Screws Type:Thread Size: 6#32x5mm ,Black Oxide Finish, UNC，Phillips Drive Pan Head, Fully Threaded. | High Quality :Made of high quality carbon steel with a zinc-plated surface,It is known as dependable and rigid strength as well as its corrosion resistant quality. This type of steel is able to withstand drastic weather and temperature changes ， These qualities ensure hard-wearing making these screws and nuts virtually indestructible. | Applications:It fits for fastening and mounting 3.5" Hard Drive hot swap caddy tray | Package:These computer screws comes in a plastic storage case for organization and portability. | Package include:100pcs silver color and 100pcs black color hard disk screws ,enough quantity for your home repairing work.