S-91770A653 3/8"-16 x 1" 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 for long-lasting performance in harsh environments
• Enhanced load distribution through the wide truss head design, reducing surface pressure and preventing material damage
• High-strength reliability with 70,000 psi tensile strength and Rockwell B70 hardness for demanding industrial applications
• Quick installation and secure fastening with No. 4 Phillips drive and fully threaded UNC coarse spacing
• Precision thread fit with Class 2A tolerance ensuring consistent engagement and vibration resistance
• Regulatory compliance assurance meeting ASME B18.6.3 standards while being RoHS 3 and REACH compliant
• Versatile application capability suitable for various industrial assemblies requiring corrosion-resistant heavy-duty fasteners

Professional Applications & Engineering Value

These passivated 18-8 stainless steel truss head screws deliver exceptional engineering value in corrosive or high-stress environments. The wide-profile rounded head provides superior clamping force distribution, preventing surface damage in softer materials while maintaining secure fastening. The fully threaded UNC coarse spacing with Class 2A fit ensures rapid installation and reliable performance in vibration-prone applications. With 70,000 psi tensile strength and corrosion-resistant properties, these screws solve critical challenges in industrial equipment, marine applications, and outdoor structures where durability and regulatory compliance are paramount. The combination of No. 4 Phillips drive and truss head design offers optimal torque transmission while minimizing cam-out risks during high-volume assembly operations.

Specification Summary & Compliance

This heavy-duty fastener features precision 3/8"-16 UNC coarse threads with Class 2A thread fit for consistent engagement and reliable performance. Manufactured to meet ASME B18.6.3 specifications for dimensional accuracy and mechanical properties. The screw is fully compliant with RoHS 3 (2015/863/EU) regulations and REACH (EC 1907/2006) requirements, ensuring environmental safety and regulatory adherence for industrial applications worldwide.