B1/4-20 x 5/8 MS90728, Alloy Steel B1821 Coarse Cap Screw Per ASTM A354BD Zinc Yellow DFAR 0-80x1/4 These 8-18 x 1 1/4"

These 8-18 x 1 1/4" square drive flat head fully threaded self-drilling screws are made of 18-8 stainless steel

The hex washer head provides a wide bearing surface for increased torque and prevents overtightening

which means that it can be tightened or loosened using a square-shaped screwdriver

6-19 x 1 #5 HD Phillips Pan High Low Screw Fully Threaded Zinc

These 6-13 x 5/8-inch square drive pan deep thread wood screws are full thread and have a black oxide finish

B1/4-20 x 5/8 MS90728, Alloy Steel B1821 Coarse Cap Screw Per ASTM A354BD Zinc Yellow DFAR 0-80x1/4 These 8-18 x 1 1/4"B1 4 20 x 5 8 MS90728 is an Alloy Steel B1821 Coarse Cap Screw manufactured according to ASTM A354BD standards. It has a diameter of 1 4 inch, a length of 5 8 inch, and a UNC thread type with 20 threads per inch. The screw is zinc plated with a yellow chromate finish and meets DFAR requirements. It is commonly used in industrial and automotive applications where high strength and corrosion resistance are required.