Large Solid Imperial Boiler Rivets

BS 425 : 1943   Fig 11   Countersunk Shallow Snap Head
½ to 2 Inches Diameter - All Dimensions in Inches - Mild Steel

- - - Shank Diameter - - -

Depth of 

Head Diameter 

Head Depth

Setting

  Nominal
  D

&
 

Tolerance
 

 60° Fillet
 E=0.250D

 
   A=1.6D

 
B=0.45D

Allowance
S=0.792D

1/2

0.500

0.484 / 0.516

0.125

0.800

0.225

0.396

17/32

0.531

0.516 / 0.547

0.133

0.850

0.239

0.421

9/16

0.563

0.547 / 0.578

0.141

0.900

0.253

0.446

19/32

0.594

0.578 / 0.609

0.148

0.950

0.267

0.470

5/8

0.625

0.609 / 0.641

0.156

1.000

0.281

0.495

21/32

0.656

0.641 / 0.672

0.164

1.050

0.295

0.520

11/16

0.688

0.672 / 0.703

0.172

1.100

0.309

0.545

23/32

0.719

0.703 / 0.734

0.180

1.150

0.323

0.569

3/4

0.750

0.734 / 0.766

0.188

1.200

0.338

0.594

13/16

0.813

0.797 / 0.828

0.203

1.300

0.366

0.644

7/8

0.875

0.859 / 0.891

0.219

1.400

0.394

0.693

15/16

0.938

0.922 / 0.953

0.234

1.500

0.422

0.743

1

1.000

0.984 / 1.016

0.250

1.600

0.450

0.792

1.1/8

1.125

1.109 / 1.156

0.281

1.800

0.506

0.891

1.1/4

1.250

1.234 / 1.281

0.313

2.000

0.563

0.990

1.3/8

1.375

1.359 / 1.406

0.344

2.200

0.619

1.089

1.1/2

1.500

1.484 / 1.531

0.375

2.400

0.675

1.188

1.5/8

1.625

1.609 / 1.656

0.406

2.600

0.731

1.287

1.3/4

1.750

1.734 / 1.781

0.438

2.800

0.788

1.386

1.7/8

1.875

1.859 / 1.906

0.469

3.000

0.844

1.485

2

2.000

1.984 / 2.031

0.500

3.200

0.900

1.584