B1-8 x 4 3/4 MS90728, Alloy Steel B1821 Coarse Cap Screw Per ASTM A354BD Zinc Yellow DFAR RTU188 This 1/4-20 x 3 1/2"

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B1-8 x 4 3/4 MS90728, Alloy Steel B1821 Coarse Cap Screw Per ASTM A354BD Zinc Yellow DFAR RTU188 This 1/4-20 x 3 1/2"B1 8 x 4 3 4 MS90728 is an alloy steel B1821 coarse cap screw that conforms to the specifications of ASTM A354BD. It has a diameter of 1 8 inch and a length of 4 3 4 inches. The screw is zinc plated yellow and is compliant with the Defense Federal Acquisition Regulation Supplement (DFARS). It is commonly used in a variety of industrial and construction applications where high strength and corrosion resistance are required.