S-97768A266 10-32 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Enhanced wear protection from black oxide finish, reducing friction and extending service life
• Precise component alignment with Class 3A thread fit and 1-1/2" shoulder length for stable assemblies
• High-strength performance delivering 70,000 psi tensile strength for demanding mechanical applications
• Secure, non-slip installation thanks to knurled head and hex socket drive design
• Reliable fine threading with 10-32 UNF right-hand threads ensuring vibration resistance
• Compliance with industry standards including ASME B18.3 for consistent quality and interchangeability

Professional Applications & Engineering Value

This precision shoulder screw is engineered to address critical alignment and load-bearing challenges in machinery, automation, and precision equipment. The 18-8 stainless steel material combined with a black oxide finish provides excellent corrosion resistance, reducing maintenance in humid or chemically aggressive settings. The 1-1/2" shoulder length and Class 3A thread fit ensure minimal radial play, making it ideal for pivoting mechanisms, bearing mounts, and linkages where exact positioning is crucial. Its 70,000 psi tensile strength and Rockwell B55 hardness support high-stress applications, while the knurled socket head allows for secure tool engagement during installation, preventing cam-out in confined spaces.

Specification Summary & Compliance

This shoulder screw adheres to Class 3A thread fit for precise engagement and features a shoulder diameter tolerance of -0.004" to -0.002" with length tolerance of -0.005" to 0.005". Manufactured in compliance with ASME B18.3 specifications, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safety and regulatory conformity for global industrial use.