Material:  C1022 
Main Feature: bugle head, Phillips drive, coarse/fine threadFinished: phosphate (black, grey), galvanized (color, white, blue)Size: all different sizes such as 3.5*13mm, 3.5*19mm, and so on.
Packaging:1000pcs/box,12/26boxes/carton or as requiredUsage: widely used in wood furniture, construction ,sheet iron,hard wood and light steel joist so on