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The thread on a machine screw extends from just under the head all the way to the tip. This full thread design allows the screw to engage with nuts or tapped holes at any point along its length, making it suitable for various material thicknesses and assembly configurations.
Features a low profile domed head with a flat bearing surface underneath. This style provides good clamping force and is commonly used in electronics and appliance assembly.
Equipped with an 82 degree countersunk cone shape. When installed properly the head sits flush with or slightly below the material surface, creating a smooth finish without protruding parts.
Also known as socket cap screws, featuring a cylindrical head with a hexagonal recess. This allows for high torque tightening using an Allen key or hex driver, ideal for precision machinery.
Fillister head screws have a higher head profile than pan heads for deeper drive engagement. Cheese head screws offer a cylindrical shape similar to pan heads but with straight vertical sides.
Features a cross shaped recess that provides good centering and reduces cam out. Compatible with common screwdrivers found in most shops and assembly lines.
The traditional straight line design. While simple and widely available, it requires careful alignment during installation.
Offers excellent torque transmission without cam out. The hexagonal recess provides six driving points for even force distribution, ideal for high torque applications.
Provides excellent corrosion resistance for outdoor and marine environments. Grade 304 offers good all around performance while grade 316 provides enhanced resistance to salt water and chemicals.
Corrosion resistant, non magnetic, and provides an attractive gold like appearance. Commonly used for electrical components, switch plates, and decorative applications.
Offers high strength at a cost effective price point. Various surface finishes are available including zinc plating for mild corrosion resistance and black oxide for reduced glare.
Standard metric sizes include M2, M3, M4, M5, and M6 with coarse thread pitch. Length options range from 4mm to 40mm in standard increments. 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 applications where moderate clamping force is required. Class 6.8 offers higher tensile strength for applications with greater load demands or vibration exposure.
Machine screws are widely used for electronics housing assembly, home appliance manufacturing, industrial equipment maintenance, automotive component fastening, precision instrument construction, switch and outlet mounting, computer hardware assembly, medical device manufacturing, and general mechanical assembly where pre tapped holes or nut plates are present.
All machine screws undergo 100 percent thread gauging and dimensional inspection before packing. Class 4.8 and Class 6.8 strength options are available with material test reports upon request. Custom manufacturing is available for special head styles, thread types, lengths, and materials. Bulk pricing for wholesale and distributor orders with factory direct shipping worldwide.
Unlike self-tapping screws that create their own threads in materials, machine screws feature precision uniform threads engineered specifically for pre-tapped holes or use with mating nuts.
Common materials include Stainless Steel (Grade 304 for general corrosion resistance and Grade 316 for marine/chemical use), Brass (non-magnetic and decorative), and Carbon Steel (high strength with zinc or black oxide finishes).
Available head configurations include Pan head (low profile domed), Flat head (82-degree countersunk flush fit), Hex socket head (high torque socket cap), Fillister head, and Cheese head.
Metric sizes span M2 through M6 with coarse thread pitches and lengths from 4mm to 40mm. Strength options include Class 4.8 for general assembly and Class 6.8 for high-load or high-vibration applications.
Yes, custom fabrication is available for custom lengths, non-standard metric sizes, inch-based specifications, and specialized head/drive combinations supported by dimensional test reports.
