 0.4567 11.7 0.4606 11.75 0.4626 11.8 0.4646 11.9 0.4685 11.906 15/32" 0.4688 12 0.4724 12.1 0.4764 12.2 0.4803 12.25 0.4823 12.3 0.4843 12.303 31/64" 0.4844 12.4 0.4882 12.5 0.4921 12.6 0.4961 12.7 1/2" 0.5 12.75 0.502 12.8 0.5039 12.9 0.5079 13 0.5118 13.097 33/64" 0.5156 13.1 0.5157 13.2 0.5197 13.25 0.5217 13.3 0.5236 METRIC FRACTION GAUGE INCH 13.4 0.5276 13.494 17/32" 0.5313 13.5 1.5315 13.6 1.5354 13.7 0.5394 13.75 0.5413 13.8 0.5433 13.891 35/64" 0.5469 13.9 0.5472 14 0.5512 14.25 0.561 14.288 9/16" 0.5625 14.5 0.5709 14.684 37/64" 0.5781 14.75 0.5807 15 0.5906 15.081 19/32" 0.5937 15.25 0.6004 15.478 39/64" 0.6094 15.5 0.6102 15.75 0.6201 15.875 5/8" 0.625 16 0.6299 16.25 0.6398 16.272 41/64" 0.6406 16.5 0.6496 16.669 21/32" 0.6563 16.75 0.6594 17 0.6693 17.066 43/64" 0.6719 17.25 0.6791 17.462 11/16" 0.6875 17.5 0.689 17.75 0.6988 17.859 45/64" 0.7031 18 0.7087 18.25 0.7185 18.256 23/32" 0.7187 18.5 0.7283 18.653 47/64" 0.7344 18.75 0.7382 19 0.748 19.05 3/4" 0.75 19.25 0.7579 19.447 49/64" 0.7656 19.5 0.7677 19.75 0.7776 19.844 25/32" 0.7813 20 0.7874 20.241 51/64" 0.7969 20.25 0.7972 20.5 0.8071 20.638 13/16" 0.8125 20.75 0.8169 21 0.8268 21.034 53/64" 0.8281 21.25 0.8366 21.431 27/32" 0.8437 21.5 0.8465 21.75 0.8563 21.828 55/64" 0.8594 22 0.8661 22.225 7/8" 0.875 22.25 0.876 22.5 0.8858 22.622 57/64" 0.8906 22.75 0.8957 23 0.9055 23.019 29/32" 0.9063 23.25 0.9154 23.416 59/64" 0.9219 23.5 0.9252 23.75 0.935 23.812 15/16" 0.9375 24 0.9449 24.209 61/64" 0.9531 24.25 0.9547 24.5 0.9646 24.606 31/32" 0.9687 24.75 0.9744 25 0.9843 25.003 63/64" 0.9844 METRIC FRACTION GAUGE INCH 25.25 0.9941 25.4 1" 1 25.5 1.0039 25.75 1.0138 25.797 1-1/64" 1.0156 26 1.0236 26.194 1-1/32" 1.0313 26.25 1.0335 26.5 1.0433 26.591 1-3/64" 1.0469 26.75 1.0531 26.988 1-1/16" 1.0625 27 1.063 27.25 1.0728 27.384 1-5/64" 1.0781 27.5 1.0827 27.75 1.0925 27.781 1-3/32" 1.0937 28 1.1024 28.178 1-7/64" 1.1094 28.25 1.1122 28.5 1.122 28.575 1-1/8" 1.125 28.75 1.1319 28.972 1-9/64" 1.1406 29 1.1417 29.25 1.1516 29.369 1-5/32" 1.1563 29.5 1.1614 29.75 1.1713 29.766 1-11/64" 1.1719 30 1.1811 30.162 1-3/16" 1.1875 30.25 1.1909 30.5 1.2008 30.559 1-13/64" 1.2031 30.75 1.2106 30.956 1-7/32" 1.2187 31 1.2205 31.25 1.2303 31.353 1-15/64" 1.2344 31.5 1.2402 31.75 1-1/4" 1.25 32 1.2598 32.147 1-17/64" 1.2656 32.5 1.2795 32.544 1-9/32" 1.2813 32.941 1-19/64" 1.2969 33 1.2992 33.338 1-5/16" 1.3125 33.5 1.3189 33.734 1-21/64" 1.3281 34 1.3386 34.131 1-11/32" 1.3437 34.5 1.3583 34.528 1-23/64" 1.3594 34.925 1-3/8" 1.375 35 1.378 35.322 1-25/64" 1.3906 35.5 1.3976 35.719 1-13/32" 1.4063 36 1.4173 36.116 1-27/64" 1.4219 36.5 1.437 36.512 1-7/16" 1.4375 36.909 1-29/64" 1.4531 37 1.4567 37.306 1-15/32" 1.4687 37.5 1.4764 37.703 1-31/64" 1.4844 38 1.4961 38.1 1-1/2" 1.5 38.497 1-33/64" 1.5156 38.5 1.5157 38.894 1-17/32" 1.5313 39 1.5354 39.291 1-35/64" 1.5496 39.5 1.5551 39.688 1-9/16" 1.5625 40 1.5748 40.084 1-37/64" 1.5781 40.481 1-19/32" 1.5937 40.5 1.5945 40.878 1-39/64" 1.6094 DISTRIBUTED BY: 135° SPLIT POINT CUTS FASTER AND REDUCES WANDERING FULLY GROUND M2 HSS INCREASES DRILL LIFE TITANIUM NITRIDE COATING REDUCES HEAT AND INCREASES LUBRICITY FOR EXTENDED LIFE * *30% more holes than other leading brands of jobber drills. Independent testing results available.

