Set Screw, Steel, Finish Black Oxide, Thread Size M3 x 0.50mm, Point Type Dog, Point Material Steel, Drive Type Hex Socket, Drive Size 1.5 mm, Overall Length 4 mm, Temp. Range (F) -58 Degrees to 302 Degrees , Rockwell Hardness HRC45 to HRC53, Meets D915, Package Quantity 100