Structural Bolts Import And Domestic Available
The International standard for heavy hex structural bolts is ASTM A325. Heavy hex structural bolts are designed and used for steel-to-steel structural connections. Structural bolts are tightened to near their proof strength to allow significant bolt tension. They are typically short and have a thicker and wider head for a more effective distribution of the load.
ASTM A325 structural bolts are quenched and temper heat-treated to exceed the minimum tensile strength required. A325 structural bolts are typically supplied as plain, mechanical or hot-dipped, and made from weathering steel materials such as medium carbon alloy steel with copper, chromium and nickel components. A325 structural bolts are produced to the dimensions of high-strength heavy hex structural bolts from 1/2" diameter through 1-1/2" diameter. These bolts are intended for use in structural connections and therefore have shorter thread lengths than standard hex bolts