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ASME B18.9 TABLE 1 Standard Dimensions for Plow bolts, inch series

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Plow bolts (round, countersunk, square neck) 

Dimensional Drawing and Technical Diagrams

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Key Dimensions and Technical Parameters

Dimensions in inches (1 inch=25.4 mm) sourceASME B18.9 table 1
Publication date: 2007
d Thread size
 E max E min
A max
A min
 F max S max
S min
B max
 B min
Regular head
5/16
 0.312 0.299 0.605 0.578 0.025 0.269 0.243 0.325 0.313
3/8
 0.375 0.36 0.708 0.671 0.031 0.312 0.281 0.387 0.375
7/16
 0.438 0.421 0.826 0.781 0.036 0.364 0.328 0.450 0.438
1/2
 0.5 0.483 0.945 0.89 0.042 0.417 0.375 0.515 0.5
9/16
 0.592 0.544 1.045 1 0.045 0.461 0.416 0.578 0.563
5/8
 0.657 0.06 1.147 1.09 0.050 0.506 0.456 0.64 0.625
3/4
 0.782 0.729 1.303 1.25 0.050 0.541 0.491 0.765 0.75
7/8
 0.938 0.853 1.512 1.47 0.063 0.626 0.563 0.906 0.875
1 1.062 0.976 1.700 1.656 0.063 0.69 0.627 1.031 1
Repair head
5/16
 0.312 0.299 0.556 0.531 0.020 0.232 0.212 0.325 0.313
3/8
 0.375 0.36 0.659 0.624 0.025 0.272 0.247 0.387 0.375
7/16
 0.438 0.421 0.779 0.734 0.030 0.324 0.294 0.450 0.438
1/2
 0.5 0.483 0.898 0.843 0.035 0.375 0.34 0.515 0.5
9/16 0.592 0.544 0.1002 0.953 0.040 0.423 0.383 0.578 0.563
5/8 0.657 0.06 1.096 1.047 0.040 0.458 0.418 0.64 0.625
3/4 0.782 0.729 1.252 1.203 0.040 0.493 0.453 0.765 0.75
7/8 0.938 0.853 1.465 1.422 0.050 0.573 0.523 0.906 0.875
1 1.062 0.956 1.653 1.609 0.050 0.637 0.587 1.031 1

Reproduced by permission of DIN Deutsches Institut für Normung e. V. The definitive version for the implementation of this standard is the edition bearing the most recent date of issue, obtainable from Beuth Verlag GmbH, Burggrafenstraße 6, 10787 Berlin, Germany.
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