S-97832A137 3/8"-24 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction for long-lasting performance in harsh industrial environments
• Precise component alignment through Class 3A thread fit and controlled shoulder diameter tolerances for reduced assembly vibration
• Enhanced torque transmission with hex socket drive and knurled head for secure tool engagement and reduced slippage
• High load-bearing capacity with 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications
• Reliable fine thread engagement with 3/8"-24 UNF threads maintaining secure fastening under vibration
• Extended service life with Rockwell B55 hardness providing excellent wear resistance
• Regulatory compliance assurance meeting ASME B18.3 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

This 18-8 Stainless Steel shoulder screw delivers exceptional engineering value in precision assemblies requiring exact component positioning. The 2½" shoulder length with controlled diameter tolerance provides precise bearing surfaces for rotating components in machinery, while the Class 3A thread fit ensures secure fastening in high-vibration environments. The fine UNF threads offer superior resistance to loosening compared to coarse threads, making these socket head shoulder screws ideal for precision equipment, automation systems, and industrial machinery where alignment accuracy and corrosion resistance are critical. The hex drive combined with knurled head texture prevents tool slippage during installation, reducing assembly time and potential damage to fastener heads.

Specification Summary & Compliance

This precision shoulder screw features 3/8"-24 UNF fine threads with Class 3A fit for superior thread engagement. The shoulder maintains tight diameter tolerance of -0.004" to -0.002" and length tolerance of -0.005" to 0.005" for precise component alignment. Manufactured to ASME B18.3 specifications with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring both mechanical reliability and regulatory adherence for industrial applications.