SS304 GB819 M6 Cross Recessed CSK Head Machine Screws

Made from stainless steel 304, these screws are resistant to air, water, acids, and alkali salts. Their Phillips head design allows for easy installation and removal with standard screwdrivers.Commonly used in machinery, electronics, appliances, and construction, SS304 screws offer strength and durability. Their countersunk heads sit flush with the material surface, providing a clean and finished look. Suitable for both metal and plastic applications, these screws are ideal for a wide range of projects, from home repairs to industrial manufacturing.

The Stainless steel 304 GB819 M6 Cross Recessed CSK Head Machine Screws are precision-engineered fasteners designed to meet the rigorous demands of industrial and commercial applications. Crafted from stainless steel 304 (AISI 304) , these screws offer exceptional corrosion resistance and mechanical durability, making them ideal for environments exposed to moisture, chemicals, or aggressive atmospheric conditions. Compliant with the GB819 national standard , they feature an M6 metric thread profile (with a pitch of 1.0mm) and a cross recessed countersunk (CSK) head , combining robust performance with a sleek, low-profile aesthetic. The 82° conical bearing surface of the CSK head ensures even force distribution across thin materials, minimizing deformation risks in substrates like sheet metal, plastics, or composite panels—a critical advantage in machinery assemblies, electronics enclosures, and structural components requiring both strength and visual refinement.

These screws incorporate a Type 2 Phillips drive system within the cross recess, enabling reliable torque transmission during manual or automated assembly while reducing cam-out risk under high-torque applications. Their non-magnetic properties in annealed conditions further enhance compatibility with electromagnetic-sensitive equipment, while optional surface treatments—such as electropolishing or passivation—can be applied to optimize corrosion resistance without compromising dimensional accuracy. Engineered through advanced cold-heading and thread-rolling processes, they achieve a minimum tensile strength of 500 MPa and yield strength of 200 MPa (per ASTM F593 standards), ensuring reliability under dynamic loads.

Compliant with GB819 , the SS304 GB819 M6 Cross Recessed CSK Head Machine Screws undergo rigorous mechanical testing, including proof load verification, hardness assessments (150–200 HV), and salt spray resistance evaluations, guaranteeing consistent quality across production batches. Available in standardized lengths from 6mm to 50mm , they integrate seamlessly with tapped holes or mating nuts per ISO 4032/4033 specifications, offering flexibility in joint design. Their temperature tolerance spans from cryogenic conditions to elevated operating temperatures exceeding 800°C in oxidizing atmospheres, broadening their utility in aerospace, automotive, and renewable energy systems. Whether securing heavy-duty machinery, appliance housings, or medical device assemblies, these screws deliver a cost-effective, long-term solution that balances regulatory compliance, mechanical reliability, and functional versatility.