|
45° Countersunk Head
Also called Flat 45° Countersunk Head Imperial Sizes
|
Large Solid Rivets for General Engineering Purposes - Not Boiler Rivets
|
BS 275 : 1927 plate 2, Fig 9 Flat 45° Countersunk Head
½ to 1¾ Inches Diameter - All Dimensions in Inches - Generally Mild Steel
|
- - - Shank Diameter - - - |
Head Diameter |
Head Depth |
Setting |
Nominal D |
& |
Tolerance |
A=1.5D |
B=0.604D |
Allowance S=0.352D |
1/2 |
0.500 |
0.484 / 0.531 |
0.750 |
0.302 |
0.176 |
9/16 |
0.563 |
0.547 / 0.594 |
0.844 |
0.340 |
0.198 |
5/8 |
0.625 |
0.609 / 0.656 |
0.938 |
0.378 |
0.220 |
11/16 |
0.688 |
0.672 / 0.719 |
1.031 |
0.415 |
0.242 |
3/4 |
0.750 |
0.734 / 0.781 |
1.125 |
0.453 |
0.264 |
13/16 |
0.813 |
0.797 / 0.844 |
1.219 |
0.491 |
0.286 |
7/8 |
0.875 |
0.859 / 0.906 |
1.313 |
0.529 |
0.308 |
15/16 |
0.938 |
0.922 / 0.969 |
1.406 |
0.566 |
0.330 |
1 |
1.000 |
0.984 / 1.031 |
1.500 |
0.604 |
0.352 |
1.1/16 |
1.063 |
1.047 / 1.094 |
1.594 |
0.642 |
0.374 |
1.1/8 |
1.125 |
1.109 / 1.156 |
1.688 |
0.680 |
0.396 |
1.3/16 |
1.188 |
1.172 / 1.219 |
1.781 |
0.717 |
0.418 |
1.1/4 |
1.250 |
1.234 / 1.281 |
1.875 |
0.755 |
0.440 |
1.5/16 |
1.313 |
1.297 / 1.344 |
1.969 |
0.793 |
0.462 |
1.3/8 |
1.375 |
1.359 / 1.406 |
2.063 |
0.831 |
0.484 |
1.7/16 |
1.438 |
1.422 / 1.469 |
2.156 |
0.868 |
0.506 |
1.1/2 |
1.500 |
1.484 / 1.531 |
2.250 |
0.906 |
0.528 |
1.9/16 |
1.563 |
1.547 / 1.594 |
2.344 |
0.944 |
0.550 |
1.5/8 |
1.625 |
1.609 / 1.656 |
2.438 |
0.982 |
0.572 |
1.11/16 |
1.688 |
1.672 / 1.719 |
2.531 |
1.019 |
0.594 |
1.3/4 |
1.750 |
1.734 / 1.781 |
2.625 |
1.057 |
0.616 |
The Britsh Standard does not specify tolerances for Head Diameter, Depth, & Angle of Countersink or Shank Length. It is normal to have a radius under the head and at the periphery of the countersink, but no dimensions are specified.
|
|
|