EngMechRef web client

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Standard Drill Sizes

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Drillinchmm

.

800.01350.343

.

790.01450.368

.

1/640.01560.396

.

780.01600.406

.

770.01800.457

.

760.02000.508

.

750.02100.533

.

740.02250.572

.

730.02400.610

.

720.02500.635

.

710.02600.660

.

700.02800.711

.

690.02920.742

.

680.03100.787

.

1/320.03130.795

.

670.03200.813

.

660.03300.838

.

650.03500.889

.

640.03600.914

.

630.03700.940

.

620.03800.965

.

610.03900.991

.

600.04001.016

.

590.04101.041

.

580.04201.067

.

570.04301.092

.

560.04651.181

.

3/640.04691.191

.

550.05201.321

.

540.05501.397

.

530.05951.511

.

1/160.06251.588

.

520.06351.613

.

510.06701.702

.

500.07001.778

.

490.07301.854

.

480.07601.930

.

5/640.07811.984

.

470.07851.994

.

460.08102.057

.

450.08202.083

.

440.08602.184

.

430.08902.261

.

420.09352.375

.

3/320.09382.383

.

410.09602.438

.

400.09802.489

.

390.09952.527

.

380.10152.578

.

370.10402.642

.

360.10652.705

.

7/640.10942.779

.

350.11002.794

.

340.11102.819

.

330.11302.870

.

320.11602.946

.

310.12003.048

.

1/80.12503.175

.

300.12853.264

.

290.13603.454

.

280.14053.569

.

9/640.14063.571

.

270.14403.658

.

260.14703.734

.

250.14953.797

.

240.15203.861

.

230.15403.912

.

5/320.15623.967

.

220.15703.988

.

210.15904.039

.

200.16104.089

.

190.16604.216

.

180.16954.305

.

11/640.17194.366

.

170.17304.394

.

160.17704.496

.

150.18004.572

.

140.18204.623

.

130.18504.699

.

3/160.18754.763

.

120.18904.801

.

110.19104.851

.

100.19354.915

.

90.19604.978

.

80.19905.055

.

70.20105.105

.

13/640.20315.159

.

60.20405.182

.

50.20555.220

.

40.20905.309

.

30.21305.410

.

7/320.21885.558

.

20.22105.613

.

10.22805.791

.

A0.23405.944

.

15/640.23445.954

.

B0.23806.045

.

C0.24206.147

.

D0.24606.248

.

E0.25006.350

.

1/40.25006.350

.

F0.25706.528

.

G0.26106.629

.

17/640.26566.746

.

H0.26606.756

.

I0.27206.909

.

J0.27707.036

.

K0.28107.137

.

9/320.28127.142

.

L0.29007.366

.

M0.29507.493

.

19/640.29697.541

.

N0.30207.671

.

5/160.31257.938

.

O0.31608.026

.

P0.32308.204

.

21/640.32818.334

.

Q0.33208.433

.

R0.33908.611

.

11/320.34388.733

.

S0.34808.839

.

T0.35809.093

.

23/640.35949.129

.

U0.36809.347

.

3/80.37509.525

.

V0.37709.576

.

W0.38609.804

.

25/640.39069.921

.

X0.397010.084

.

Y0.404010.262

.

13/320.406210.317

.

Z0.413010.490

.

27/640.421910.716

.

7/160.437511.113

.

29/640.453111.509

.

15/320.468811.908

.

31/640.484412.304

.

1/20.500012.700

.

33/640.515613.096

.

17/320.531313.495

.

35/640.546913.891

.

9/160.562514.288

.

37/640.578114.684

.

19/320.593815.083

.

39/640.609415.479

.

5/80.625015.875

.

41/640.640616.271

.

21/320.656216.667

.

43/640.671917.066

.

11/160.687517.463

.

45/640.703117.859

.

23/320.718818.258

.

47/640.734418.654

.

3/40.750019.050

.

49/640.765619.446

.

25/320.781219.842

.

51/640.796920.241

.

13/160.812520.638

.

53/640.828121.034

.

27/320.843821.433

.

55/640.859421.829

.

7/80.875022.225

.

57/640.890622.621

.

29/320.906223.017

.

59/640.921923.416

.

15/160.937523.813

.

61/640.953124.209

.

31/320.968824.608

.

63/640.984425.004

.

11.000025.400

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