2 1/2 Non-Serrated Flange Screw

Frame Bolts are hex washer head bolts with a flat washer bearing surface. They are made from high-alloy steel, and commonly used on truck frames, hence the name frame bolt. The flange eliminates the need for washers. They are covered under ASME Standard B18.2.1

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CIFILFlange Screw w/o serr. (Frame Bolt)Grade 5Plain2 1/2-4 x 9hex m/b 4 1/2 shank to first scratch of thread body diameter to measure 2.495/2.4932

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