Large Solid Imperial Boiler Rivets

BS 425 : 1943   Fig 10   Rounded 60° Countersunk Head Type 2
½ to 2 Inches Diameter - All Dimensions in Inches - Mild Steel

- - - Shank Diameter - - -

Head Diameter 

Head Depth

Depth of 

Setting

  Nominal
  D

&
 

Tolerance
 

 
   A=1.577D

 
B=0.5D

Round
C=0.385D

Allowance
S=0.862D

1/2

0.500

0.484 / 0.516

0.789

0.250

0.193

0.431

17/32

0.531

0.516 / 0.547

0.838

0.266

0.205

0.458

9/16

0.563

0.547 / 0.578

0.887

0.281

0.217

0.485

19/32

0.594

0.578 / 0.609

0.936

0.297

0.229

0.512

5/8

0.625

0.609 / 0.641

0.986

0.313

0.241

0.539

21/32

0.656

0.641 / 0.672

1.035

0.328

0.253

0.566

11/16

0.688

0.672 / 0.703

1.084

0.344

0.265

0.593

23/32

0.719

0.703 / 0.734

1.133

0.359

0.277

0.620

3/4

0.750

0.734 / 0.766

1.183

0.375

0.289

0.647

13/16

0.813

0.797 / 0.828

1.281

0.406

0.313

0.700

7/8

0.875

0.859 / 0.891

1.380

0.438

0.337

0.754

15/16

0.938

0.922 / 0.953

1.478

0.469

0.361

0.808

1

1.000

0.984 / 1.016

1.577

0.500

0.385

0.862

1.1/8

1.125

1.109 / 1.156

1.774

0.563

0.433

0.970

1.1/4

1.250

1.234 / 1.281

1.971

0.625

0.481

1.078

1.3/8

1.375

1.359 / 1.406

2.168

0.688

0.529

1.185

1.1/2

1.500

1.484 / 1.531

2.366

0.750

0.578

1.293

1.5/8

1.625

1.609 / 1.656

2.563

0.813

0.626

1.401

1.3/4

1.750

1.734 / 1.781

2.760

0.875

0.674

1.509

1.7/8

1.875

1.859 / 1.906

2.957

0.938

0.722

1.616

2

2.000

1.984 / 2.031

3.154

1.000

0.770

1.724