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ASME B18.9 No. 3 Head Plow Bolts Round, Countersunk, Square Neck
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Dimensions of of No. 3 Head Plow Bolts (Round, Countersunk, Square Neck) (Inch) |
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Nominal or Basic Bolt Diameter, D [Note (1)] |
Diameter of Full-Size Body, E |
Diameter of Head, A |
Maximum Feed Thickness,F |
Depth of Square and Head, S |
Width of Square, B |
Across Corners |
Maximum Radius on Corners of Square, R [Note (2)] |
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Max. |
Min. |
Max. |
Min. Sharp |
ABS Min. With Flat |
Max. |
Min.(Basic) |
Max. |
Min.(Basic) |
Min. |
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Regular Head |
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5/16 |
0.3125 |
0.312 |
0.299 |
0.605 |
0.578 |
0.538 |
0.04 |
0.269 |
0.228 |
0.176 |
0.313 |
0.417 |
0.031 |
3/8 |
0.375 |
0.375 |
0.36 |
0.708 |
0.671 |
0.624 |
0.05 |
0.312 |
0.262 |
0.206 |
0.375 |
0.491 |
0.047 |
7/16 |
0.4375 |
0.438 |
0.421 |
0.826 |
0.781 |
0.729 |
0.058 |
0.364 |
0.306 |
0.235 |
0.438 |
0.58 |
0.047 |
1/2 |
0.5 |
0.5 |
0.483 |
0.945 |
0.89 |
0.831 |
0.068 |
0.417 |
0.349 |
0.265 |
0.5 |
0.668 |
0.047 |
9/16 |
0.5625 |
0.592 |
0.544 |
1.045 |
1 |
0.924 |
0.072 |
0.461 |
0.389 |
0.305 |
0.563 |
0.732 |
0.078 |
5/8 |
0.625 |
0.657 |
0.606 |
1.147 |
1.094 |
1.013 |
0.08 |
0.506 |
0.426 |
0.33 |
0.625 |
0.891 |
0.078 |
3/4 |
0.75 |
0.782 |
0.729 |
1.303 |
1.25 |
1.169 |
0.08 |
0.541 |
0.461 |
0.338 |
0.75 |
0.996 |
0.078 |
7/8 |
0.875 |
0.938 |
0.853 |
1.512 |
1.469 |
1.344 |
0.1 |
0.626 |
0.526 |
0.384 |
0.875 |
1.16 |
0.094 |
1 |
1 |
1.062 |
0.976 |
1.7 |
1.656 |
1.532 |
0.1 |
0.69 |
0.59 |
0.422 |
1 |
1.336 |
0.094 |
Repaire Head |
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5/16 |
0.3125 |
0.312 |
0.299 |
0.556 |
0.531 |
0.496 |
0.32 |
0.232 |
0.2 |
0.139 |
0.313 |
0.417 |
0.031 |
3/8 |
0.375 |
0.375 |
0.36 |
0.659 |
0.624 |
0.584 |
0.04 |
0.272 |
0.232 |
0.166 |
0.375 |
0.491 |
0.047 |
7/16 |
0.4375 |
0.438 |
0.421 |
0.779 |
0.734 |
0.689 |
0.048 |
0.324 |
0.276 |
0.195 |
0.438 |
0.58 |
0.047 |
1/2 |
0.5 |
0.5 |
0.483 |
0.898 |
0.843 |
0.793 |
0.056 |
0.375 |
0.319 |
0.223 |
0.5 |
0.668 |
0.047 |
9/16 |
0.5625 |
0.592 |
0.544 |
1.002 |
0.953 |
0.882 |
0.064 |
0.423 |
0.359 |
0.267 |
0.563 |
0.732 |
0.078 |
5/8 |
0.625 |
0.657 |
0.606 |
1.096 |
1.047 |
0.976 |
0.064 |
0.458 |
0.394 |
0.282 |
0.625 |
0.819 |
0.078 |
3/4 |
0.75 |
0.782 |
0.729 |
1.252 |
1.203 |
1.132 |
0.064 |
0.493 |
0.429 |
0.29 |
0.75 |
0.996 |
0.078 |
7/8 |
0.875 |
0.938 |
0.853 |
1.465 |
1.422 |
1.309 |
0.08 |
0.573 |
0.493 |
0.331 |
0.875 |
1.16 |
0.094 |
1 |
1 |
1.062 |
0.976 |
1.653 |
1.609 |
1.497 |
0.08 |
0.637 |
0.557 |
0.369 |
1 |
1.336 |
0.094 |
GENERAL NOTE: For additional requirements, refer to section 2.
NOTES:
(1) Where specif ying the nominal size in decimals, zeros preceding the decimal and in the four th decimal place shall be omitted.
(2) This size is not recommended.
(3) The letter “R” shall be shown on top of the repair head to distinguish it from the regular head bolt.
NOTES:
(1) Where specif ying the nominal size in decimals, zeros preceding the decimal and in the four th decimal place shall be omitted.
(2) This size is not recommended.
(3) The letter “R” shall be shown on top of the repair head to distinguish it from the regular head bolt.
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