DISTRIBUTED BY: DRILL SELECTION CHART...26 1.0236 26.194 1-1/32" 1.0313 26.25 1.0335 26.5 1.0433 26.591 1-3/64" 1.0469 26.75 1.0531 26.988 1-1/16" 1.0625 27 1.063 27.25 1.0728 27.384

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Page 1: DISTRIBUTED BY: DRILL SELECTION CHART...26 1.0236 26.194 1-1/32" 1.0313 26.25 1.0335 26.5 1.0433 26.591 1-3/64" 1.0469 26.75 1.0531 26.988 1-1/16" 1.0625 27 1.063 27.25 1.0728 27.384

DRILL SELECTION CHARTMETRIC | FRACTIONS | GAUGE | INCHES

www.sterlingtools.com.au

METRIC FRACTION GAUGE INCH0.3 0.01180.32 0.01260.343 80 0.01350.35 0.01380.368 79 0.01450.38 0.0150.397 1/64" 0.01560.4 0.01570.406 78 0.0160.42 0.01650.45 0.01770.457 77 0.0180.48 0.01890.5 0.01970.508 76 0.020.52 0.02050.533 75 0.0210.55 0.02170.572 74 0.02250.58 0.02280.6 0.02360.61 73 0.0240.62 0.02440.635 72 0.0250.65 0.02560.66 71 0.0260.68 0.02680.7 0.02760.711 70 0.0280.72 0.02830.742 69 0.02920.75 0.02950.78 0.03070.787 68 0.0310.794 1/32" 0.03120.8 0.03150.813 67 0.0320.82 0.03230.838 66 0.0330.85 0.03350.88 0.03460.889 65 0.0350.9 0.03540.914 64 0.0360.92 0.03620.94 63 0.0370.95 0.03740.965 62 0.0380.98 0.03860.99 61 0.0391 0.03941.016 60 0.041.041 59 0.0411.05 0.04131.067 58 0.0421.092 57 0.0431.1 0.04331.15 0.04531.181 56 0.04651.191 3/64" 0.04691.2 0.04721.25 0.04921.3 0.05121.321 55 0.0521.35 0.05311.397 54 0.0551.4 0.05511.45 0.05711.5 0.05911.511 53 0.05951.55 0.0611.588 1/16" 0.06251.6 0.0631.613 52 0.06351.65 0.0651.7 0.06691.702 51 0.0671.75 0.06891.778 50 0.071.8 0.07091.85 0.07281.854 49 0.073

