S-91829A540 10-32 MS51575-23, NASM51575 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel and passivated finish, ideal for harsh environments and extended service life.
• Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under high stress.
• Precise alignment and pivot function enabled by the accurately machined shoulder with a tight diameter tolerance of -0.001" to 0".
• Secure and fine-threaded fastening with 10-32 UNF right-hand threads and Class 2A fit, ensuring vibration resistance and consistent clamping force.
• Easy installation and removal using the standard socket head with slotted drive, accommodating various tools for efficient assembly.
• Full regulatory compliance with MS51575, RoHS 3, and REACH standards, guaranteeing safety and environmental responsibility.
• Versatile shoulder dimensions with 1/4" shoulder length and 3/4" overall shoulder length, providing flexibility in component spacing and mounting.

Professional Applications & Engineering Value

This precision shoulder screw is engineered to address critical alignment and durability challenges in industrial assemblies. The 18-8 Stainless Steel construction, enhanced by a passivated finish, provides excellent resistance to corrosion and oxidation, making it suitable for applications in machinery, automotive, and electronics where exposure to moisture or chemicals is common. The 10-32 UNF fine thread and Class 2A thread fit ensure a tight, reliable connection that minimizes loosening under vibration, while the precisely toleranced shoulder (-0.001" to 0" diameter tolerance) acts as a dependable pivot or spacer in linkages, bearings, and rotating components. By integrating high tensile strength and compliance with MS51575 standards, this screw reduces maintenance needs and enhances the longevity of precision equipment, delivering consistent performance in demanding environments.

Specification Summary & Compliance

This shoulder screw features a 10-32 UNF fine thread with Class 2A thread fit for precise engagement, and a shoulder diameter tolerance of -0.001" to 0" with length tolerance of 0" to 0.002" to ensure accurate assembly. Manufactured in accordance with MS51575 specifications, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting safe and environmentally conscious industrial use.