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Machine screws are typically designed with finer, more accurate threads than alternative fastener types. They are generally intended for use with a pre-drilled interior tapped hole or a nut. Machine screws are most often used for fastening metal parts securely together in various types of machinery ......

Coarse drywall screws feature coarse threads to secure drywall boards to studs. Fine drywall screws feature smaller heads and are used to secure drywall to metal studs. Self-drilling screws and pan-head screws can be used with metal studs or frames.

Self tapping screws, also known as quick tooth screws, are steel quick fit fasteners that have been galvanized and passivated on the surface. Self tapping screws are commonly used for connecting thin metal plates (steel plates, saw plates, etc.). When connecting, first make a threaded bottom hole fo......

Pan Philip Head Machine Screw Zinc Plated are designed for a variety of applications,such as fixing metal to metal and fixing metal to wood.

Flat Philip Head Machine Screw Zinc Plated is convenient to use.It has a flat tip that functions as a drill bit. The thread is different from the above two types,and generally is metric coarse thread.Suitable for field operation, high-altitude operation, etc.

Rust remover can be sprayed on the rusted screw. When the rust remover reacts with the rusted screw, it will not rust after washing with water.