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A325 is an ASTM International standard for heavy hex structural bolts, titled Standard Specification forStructural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength.
SIZES
3/16-24T |
1/4-20T |
5/16-18T |
3/8-16T |
7/16-14T |
1/2-13T UP TO 1-1/4-7T |
M4-0.7P |
M5-0.8P |
M6-1.0P |
M8-1.25P |
M10-1.5P UP TO M36-4.0P |