Engineer's Data Charts

A selection of charts useful to engineers.

Drill Chart


inchesFractionGaugeMetricmm
0.0004 0.010.010
0.0019 107 0.048
0.0020 0.050.050
0.0023 106 0.058
0.0027 105 0.069
0.0031 104 0.079
0.0035 103 0.089
0.0039 102 0.099
0.0039 0.100.100
0.0043 101 0.109
0.0047 100 0.119
0.0051 99 0.130
0.0055 98 0.140
0.0059 97 0.150
0.0059 0.150.150
0.0063 96 0.160
0.0067 95 0.170
0.0071 94 0.180
0.0075 93 0.191
0.0079 0.200.200
0.0079 92 0.201
0.0083 91 0.211
0.0087 90 0.221
0.0091 89 0.231
0.0095 88 0.241
0.0098 0.250.250
0.0100 87 0.254
0.0105 86 0.267
0.0110 85 0.279
0.0115 84 0.292
0.0118 0.300.300
0.0120 83 0.305
0.0125 82 0.318
0.0130 81 0.330
0.0135 80 0.343
0.0145 79 0.368
0.01561/64 0.397
0.0157 0.400.400
0.0160 78 0.406
0.0180 77 0.457
0.0197 0.500.500
0.0200 76 0.508
0.0210 75 0.533
0.0225 74 0.572
0.0236 0.600.600
0.0240 73 0.610
0.0250 72 0.635
0.0260 71 0.660
0.0276 0.700.700
0.0280 70 0.711
inchesFractionGaugeMetricmm
0.0292 69 0.742
0.0310 68 0.787
0.03121/32 0.794
0.0315 0.800.800
0.0320 67 0.813
0.0330 66 0.838
0.0350 65 0.889
0.0354 0.900.900
0.0360 64 0.914
0.0370 63 0.940
0.0380 62 0.965
0.0390 61 0.991
0.0394 1.001.000
0.0400 60 1.016
0.0410 59 1.041
0.0430 57 1.092
0.0433 1.101.100
0.0465 56 1.181
0.04693/64 1.191
0.0472 1.201.200
0.0512 1.301.300
0.0520 55 1.321
0.0550 54 1.397
0.0551 1.401.400
0.0591 1.501.500
0.0595 53 1.511
0.06251/16 1.588
0.0630 1.601.600
0.0635 52 1.613
0.0669 1.701.700
0.0670 51 1.702
0.0700 50 1.778
0.0709 1.801.800
0.0730 49 1.854
0.0748 1.901.900
0.0760 48 1.930
0.07815/64 1.984
0.0785 47 1.994
0.0787 2.002.000
0.0810 46 2.057
0.0827 2.102.100
0.0860 44 2.184
0.0866 2.202.200
0.0890 43 2.261
0.0906 2.302.300
0.0935 42 2.375
0.09383/32 2.381
0.0945 2.402.400
0.0960 41 2.438
0.0980 40 2.489
inchesFractionGaugeMetricmm
0.0984 2.502.500
0.0995 39 2.527
0.1015 38 2.578
0.1024 2.602.600
0.1040 37 2.642
0.1063 2.702.700
0.1065 36 2.705
0.10947/64 2.778
0.1100 35 2.794
0.1102 2.802.800
0.1110 34 2.819
0.1130 33 2.870
0.1142 2.902.900
0.1160 32 2.946
0.1181 3.003.000
0.1200 31 3.048
0.12501/8 3.175
0.1260 3.203.200
0.1285 30 3.264
0.1299 3.303.300
0.1339 3.403.400
0.1360 29 3.454
0.1378 3.503.500
0.1405 28 3.569
0.14069/64 3.572
0.1417 3.603.600
0.1440 27 3.658
0.1457 3.703.700
0.1470 26 3.734
0.1495 25 3.797
0.1496 3.803.800
0.1520 24 3.861
0.1535 3.903.900
0.1540 23 3.912
0.15625/32 3.969
0.1570 22 3.988
0.1575 4.004.000
0.1590 21 4.039
0.1610 20 4.089
0.1614 4.104.100
0.1654 4.204.200
0.1660 19 4.216
0.1693 4.304.300
0.1695 18 4.305
0.171911/64 4.366
0.1730 17 4.394
0.1732 4.404.400
0.1770 16 4.496
0.1772 4.504.500
0.1800 15 4.572
inchesFractionGaugeMetricmm
0.1811 4.604.600
0.1820 14 4.623
0.1850 134.704.700
0.18753/16 4.762
0.1890 124.804.800
