Roll Fast is a manufacturer, supplier, and exporter of ASTM A 449 bolts and nuts in India. These are intended for general engineering use. It is a medium-strength bolt manufactured from heat-treated medium carbon or alloy steel. Its strength is in the middle of low and high and is manufactured from carbon steel or alloy steel raw material which can suffice its requirements. ASTM A449 covers quenched and tempered steel hex cap screws, threaded rods, headed bolts, studs, and anchor bolts having a minimum tensile strength and diameters ranging from ¼ inch to 3 inches inclusive. It is intended for general engineering applications. However, the A449 is more flexible since it covers a larger diameter range and is not restricted by a specific configuration.
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