S-97768A181 8-32 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments.
• Enhanced durability and wear resistance from Rockwell B55 hardness and black oxide finish.
• High tensile and shear strength (70,000 psi tensile, 35,000 psi shear) for reliable performance under heavy loads.
• Precise alignment and reduced wear with Class 3A thread fit and standard shoulder fit for accurate component positioning.
• Easy installation and removal using a 3/32" hex drive and knurled head for improved grip.
• Wide compatibility with UNC coarse threads and right-hand threading for common industrial applications.
• Compliance with environmental standards including RoHS 3 and REACH, ensuring safe and sustainable use.

Professional Applications & Engineering Value

This 8-32 UNC shoulder screw is engineered to address critical alignment and durability challenges in precision assemblies. The 18-8 stainless steel material provides excellent resistance to corrosion and oxidation, while the black oxide finish adds an extra layer of protection against wear and galling. The 3/16" shoulder length and precise shoulder diameter allow for accurate positioning of components like bearings, gears, and linkages, reducing misalignment and extending equipment life. With a Class 3A thread fit and coarse UNC threads, it ensures secure fastening in high-vibration environments common in machinery, automotive, and electronics. The socket head with hex drive facilitates easy installation in confined spaces, making it a reliable choice for industrial shoulder screw applications requiring both strength and precision.

Specification Summary & Compliance

This shoulder screw features a Class 3A thread fit with UNC coarse threads for tight tolerances and reliable engagement. Key dimensions include a 3/16" shoulder length (tolerance: -0.005" to 0.005") and 3/16" shoulder diameter (tolerance: -0.004" to -0.002"), ensuring precision in assembly. Manufactured from 18-8 stainless steel with a black oxide finish, it meets industry standards for mechanical properties, including a tensile strength of 70,000 psi and shear strength of 35,000 psi. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), adhering to environmental and safety regulations for industrial use.