S-97832A301 5/16"-24 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Grip and Assembly Efficiency with knurled socket head design for superior tool engagement and reduced slippage during installation
• Exceptional Corrosion Resistance provided by 18-8 Stainless Steel construction, ideal for harsh industrial environments
• Precise Component Alignment enabled by the 3/8" shoulder diameter with tight tolerances for accurate positioning
• High Load-Bearing Capability with 70,000 psi tensile strength and 35,000 psi minimum shear strength for demanding applications
• Superior Thread Reliability through Class 3A fit and 5/16"-24 UNF fine threads ensuring secure fastening in vibration-prone settings
• Extended Service Life with Rockwell B55 hardness providing excellent wear resistance and durability
• Regulatory Compliance Assurance meeting ASME B18.3 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

This high-precision shoulder screw delivers exceptional engineering value in applications requiring precise component alignment and reliable fastening. The 18-8 Stainless Steel construction offers superior corrosion resistance for machinery operating in challenging environments, while the knurled socket head with 3/16" hex drive ensures secure tool engagement during assembly and maintenance. The 1" shoulder length with controlled tolerances provides accurate bearing surfaces for rotating components in industrial equipment, automotive assemblies, and precision machinery. The 5/16"-24 UNF fine threads with Class 3A fit maintain clamping force in high-vibration applications, preventing loosening and ensuring long-term operational reliability. These features combine to solve critical alignment and durability challenges in demanding engineering applications.

Specification Summary & Compliance

This shoulder screw features precision Class 3A thread fit with 5/16"-24 UNF fine threads and maintains tight dimensional tolerances including shoulder diameter (-0.004" to -0.002") and shoulder length (-0.005" to 0.005"). Manufactured in compliance with ASME B18.3 specifications and meets environmental standards including RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant requirements. The inch system measurement ensures compatibility with standard industrial equipment and replacement parts.