S-97345A456 10-32 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh chemical and marine environments
• Exceptional mechanical strength with 70,000 psi tensile and 35,000 psi shear strength for high-load applications
• Precise thread engagement with Class 3A UNF fine threads ensuring reliable fastening in critical assemblies
• Secure installation and removal with hex socket drive and knurled head for enhanced grip and torque transmission
• Accurate component positioning with precisely machined shoulder providing consistent pivot points and alignment
• Regulatory compliance assurance meeting ASME B18.3 specifications and environmental standards (RoHS 3, REACH)
• Optimized for fine-adjustment applications with 10-32 UNF thread profile enabling precise mechanical adjustments

Professional Applications & Engineering Value

This 316 Stainless Steel shoulder screw delivers critical performance in precision mechanical systems where corrosion resistance and dimensional stability are paramount. The Class 3A UNF thread fit ensures zero backlash in assemblies requiring exact positioning, while the knurled head with hex socket drive prevents tool slippage during high-torque installations. Engineers specify these components for rotating assemblies, pivot mechanisms, and precision instrumentation where the machined shoulder serves as a reliable bearing surface or spacing element. The combination of fine threading and corrosion-resistant 316 stainless steel makes these fasteners ideal for medical equipment, food processing machinery, and marine applications where frequent washdowns and exposure to aggressive environments would compromise inferior materials.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with Class 3A thread fit tolerance for precision applications. Features include: 10-32 UNF fine threads, 1/4" shoulder length (±0.005" tolerance), 1/4" shoulder diameter (-0.004" to -0.002" tolerance), and Rockwell B79 hardness. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for restricted substance control.