ASTM A193 Grade B8M Heavy Hexagon Nuts

ASTM A193 Grade B8M Heavy Hexagon nuts 

Heavy hex nuts are slightly larger and thicker than standard nuts (H=D, so the height of the nut = the diameter of the bolt).   Quenched & tempered carbon-molybdenum heavy hex nuts

ASTM A193 Grade B8M Heavy Hexagon Nuts

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