Large Solid Imperial Boiler Rivets

BS 425 : 1943   Fig 8   Rounded 60° Countersunk Head Type 1
½ to 2 Inches Diameter - All Dimensions in Inches - Mild Steel

- - - Shank Diameter - - -

Head Diameter 

Head Depth

Depth of 

Setting

  Nominal
  D

&
 

Tolerance
 

 
   A=1.5D

 
B=0.433D

Round
C=0.201D

Allowance
S=0.484D

1/2

0.500

0.484 / 0.516

0.750

0.217

0.101

0.242

17/32

0.531

0.516 / 0.547

0.797

0.230

0.107

0.257

9/16

0.563

0.547 / 0.578

0.844

0.244

0.113

0.272

19/32

0.594

0.578 / 0.609

0.891

0.257

0.119

0.287

5/8

0.625

0.609 / 0.641

0.938

0.271

0.126

0.303

21/32

0.656

0.641 / 0.672

0.984

0.284

0.132

0.318

11/16

0.688

0.672 / 0.703

1.031

0.298

0.138

0.333

23/32

0.719

0.703 / 0.734

1.078

0.311

0.144

0.348

3/4

0.750

0.734 / 0.766

1.125

0.325

0.151

0.363

13/16

0.813

0.797 / 0.828

1.219

0.352

0.163

0.393

7/8

0.875

0.859 / 0.891

1.313

0.379

0.176

0.424

15/16

0.938

0.922 / 0.953

1.406

0.406

0.188

0.454

1

1.000

0.984 / 1.016

1.500

0.433

0.201

0.484

1.1/8

1.125

1.109 / 1.156

1.688

0.487

0.226

0.545

1.1/4

1.250

1.234 / 1.281

1.875

0.541

0.251

0.605

1.3/8

1.375

1.359 / 1.406

2.063

0.595

0.276

0.666

1.1/2

1.500

1.484 / 1.531

2.250

0.650

0.302

0.726

1.5/8

1.625

1.609 / 1.656

2.438

0.704

0.327

0.787

1.3/4

1.750

1.734 / 1.781

2.625

0.758

0.352

0.847

1.7/8

1.875

1.859 / 1.906

2.813

0.812

0.377

0.908

2

2.000

1.984 / 2.031

3.000

0.866

0.402

0.968