A machine screw is a fastening screw with a machine cut thread throughout the length of its shank, for use with a nut or driven into a tapped hole. Use to fasten various components together in machines, tools and more. The length of a machine screw is measured from under the head to the point of the screw. The truss head has a low rounded top surface with a flat bearing surface, greater in area than a round head fastener of the same nominal size. They are weaker than a pan or round fastener, but preferred in applications where minimal clearance exists above the head. The profile provides a trim, finished appearance.

• Use to fasten metal parts together
• Zinc finish for moderate corrosion protection
• Fasten with screwdriver to reduce risk of over-tightening
• If nuts are needed, use with nuts of the same finish and threading
• Stronger thread than wood screws, made finer and more precisely