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Machine screws are precision fasteners designed for use with pre-tapped holes or nuts. Unlike self-tapping screws that cut their own threads, machine screws have a straight shank with uniform full thread from head to tip. This provides consistent clamping force and creates stronger joints in metal-to-metal applications.
The thread on a machine screw runs the entire length of the shaft allowing the screw to be engaged at any point along its length. This makes machine screws versatile for different material thicknesses and assembly configurations. The uniform thread profile ensures smooth engagement with matching nuts or tapped holes.
Phillips cross recess drive provides good centering and is compatible with common screwdrivers found in most workshops. Slotted drive is the traditional straight line design, suitable for light to medium torque applications. Hex socket drive allows for higher torque transmission and is ideal for precision assembly work.
Pan head machine screws have a flat top with rounded sides that protrude above the surface. This provides a wide bearing surface for clamping. Flat head machine screws feature an 82 degree countersunk cone shape that sits flush with the material surface. This is ideal for applications requiring a smooth finish.
Fillister head screws have a higher head profile than pan heads, allowing for deeper drive engagement. Cheese head screws offer a cylindrical shape similar to pan head but with straight sides. Wafer head machine screws have a low profile wide head for applications with limited vertical clearance.
Stainless steel machine screws offer excellent corrosion resistance for outdoor and marine applications. Brass machine screws are corrosion resistant, non magnetic, and have a decorative finish ideal for switch boxes and electrical components.
Aluminum machine screws are lightweight and non magnetic, perfect for applications where weight reduction is important. Steel machine screws provide high strength at a cost effective price point. Bronze and copper options are available for specialized applications requiring specific conductivity or corrosion properties.
Metric sizes M2 M3 M4 M5 M6 available with standard coarse thread pitch. Standard lengths from 4mm to 40mm. Custom lengths and non standard sizes can be manufactured for OEM orders. Inch sizes are also available upon request.
Class 4.8 machine screws are suitable for general purpose fastening where moderate strength is required. Class 6.8 offers higher tensile strength for applications with greater load demands. Both grades are available across all materials and head styles.
Machine screws are widely used for electronics assemblies, home appliances, industrial machinery, automotive components, precision instruments, switch and socket mounting, computer hardware, medical equipment, and general mechanical fastening where pre tapped holes or nut plates are present.
Every batch undergoes 100 percent thread gauging and dimensional inspection. Our ISO 10012 certified measurement management system ensures accurate inspection data on every production run. Custom sizes, head markings, and special materials available for OEM orders. Bulk pricing for wholesale and distributor quantities. Factory direct shipping to over 60 countries worldwide.
Send us your inquiry with specifications, quantity, or custom requirements. We will provide a free quote and professional consultation immediately.
Unlike self-tapping screws that cut their own mating threads, machine screws feature a straight shank with uniform full threading designed specifically for pre-tapped holes or use with nuts, providing superior clamping force in metal assemblies.
We supply a complete variety of head styles including Pan head, 82-degree countersunk Flat head for flush seating, Fillister head for deeper drive capability, cylindrical Cheese head, and low-profile Wafer head for tight vertical clearances.
Options include corrosion-resistant Stainless Steel, non-magnetic Brass for electrical components, lightweight Aluminum, cost-effective high-strength Steel, as well as specialty Bronze and Copper.
Standard metric sizes include M2 through M6 with lengths from 4mm to 40mm. In addition, standard inch sizes, non-standard dimensions, custom head markings, and OEM order requirements are fully supported.
Each batch undergoes 100 percent thread gauging and dimensional inspection supported by an ISO 10012 certified measurement management system to ensure complete accuracy and adherence to standards.
Machine screws are produced in Class 4.8 for general-purpose mechanical fastening and Class 6.8 for high-demand applications requiring elevated tensile strength across various material choices.
