B5/8-11 x 1 MS90728, Alloy Steel B1821 Coarse Cap Screw Per ASTM A354BD Zinc Yellow DFAR 1-1/8-7 They have a black oxide

They have a black oxide and oil finish

The 1/4-20 x 5/8 Phillips Indented Hex Washer Machine Screw Fully Threaded Zinc is a versatile fastener designed for secure and durable connections in various applications

while the DFAR EcoGuard USA coating ensures corrosion resistance and environmental compliance

They are made of steel and have a zinc coating for corrosion resistance

They have a full body thread that provides maximum holding power

B5/8-11 x 1 MS90728, Alloy Steel B1821 Coarse Cap Screw Per ASTM A354BD Zinc Yellow DFAR 1-1/8-7 They have a black oxideB5 8 11 x 1 MS90728 is a Coarse Cap Screw made of Alloy Steel B1821, meeting the specifications of ASTM A354BD. It has a diameter of 5 8 inches, a length of 1 inch, and a thread pitch of 11 threads per inch. The screw is zinc plated yellow and complies with the Defense Federal Acquisition Regulation Supplement (DFARS). It is designed for general purpose fastening applications in various industries.