A325

A325

STRUCTURAL BOLT

A325 and A490 *Dimensions and Tolerances

Grip Determination
Bolt Size Inches To Determine Required Bolt Length Add to Grip Inches
12 1116
58 78
34 1
78 1 18
1 1 14
1 18 1 12
1 14 1 58
1 38 1 34
1 12 1 78

Also Available In Hot Dipped Galvanized

A325 Dimensions

Bolt Diameter Bolt Diameter Width Across Flats Width Across Corners Height Thread Length
Max Basic Max Min Max Min Basic Max Min Basic
1/2 0.515 78 0.875 0.850 1.010 0.969 516 0.323 0.302 1.00
5/8 0.642 1/116 1.062 1.031 1.227 1.175 2564 0.403 0.378 1.25
3/4 0.768 1/14 1.250 1.212 1.443 1.383 1532 0.483 0.455 1.38
7/8 0.895 1/716 1.438 1.394 1.660 1.589 3564 0.563 0.531 1.50
1 1.022 1/58 1.625 1.575 1.876 1.796 3964 0.627 0.591 1.75
1/18 1.149 1/1316 1.812 1.756 2.093 2.002 1116 0.718 0.658 2.00
1/14 1.277 2 2.00 1.938 2.309 2.209 2532 0.813 0.749 2.00
1/38 1.404 2/316 2.188 2.119 2.526 2.416 2732 0.878 0.810 2.25
1/12 1.531 2/38 2.375 2.300 2.742 2.622 1516 0.974 0.902 2.25