S-91770A876 3/8"-16 x 1 1/4" ASME B18.6.3 Stainless Steel Truss Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from passivated 18-8 stainless steel construction, ensuring long-term reliability in harsh environments
• Exceptional 70,000 psi tensile strength provides reliable load-bearing capacity for demanding industrial applications
• Wide truss head design distributes clamping force effectively, reducing surface damage and preventing pull-through
• Class 2A thread fit ensures smooth assembly and consistent performance with standard UNC coarse threaded components
• Full threading along the 1-1/4" length offers maximum engagement flexibility and secure fastening across various material thicknesses
• Phillips No. 4 drive system enables efficient installation with common tools while resisting cam-out during high-torque applications
• Compliance with major industry standards including ASME B18.6.3, RoHS 3, and REACH for guaranteed quality and environmental safety

Professional Applications & Engineering Value

These 3/8"-16 UNC fully threaded screws with rounded truss head design solve critical engineering challenges in industrial assembly. The passivated 18-8 stainless steel construction provides exceptional resistance to corrosion and chemical exposure, making them ideal for outdoor equipment, marine applications, and chemical processing facilities. The wide truss head creates a larger bearing surface that distributes clamping force evenly, preventing damage to soft materials and reducing the risk of fastener failure under vibration. With coarse threading and Class 2A fit, these screws offer quick installation and reliable performance in wood, metal, and composite assemblies where vibration resistance and structural integrity are paramount. The combination of 70,000 psi tensile strength and Rockwell B70 hardness ensures these fasteners maintain their mechanical properties in high-stress applications.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit and UNC coarse threading (3/8"-16). These rounded truss head Phillips screws comply with ASME B18.6.3 specifications for dimensional accuracy and performance. The fasteners are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring they meet current industry standards for hazardous substance restrictions and chemical safety.