China heavy hex manufacturers ASTM A490 METRIC HEAVY HEX BOLTS ITEM: STANDARD SPECIFICATION FOR HIGH-STRENGTH STEEL BOLTS,CLASSES 10.9 , FOR STRUCTURAL STEEL JOINTS [METRIC] MATERIAL: MEDIUM CARBON ALLOY STEEL DIMENSION: ASME B18.2.3.7M HEAVY HEX STRUCTURAL BOLTS FINISHING: BLACK HOT DIP GALVANIZED Structural Bolts are a specialized heavy type of hex bolt intended for use in large structures, such as buildings and bridges. This bolt is designed to withstand the loads of steel-to-steel structural connections.
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