0.1910 11 4.851
0.1929 4.904.900
0.1935 10 4.915
0.1960 9 4.978
0.1969 5.005.000
0.1990 8 5.055
0.2008 5.105.100
0.2010 7 5.105
0.203113/64 5.159
0.2040 6 5.182
0.2047 5.205.200
0.2055 5 5.220
0.2087 5.305.300
0.2090 4 5.309
0.2126 5.405.400
0.2130 3 5.410
0.2165 5.505.500
0.21887/32 5.556
0.2205 5.605.600
0.2210 2 5.613
0.2244 5.705.700
0.2264 5.750
0.2280 1 5.791
0.2283 5.805.800
0.2323 5.905.900
0.2340 A 5.944
0.234415/64 5.953
0.2362 6.006.000
0.2380 B 6.045
0.2402 6.106.100
0.2420 C 6.147
0.2441 6.206.200
0.2460 D 6.248
0.2461 6.256.250
0.2480 6.306.300
0.25001/4E 6.350
0.2520 6.406.400
0.2559 6.506.500
0.2570 F 6.528
0.2598 6.606.600
0.2610 G 6.629
0.2638 6.706.700
0.265617/64 6.747
0.2660 H 6.756
0.2677 6.806.800
inchesFractionGaugeMetricmm
0.2717 6.906.900
0.2720 I 6.909
0.2756 7.007.000
0.2770 J 7.036
0.2795 7.107.100
0.2810 K 7.137
0.28129/32 7.144
0.2835 7.207.200
0.2874 7.307.300
0.2900 L 7.366
0.2913 7.407.400
0.2950 M 7.493
0.2953 7.507.500
0.296919/64 7.541
0.2992 7.607.600
0.3020 N 7.671
0.3031 7.707.700
0.3071 7.807.800
0.3110 7.907.900
0.31255/16 7.938
0.3150 8.008.000
0.3160 O 8.026
0.3189 8.108.100
0.3228 8.208.200
0.3230 P 8.204
0.3268 8.308.300
0.328121/64 8.334
0.3307 8.408.400
0.3320 Q 8.433
0.3346 8.508.500
0.3386 8.608.600
0.3390 R 8.611
0.3425 8.708.700
0.343811/32 8.731
0.3465 8.808.800
0.3480 S 8.839
0.3504 8.908.900
0.3543 9.009.000
0.3580 T 9.093
0.3583 9.109.100
0.359423/64 9.128
0.3622 9.209.200
0.3661 9.309.300
0.3680 U 9.347
0.3701 9.409.400
0.3740 9.509.500
0.37503/8 9.525
0.3770 V 9.576
0.3780 9.609.600
0.3819 9.709.700
inchesFractionGaugeMetricmm
0.3858 9.809.800
0.3860 W 9.804
0.3898 9.909.900
0.390625/64 9.922
0.3937 10.0010.000
0.3970 X 10.084
0.3976 10.1010.100
0.4016 10.2010.200
0.4040 Y 10.262
0.4055 10.3010.300
0.406213/32 10.319
0.4094 10.4010.400
0.4130 Z 10.490
0.4134 10.5010.500
0.4173 10.6010.600
0.4213 10.7010.700
0.421927/64 10.716
0.4252 10.8010.800
0.4291 10.9010.900
0.4331 11.0011.000
0.4370 11.1011.100
0.43757/16 11.112
0.4409 11.2011.200
0.4449 11.3011.300
0.4488 11.4011.400
0.4528 11.5011.500
0.453129/64 11.509
0.4567 11.6011.600
0.4606 11.7011.700
0.4646 11.8011.800
0.4685 11.9011.900
0.468815/32 11.906
0.4724 12.0012.000
0.4764 12.1012.100
0.4803 12.2012.200
0.4843 12.3012.300
0.484431/64 12.303
0.4882 12.4012.400
0.4921 12.5012.500
0.4691 12.6012.600
0.50001/2 12.700
0.5039 12.8012.800
0.5079 12.9012.900
0.5118 13.0013.000
0.515633/64 13.097
0.5157 13.1013.100
0.5197 13.2013.200
0.5236 13.3013.300
0.5276 13.4013.400
0.531217/32 13.494
inchesFractionGaugeMetricmm
0.5315 13.5013.500
0.5354 13.6013.600
0.5394 13.7013.700
0.5433 13.8013.800
0.546935/64 13.891
0.5472 1MT13.9013.900
0.5512 2MT14.0014.000
0.56259/16 14.288
0.5709 14.5014.500
