A general purpose bolt complete with square nut, ideal for fastening roofing, guttering and many other applications.Zinc plated for durabilityThe flat underside of the head distributes the load across
Zinc plated for durability
The flat underside of the head distributes the load across the fixing to improve the effectiveness
The screw is a tool that uses the physics and mathematics of the oblique circular rotation of the object and the friction force to gradually tighten the objects and parts. Screws are a common term for fasteners, an everyday spoken word. Screws are indispensable industrial necessities in daily life: extremely small screws used in cameras, glasses, clocks, electronics, etc.; general screws used in televisions, electrical products, musical instruments, furniture, etc.; as for engineering, construction, and bridges, large-scale screws are used. Screws and nuts; transportation equipment, airplanes, trams, cars, etc. are used for both large and small screws. Screws have important tasks in industry. As long as there is industry on the earth, the function of screws will always be important. The screw is a common invention in people's production and life for thousands of years. According to the field of application, it is the first invention of mankind.