B5/8-18 x 3 1/2 MS90727, Alloy Steel B1821 Fine Cap Screw Per ASTM A354BD Zinc Yellow DFAR 0-80 Whether you're working on a

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B5/8-18 x 3 1/2 MS90727, Alloy Steel B1821 Fine Cap Screw Per ASTM A354BD Zinc Yellow DFAR 0-80 Whether you're working on aThe B5 8 18 x 3 1 2 MS90727 is an alloy steel B1821 fine cap screw that conforms to the specifications of ASTM A354BD. It has a diameter of 5 8 inches, a length of 3 1 2 inches, and a thread pitch of 18 threads per inch. The screw is zinc plated with a yellow chromate finish and is compliant with the Defense Federal Acquisition Regulation Supplement (DFARS). It is commonly used in aerospace and other demanding applications where high strength and