Machinery's Handbook Pocket Companion

DOWEL PINS

Table 9: American National Standard Hardened Ground Machine Dowel Pins ANSI B18.8.2-1978, R1989

Nominal Size [a] or Nominal Pin Diameter

Pin Diameter, A

Point Diameter, B

Crown Height or Radius, C

Range of Preferred Lengths, [b] L

Double Shear Load, Min. lb for Carbon or Alloy Steel

Suggested Hole Diameter [c]

Standard Series Pins

Oversize Series Pins

Basic

Max

Min

Basic

Max

Min

Max

Min

Max

Min

Max

Min

0.0625

0.0627

0.0628

0.0626

0.0635

0.0636

0.0634

0.058

0.048

0.020

0.008

800

0.0625

0.0620

0.0781

0.0783

0.0784

0.0782

0.0791

0.0792

0.0790

0.074

0.064

0.026

0.010

1240

0.0781

0.0776

0.0938

0.0940

0.0941

0.0939

0.0948

0.0949

0.0947

0.089

0.079

0.031

0.012

1800

0.0937

0.0932

?

0.1250

0.1252

0.1253

0.1251

0.1260

0.1261

0.1259

0.120

0.110

0.041

0.016

? 2

3200

0.1250

0.1245

0.1562

0.1564

0.1565

0.1563

0.1572

0.1573

0.1571

0.150

0.140

0.052

0.020

5000

0.1562

0.1557

0.1875

0.1877

0.1878

0.1876

0.1885

0.1886

0.1884

0.180

0.170

0.062

0.023

2

7200

0.1875

0.1870

0.2500

0.2502

0.2503

0.2501

0.2510

0.2511

0.2509

0.240

0.230

0.083

0.031

2

12,800

0.2500

0.2495

0.3125

0.3127

0.3128

0.3126

0.3135

0.3136

0.3134

0.302

0.290

0.104

0.039

2

20,000

0.3125

0.3120

?

0.3750

0.3752

0.3753

0.3751

0.3760

0.3761

0.3759

0.365

0.350

0.125

0.047

3

28,700

0.3750

0.3745

0.4375

0.4377

0.4378

0.4376

0.4385

0.4386

0.4384

0.424

0.409

0.146

0.055

? 3

39,100

0.4375

0.4370

0.5000

0.5002

0.5003

0.5001

0.5010

0.5011

0.5009

0.486

0.471

0.167

0.063

, 1 4

51,000

0.5000

0.4995

?

0.6250

0.6252

0.6253

0.6251

0.6260

0.6261

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