METRIC FRACTION GAUGE INCH1.9 0.07481.93 48 0.0761.95 0.07681.984 5/64" 0.07811.994 47 0.07852 0.07872.05 0.08072.057 46 0.0812.083 45 0.0822.1 0.08272.15 0.08462.184 44 0.0862.2 0.08662.25 0.08862.61 43 0.0892.3 0.09062.35 0.09252.375 42 0.09352.381 3/32" 0.09382.4 0.09452.438 41 0.0962.45 0.09652.489 40 0.0982.5 0.09842.527 39 0.09952.55 0.10042.578 38 0.10152.6 0.10242.642 37 0.1042.65 0.10432.7 0.10632.705 36 0.10652.75 0.10832.778 7/64" 0.10942.294 35 0.112.8 0.11022.819 34 0.1112.85 0.11222.87 33 0.1132.9 0.11422.946 32 0.1162.95 0.11613 0.11813.048 31 0.123.1 0.1223.1755 1/8" 0.1253.2 0.1263.25 0.1283.264 30 0.12853.3 0.12993.4 0.13393.454 29 0.1363.5 0.13783.569 28 0.14053.572 9/64" 0.14063.6 0.14173.658 27 0.1443.7 0.14573.734 26 0.1473.75 0.14763.797 25 0.14953.8 0.14963.861 24 0.1523.9 0.15353.912 23 0.1543.969 5/32" 0.15623.988 22 0.1574 0.15754.039 21 0.1594.089 20 0.1614.1 0.16144.2 0.16544.216 19 0.1664.25 0.16734.3 0.16934.305 18 0.16954.366 11/64" 0.17194.394 17 0.1734.4 0.17324.496 16 0.1774.5 0.17724.572 15 0.18

METRIC FRACTION GAUGE INCH4.6 0.18114.623 14 0.1824.7 13 0.1854.75 0.1874.762 3/16" 0.18754.8 12 0.1894.851 11 0.1914.9 0.19294.915 10 0.19354.978 9 0.1965 0.19695.055 8 0.1995.1 0.20085.105 7 0.2015.159 13/64" 0.20315.182 6 0.2045.2 0.20475.22 5 0.20555.25 0.20675.3 0.20875.309 4 0.2095.4 0.21265.41 3 0.2135.5 0.21655.556 7/32" 0.21885.6 0.22055.613 2 0.2215.7 0.22445.75 0.22645.791 1 0.2285.8 0.22835.9 0.23235.944 A 0.2345.953 15/64" 0.23446 0.23626.045 B 0.2386.1 0.24026.147 C 0.2426.2 0.24416.248 D 0.2466.25 0.24616.3 0.2486.35 1/4" E 0.256.4 0.2526.5 0.25596.528 F 0.2576.6 0.25986.629 G 0.2616.7 0.26386.747 17/64" 0.26566.75 0.26576.75 H 0.2666.8 0.26776.9 0.27176.909 I 0.2727 0.27567.036 J 0.2777.1 0.27957.137 K 0.2817.144 9/32" 0.28127.2 0.28357.25 0.28547.3 0.28747.366 L 0.297.4 0.29137.493 M 0.2957.5 0.29537.541 19/64" 0.29697.6 0.29927.671 N 0.3027.7 0.30317.75 0.30517.8 0.30717.9 0.3117.938 5/16" 0.31258 0.3158.026 O 0.3168.1 0.31898.2 0.32288.204 P 0.3238.25 0.32488.3 0.3268

METRIC FRACTION GAUGE INCH8.334 21/64" 0.32818.4 0.33078.433 Q 0.3328.5 0.33468.6 0.33868.611 R 0.3398.7 0.34258.731 11/32" 0.34388.75 0.34458.8 0.34658.839 S 0.3488.9 0.35049 0.35439.093 T 0.3589.1 0.35839.128 23/64" 0.35949.2 0.36229.25 0.36429.3 0.36619.347 U 0.3689.4 0.37019.5 0.3749.525 3/8" 0.3759.576 V 0.3779.6 0.3789.7 0.38199.75 0.38399.8 0.38589.804 W 0.3869.9 0.38989.922 25/64" 0.390610 0.393710.084 X 0.39710.1 0.397610.2 0.401610.25 0.403510.262 Y 0.40410.3 0.405510.319 13/32" 0.406210.4 0.409410.49 Z 0.41310.5 0.413410.6 0.417310.7 0.421310.716 27/64" 0.421910.75 0.423210.8 0.425210.9 0.429111 0.433111.1 0.43711.112 7/16" 0.437511.2 0.440911.25 0.442911.3 0.444911.4 0.448811.5 0.452811.509 29/64" 0.453111.6 0.456711.7 0.460611.75 0.462611.8 0.464611.9 0.468511.906 15/32" 0.468812 0.472412.1 0.476412.2 0.480312.25 0.482312.3 0.484312.303 31/64" 0.484412.4 0.488212.5 0.492112.6 0.496112.7 1/2" 0.512.75 0.50212.8 0.503912.9 0.507913 0.511813.097 33/64" 0.515613.1 0.515713.2 0.519713.25 0.521713.3 0.5236

