5/16 x 1/2 Brass Machine Screw Flat Countersunk Head Phillips Drive - (Pack of 100 pcs), Solid Brass Plain Finish, Length: 1/2 inches, Thread Size: 5/16"-18, Coarse Thread UNC

Brass is a non-corrosive metal | A countersunk head with a flat top surface and a cone-shaped bearing surface with a head angle of approximately 82 degrees | Brass is a soft metal and can easily be warped or misshapen if it handled improperly. | Used in applications where protrusion of the fastener above the mating surface is unacceptable. U