B1/2-13 x 2 3/4 MS90728, Alloy Steel B1821 Coarse Cap Screw Per ASTM A354BD Zinc Yellow DFAR KWN The 5/16-18 x 1 Coarse

The 5/16-18 x 1 Coarse Thread Socket Set Screw Cup Plain is a cylindrical fastener with a hexagonal head and a threaded socket in the center

and the 2/3 thread allows for easy penetration and withdrawal

- Phillips drive

They are made of steel and have a zinc coating to protect them from corrosion

The screw is made of steel and has a bright nickel finish for corrosion resistance

B1/2-13 x 2 3/4 MS90728, Alloy Steel B1821 Coarse Cap Screw Per ASTM A354BD Zinc Yellow DFAR KWN The 5/16-18 x 1 CoarseB1 2 13 x 2 3 4 MS90728 is a coarse thread cap screw made of alloy steel B1821 and meets the specifications of ASTM A354BD. It has a diameter of 1 2 inch, a length of 2 3 4 inches, and a zinc yellow finish. The screw is designed for use in high strength applications and is compliant with the Defense Federal Acquisition Regulation Supplement (DFARS). It is commonly used in aerospace, automotive, and industrial settings.