Machine Screws : Types, Sizes, and Applications

Machine Screws  |  Industrial Hardware  |  Updated 2026

Machine screws are precision fasteners designed to be used with pre-tapped holes or nuts. They are commonly used in metal, plastic, and machinery assemblies where accuracy and strength are required.

Head Styles & Applications

Available in a variety of head styles — including pan, flat, round, and socket head — machine screws are suited for both structural and decorative applications. Each head style is engineered for specific installation methods, torque requirements, and surface flush needs.

Sizes & Thread Options

Machine screws are manufactured in standard and metric sizes with coarse or fine threads to match different load requirements. Fine threads provide greater tensile strength and are preferred in applications subject to vibration, while coarse threads offer faster assembly in softer materials.

Materials & Performance

Machine screws are commonly made from stainless steel, carbon steel, or brass — offering options for corrosion resistance, strength, and electrical conductivity. Their uniform threading allows for consistent clamping force and reliable performance in industrial and commercial environments.