METRIC FRACTION GAUGE INCH13.4 0.527613.494 17/32" 0.531313.5 1.531513.6 1.535413.7 0.539413.75 0.541313.8 0.543313.891 35/64" 0.546913.9 0.547214 0.551214.25 0.56114.288 9/16" 0.562514.5 0.570914.684 37/64" 0.578114.75 0.580715 0.590615.081 19/32" 0.593715.25 0.600415.478 39/64" 0.609415.5 0.610215.75 0.620115.875 5/8" 0.62516 0.629916.25 0.639816.272 41/64" 0.640616.5 0.649616.669 21/32" 0.656316.75 0.659417 0.669317.066 43/64" 0.671917.25 0.679117.462 11/16" 0.687517.5 0.68917.75 0.698817.859 45/64" 0.703118 0.708718.25 0.718518.256 23/32" 0.718718.5 0.728318.653 47/64" 0.734418.75 0.738219 0.74819.05 3/4" 0.7519.25 0.757919.447 49/64" 0.765619.5 0.767719.75 0.777619.844 25/32" 0.781320 0.787420.241 51/64" 0.796920.25 0.797220.5 0.807120.638 13/16" 0.8125

20.75 0.8169

21 0.826821.034 53/64" 0.828121.25 0.836621.431 27/32" 0.843721.5 0.846521.75 0.856321.828 55/64" 0.859422 0.866122.225 7/8" 0.87522.25 0.87622.5 0.885822.622 57/64" 0.890622.75 0.895723 0.905523.019 29/32" 0.906323.25 0.915423.416 59/64" 0.921923.5 0.925223.75 0.93523.812 15/16" 0.937524 0.944924.209 61/64" 0.953124.25 0.954724.5 0.964624.606 31/32" 0.968724.75 0.974425 0.984325.003 63/64" 0.9844

METRIC FRACTION GAUGE INCH25.25 0.994125.4 1" 125.5 1.003925.75 1.013825.797 1-1/64" 1.015626 1.023626.194 1-1/32" 1.031326.25 1.033526.5 1.043326.591 1-3/64" 1.046926.75 1.053126.988 1-1/16" 1.062527 1.06327.25 1.072827.384 1-5/64" 1.078127.5 1.082727.75 1.092527.781 1-3/32" 1.093728 1.102428.178 1-7/64" 1.109428.25 1.112228.5 1.12228.575 1-1/8" 1.12528.75 1.131928.972 1-9/64" 1.140629 1.141729.25 1.151629.369 1-5/32" 1.156329.5 1.161429.75 1.171329.766 1-11/64" 1.171930 1.181130.162 1-3/16" 1.187530.25 1.190930.5 1.200830.559 1-13/64" 1.203130.75 1.210630.956 1-7/32" 1.218731 1.220531.25 1.230331.353 1-15/64" 1.234431.5 1.240231.75 1-1/4" 1.2532 1.259832.147 1-17/64" 1.265632.5 1.279532.544 1-9/32" 1.281332.941 1-19/64" 1.296933 1.299233.338 1-5/16" 1.312533.5 1.318933.734 1-21/64" 1.328134 1.338634.131 1-11/32" 1.343734.5 1.358334.528 1-23/64" 1.359434.925 1-3/8" 1.37535 1.37835.322 1-25/64" 1.390635.5 1.397635.719 1-13/32" 1.406336 1.417336.116 1-27/64" 1.421936.5 1.43736.512 1-7/16" 1.437536.909 1-29/64" 1.453137 1.456737.306 1-15/32" 1.468737.5 1.476437.703 1-31/64" 1.484438 1.496138.1 1-1/2" 1.538.497 1-33/64" 1.515638.5 1.515738.894 1-17/32" 1.531339 1.535439.291 1-35/64" 1.549639.5 1.555139.688 1-9/16" 1.562540 1.574840.084 1-37/64" 1.578140.481 1-19/32" 1.593740.5 1.594540.878 1-39/64" 1.6094

DISTRIBUTED BY:

135° SPLIT POINT CUTS FASTER AND

REDUCES WANDERING

FULLY GROUND M2 HSS INCREASES DRILL LIFE

TITANIUM NITRIDE COATING REDUCES HEAT AND INCREASES LUBRICITY FOR EXTENDED LIFE

*

*30% more holes than other leading brands of jobber drills. Independent testing results available.

20141111_DRILL_SELECTION_CHART.indd 1 14/11/2014 1:55 pm