high strength self-threading pin dry wall nail black cross countersunk head carpentry screw gypsum board screw (half tapping)

This high-strength self-tapping screw is specially designed for woodworking, gypsum board, and various thin plate installations. It features a unique "semi-tapping" thread design—the end without threads can lead to positioning, and the sharp thread at the front can quickly penetrate, effectively preventing material cracking and slipping. The black surface with a cross-head is flat and beautiful after installation, and it is convenient to operate. Its high hardness and good toughness ensure that it can form a firm connection in gypsum board, wood, and metal ribs. This product supports flexible customization in size and material, meeting the specific needs of length, strength, and corrosion resistance in different engineering scenarios. It is directly supplied by the factory, with reliable quality, and is the preferred fastener for ceiling and partition walls, furniture assembly, and decoration projects.