S-91770A847 10-32 x 3" ASME B18.6.3 Stainless Steel Truss Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh industrial environments
• Enhanced load distribution from the wide truss head design, reducing surface damage and improving joint integrity
• Reliable 70,000 psi tensile strength and Rockwell B70 hardness for durable performance under mechanical stress
• Precise Class 2A thread fit ensures smooth assembly and consistent engagement in UNF fine thread applications
• Optimized partial threading allows secure fastening while minimizing thread interference in specific assembly zones
• Easy installation with Phillips No. 2 drive, providing common tool compatibility and efficient torque transfer
• Full regulatory compliance with ASME B18.6.3, RoHS 3, and REACH standards for guaranteed quality and safety

Professional Applications & Engineering Value

This 10-32 UNF partially threaded screw delivers exceptional engineering value in applications requiring precise fastener control and corrosion resistance. The passivated 18-8 stainless steel material effectively combats oxidation and chemical exposure, making it suitable for industrial equipment, electronic enclosures, and outdoor machinery where environmental durability is critical. The unique rounded truss head provides a larger bearing surface, distributing clamp load evenly to prevent material deformation in softer substrates. With its fine thread spacing and partial threading design, it offers superior grip in pre-tapped holes while allowing unthreaded shank sections to act as precision guides or clearance features. These characteristics solve common assembly challenges like vibration loosening and galvanic corrosion, ensuring long-term reliability in demanding B2B applications.

Specification Summary & Compliance

This fastener maintains Class 2A thread fit tolerance for consistent UNF thread engagement and features a 3" length with 1½" minimum thread length. Manufacturing follows ASME B18.6.3 specifications for dimensional accuracy and performance. The screw is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material transparency for industrial supply chains.