1/4-20 x 1 Phillips Pan Machine Screw Fully Threaded Black Zinc NWRP75 while the 8 refers to

while the 8 refers to its length in inches

They are made of hardened steel with a green ceramic coating that provides excellent corrosion resistance

The 5/8-11 x 1 1/2 Hex Cap Screw Grade 8 Yellow Zinc is a high-strength fastener designed for demanding applications

The non-serrated design ensures a smooth surface for easy insertion and removal

1/4-20 x 1 Phillips Pan Machine Screw Fully Threaded Black Zinc NWRP75 while the 8 refers toThis 1 4 20 x 1 Phillips pan machine screw is fully threaded and coated in black zinc for corrosion resistance. It has a Phillips drive, which requires a Phillips screwdriver to install or remove. This screw is commonly used in a variety of applications, including machinery, appliances, and furniture. It is made of steel for strength and durability.