S-91785A578 5/16"-18 x 1/2" ASME B18.6.3 Stainless Steel Truss Head Slotted Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish for long-lasting performance in harsh environments
• Enhanced clamping force and vibration resistance due to the wide truss head design that distributes load over a larger surface area
• High-strength durability with Rockwell B100 hardness and 100,000 psi tensile strength to withstand demanding industrial applications
• Easy installation and removal with standard slotted drive design for compatibility with common tools
• Reliable thread engagement through fully threaded UNC coarse threads with Class 2A fit for secure fastening
• Broad compatibility with 5/16"-18 UNC thread size meeting common industrial requirements
• Regulatory compliance assurance meeting ASME B18.6.3 standards and environmental regulations for worry-free procurement

Professional Applications & Engineering Value

These 18-8 stainless steel truss head screws deliver exceptional engineering value in industrial applications where vibration resistance and corrosion protection are critical. The wide truss head design provides superior load distribution, preventing surface damage and maintaining joint integrity in machinery, electrical enclosures, and structural assemblies. The passivated finish enhances the natural corrosion resistance of stainless steel, making these slotted drive screws ideal for outdoor equipment, marine environments, and chemical processing facilities. With fully threaded UNC coarse threads and Class 2A thread fit, they ensure reliable fastening in materials where vibration loosening is a concern, while the right-hand threading follows industry standards for straightforward installation.

Specification Summary & Compliance

This 5/16"-18 UNC x 1/2" truss head screw features precise Class 2A thread fit tolerances and coarse thread spacing per UNC standards. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and performance. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring environmental regulatory adherence for industrial procurement and global supply chain requirements.