S-94035A537 10-32 MS51576-20, NASM51576 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ensuring long-term reliability in harsh environments.
• Precise component alignment due to the exact 1/2" shoulder length with minimal tolerance, reducing assembly errors and improving machine performance.
• High-strength fastening offering 70,000 psi tensile strength and Rockwell B55 hardness for dependable load-bearing in demanding applications.
• Secure hex drive engagement with a 1/8" drive size, allowing for easy installation and high torque transmission without stripping.
• Fine thread reliability with 10-32 UNF Class 2A thread fit, providing vibration resistance and consistent clamping force.
• Compliance with strict industry standards including MS51576-20, ensuring interchangeability and quality for aerospace and industrial uses.
• Environmental regulation adherence with RoHS 3 and REACH compliance, making it suitable for global supply chains and sensitive applications.

Professional Applications & Engineering Value

This precision shoulder screw is engineered to address critical alignment and durability challenges in industrial machinery, aerospace assemblies, and automated systems. Made from 18-8 stainless steel with a passivated finish, it resists corrosion and wear, extending service life in humid or chemically exposed settings. The 10-32 UNF fine thread and Class 2A fit ensure tight, vibration-resistant connections, while the smooth socket head with hex drive facilitates quick installation in confined spaces. The precisely machined 1/2" shoulder acts as a reliable pivot or spacer, minimizing part movement and reducing maintenance needs. Ideal for precision fasteners in rotating equipment and precision instruments, it enhances operational efficiency and reduces downtime.

Specification Summary & Compliance

This shoulder screw adheres to Class 2A thread fit and UNF thread standards, with shoulder diameter tolerance of -0.001" to 0" and length tolerance of 0" to 0.002" for high dimensional accuracy. It meets MS51576-20 (NASM51576) specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material quality for professional use.