S-97133A180 M4 x 8 mm Sanitary Stainless Steel Truss Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316L stainless steel material, ideal for harsh, wet, and acidic environments in food processing.
• Enhanced hygiene and cleanability thanks to the smooth 32 Ra exterior finish and rounded truss head design, minimizing bacterial buildup.
• Reliable fastening in high-stress applications with a tensile strength of 70,000 psi and Rockwell B96 hardness for long-term durability.
• Easy installation and secure fit using the 6 mm wrench flats drive and Class 6g coarse threading, reducing assembly time and risk of cross-threading.
• Broad compatibility and compliance with RoHS 3 regulations, ensuring safety for food-contact and sanitary equipment.
• Optimal load distribution from the wide truss head, preventing surface damage and maintaining seal integrity in sensitive setups.
• Full-thread engagement for maximum grip and vibration resistance across the entire 8 mm length in metric assemblies.

Professional Applications & Engineering Value

Engineered for demanding food industry and sanitary applications, this M4 rounded truss head screw addresses critical challenges like corrosion, contamination, and mechanical failure. The 316L stainless steel composition resists pitting from cleaning agents and acidic substances, while the fully threaded coarse pitch (0.7 mm) and Class 6g tolerance ensure quick, precise installation without stripping. The low-profile truss head with wrench flats provides ample torque application and a smooth, easy-to-clean surface, reducing downtime in hygiene-sensitive environments. By combining high tensile strength and RoHS 3 compliance, these screws deliver consistent performance in equipment such as food processors, conveyors, and medical devices, where reliability and regulatory adherence are paramount.

Specification Summary & Compliance

This screw features precise metric M4 x 0.7 mm coarse threading with Class 6g fit for standard industrial use. It complies with RoHS 3 (2015/863/EU) regulations, ensuring restriction of hazardous substances. Dimensions include an 8 mm length, 11 mm head diameter, and 6 mm drive size, manufactured to consistent quality for reliable fastening in sanitary settings.