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Bolts

Plow Bolt

Dimensions of Head Plow Bolts (Round, Countersunk, Square Neck)

D E A F S B R
Nominal Size or Basic Bolt Diameter Diameter of Full-Size Body Diameter of Head Feed Thickness Depth of Square and Head Width of Square Radius on Corners of Square Max
Max Min Max Min Sharp Abs Min With Flat Max Max Min Max Min Basic
REGULAR HEAD
5/16 0.3125 0.312 0.299 0.605 0.578 0.563 0.025 0.269 0.243 0.325 0.313 0.031
3/8 0.3750 0.375 0.360 0.708 0.671 0.656 0.031 0.312 0.281 0.387 0.375 0.047
7/16 0.4375 0.438 0.421 0.826 0.781 0.766 0.036 0.364 0.328 0.450 0.438 0.047
1/2 0.5000 0.500 0.483 0.945 0.890 0.875 0.042 0.417 0.375 0.515 0.500 0.047
9/16 0.5625 0.592 0.544 1.045 1.000 0.969 0.045 0.461 0.416 0.578 0.563 0.078
5/8 0.6250 0.657 0.606 1.147 1.094 1.063 0.050 0.506 0.456 0.640 0.625 0.078
3/4 0.7500 0.782 0.729 1.303 1.250 1.219 0.050 0.541 0.491 0.765 0.750 0.078
7/8 0.8750 0.938 0.853 1.512 1.469 1.406 0.063 0.626 0.563 0.906 0.875 0.094
1 1.0000 1.062 0.976 1.700 1.656 1.594 0.063 0.690 0.627 1.031 1.000 0.094
REPAIR HEAD
5/16 0.3125 0.312 0.299 0.556 0.531 0.516 0.020 0.232 0.212 0.325 0.313 0.031
3/8 0.3750 0.375 0.360 0.659 0.624 0.609 0.025 0.272 0.247 0.387 0.375 0.047
7/16 0.4375 0.438 0.421 0.779 0.734 0.719 0.030 0.324 0.294 0.450 0.438 0.047
1/2 0.5000 0.500 0.483 0.898 0.843 0.828 0.035 0.375 0.340 0.515 0.500 0.047
9/16 0.5625 0.592 0.544 1.002 0.953 0.922 0.040 0.423 0.383 0.578 0.563 0.078
5/8 0.6250 0.657 0.606 1.096 1.047 1.016 0.040 0.458 0.418 0.640 0.625 0.078
3/4 0.7500 0.782 0.729 1.252 1.203 1.172 0.040 0.493 0.453 0.765 0.750 0.078
7/8 0.8750 0.938 0.853 1.465 1.422 1.359 0.050 0.573 0.523 0.906 0.875 0.094
1 1.0000 1.062 0.976 1.653 1.609 1.547 0.050 0.637 0.587 1.031 1.000 0.094