S-90292A134 5/16"-18 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from 17-4 PH Stainless Steel material, ideal for harsh industrial environments
• Exceptional load-bearing capacity with 130,000 psi tensile strength and 65,000 psi shear strength for heavy-duty applications
• Precise component alignment through Class 3A thread fit and controlled shoulder diameter tolerances
• Enhanced grip and torque transmission with knurled head texture and 3/16" hex drive socket
• Reliable coarse threading using 5/16"-18 UNC standard for faster assembly and reduced cross-threading risk
• Consistent performance compliance meeting ASME B18.3 specifications and global RoHS 3/REACH regulations
• Optimized durability with Rockwell C28 hardness balancing strength and machinability

Professional Applications & Engineering Value

This 17-4 PH Stainless Steel shoulder screw delivers critical engineering solutions where precision alignment and high strength are paramount. The Class 3A thread fit ensures zero-play connections in rotating assemblies, while the 1/2" shoulder length provides exact component spacing in machinery, automation systems, and precision instruments. The knurled head texture combined with hex socket drive prevents tool slippage during high-torque installation. Engineered for industrial shoulder screw applications requiring corrosion resistance and 130,000 psi tensile strength, it eliminates premature failure in vibrating environments and maintains dimensional stability under extreme loads.

Specification Summary & Compliance

Manufactured to ASME B18.3 standards with 5/16"-18 UNC coarse threads in Class 3A fit. Shoulder diameter tolerance maintained at -0.004" to -0.002" with shoulder length tolerance of -0.005" to 0.005". Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Material certification includes Rockwell C28 hardness and mechanical properties verified to 130,000 psi tensile strength.