0.578137/64 14.684
0.5906 15.0015.000
0.593819/32 15.081
0.609439/64 15.478
0.6102 15.5015.500
0.6201 15.7515.750
0.62505/8 15.875
0.6299 16.0016.000
0.6398 16.2516.250
0.640641/64 16.272
0.6496 16.5016.500
0.6594 16.7516.750
0.656221/32 16.669
0.6693 17.0017.000
0.671943/64 17.066
0.6791 17.2517.250
0.687511/16 17.462
0.6890 17.5017.500
0.6988 17.7517.750
0.703145/64 17.859
0.7087 18.0018.000
0.7185 18.2518.250
0.718823/32 18.256
0.7283 18.5018.500
0.734447/64 18.653
0.7382 18.7518.750
0.7480 19.0019.000
0.75003/4 19.050
0.7579 19.2519.250
0.765649/64 19.447
0.7677 19.5019.500
0.7776 19.7519.750
0.781225/32 19.844
0.7874 20.0020.000
0.796951/64 20.241
0.7972 20.2520.250
0.8071 20.5020.500
0.812513/16 20.638
0.8169 20.7520.750
0.8268 21.0021.000
0.828153/64 21.034
inchesFractionGaugeMetricmm
0.8366 21.2521.250
0.843827/32 21.431
0.8465 21.5021.500
0.8563 21.7521.750
0.859455/64 21.828
0.8661 22.0022.000
0.87507/8 22.225
0.8760 22.2522.250
0.8858 22.5022.500
0.890657/64 22.622
0.8957 22.7522.750
0.9055 23.0023.000
0.906229/322MT 23.019
0.9154 3MT23.2523.250
0.921959/64 23.416
0.9252 23.5023.500
0.9350 23.7523.750
0.937515/16 23.812
0.9449 24.0024.000
0.953161/64 24.209
0.9547 24.2524.250
0.9646 24.5024.500
0.968831/32 24.606
0.9744 24.7524.750
0.9843 25.0025.000
0.984463/64 25.003
0.9941 25.2525.250
1.00001 25.400
1.0039 25.5025.500
1.0138 25.7525.750
1.01561 1/64 25.797
1.0236 26.0026.000
1.03121 1/32 26.194
1.0335 26.2526.250
1.0433 26.5026.500
1.04691 3/64 26.591
1.0531 26.7526.750
1.06251 1/16 26.988
1.0630 27.0027.000
1.0728 27.2527.250
1.07811 5/64 27.384
1.0827 27.5027.500
1.0925 27.7527.750
1.09381 3/32 27.781
1.1024 28.0028.000
1.10941 7/64 28.178
1.1122 28.2528.250
1.1220 28.5028.500
1.12501 1/8 28.575
1.1319 28.7528.750
inchesFractionGaugeMetricmm
1.14061 9/64 28.972
1.1417 29.0029.000
1.1516 29.2529.250
1.15621 5/32 29.369
1.1614 29.5029.500
1.1713 29.7529.750
1.17191 11/64 29.766
1.1811 30.0030.000
1.18751 3/16 30.162
1.1909 30.2530.250
1.2008 30.5030.500
1.20311 13/64 30.559
1.2106 30.7530.750
1.21881 7/32 30.956
1.2205 31.0031.000
1.2303 31.2531.250
1.23441 15/64 31.353
1.2402 31.5031.500
1.25001 1/43MT31.7531.750
1.2598 4MT32.0032.000
1.26561 17/64 32.147
1.2795 32.5032.500
1.28131 9/32 32.544
1.29691 19/64 32.941
1.2992 33.0033.000
1.31251 5/16 33.338
1.3189 33.5033.500
1.32811 21/64 33.734
1.3386 34.0034.000
1.34381 11/32 34.131
1.3583 34.5034.500
1.35941 23/64 34.528
1.37501 3/8 34.925
1.3780 35.0035.000
1.39061 25/64 35.322
1.3976 35.5035.500
1.40631 13/32 35.719
1.4173 36.0036.000
1.42191 27/64 36.116
1.4370 36.5036.500
1.43751 7/16 36.513
1.45311 29/64 36.909
1.4567 37.0037.000
1.46881 15/32 37.306
1.4764 37.5037.500
1.48441 31/64 37.703
1.4961 38.0038.000
1.50001 1/2 38.100