S-90272A414 5/16"-18 x 1 3/8" ASME B18.6.3 Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in harsh industrial environments
• Exceptional load-bearing capacity with 60,000 psi tensile strength to withstand high-stress applications
• Optimized drive engagement through Phillips No. 4 drive design preventing cam-out during installation
• Reliable thread performance with UNC coarse spacing ensuring quick assembly and vibration resistance
• Precision manufacturing with Class 2A thread fit guaranteeing consistent mating with nuts and tapped holes
• Enhanced durability from Rockwell B70 hardness maintaining structural integrity under repeated use
• Regulatory compliance meeting ASME B18.6.3 standards for dimensional accuracy and quality assurance

Professional Applications & Engineering Value

This zinc-plated steel pan head screw delivers critical performance advantages for industrial assembly operations. The combination of UNC coarse threading and fully threaded design enables rapid installation in metal fabrication, machinery assembly, and structural applications where vibration resistance is paramount. The rounded pan head profile distributes clamping force evenly while the Phillips drive system provides secure tool engagement without damaging the fastener head. Engineered to solve common industrial challenges, this screw prevents loosening under dynamic loads and maintains corrosion protection in demanding environments including outdoor equipment, automotive components, and electrical enclosures. The 1 3/8" length and 5/16"-18 thread size make it ideal for medium-duty fastening requirements across multiple industrial sectors.

Specification Summary & Compliance

Manufactured to exacting ASME B18.6.3 specifications with Class 2A thread fit tolerance for precise engagement. The UNC coarse thread (5/16"-18) follows standardized dimensions for compatibility with industry components. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensures safe use across international markets. Mechanical properties include Rockwell B70 hardness and 60,000 psi tensile strength verification, confirming reliability for critical fastening applications.