S-99154A365 8-32 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and extended service life
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness, ensuring reliable performance under high-stress conditions
• Precise component alignment due to the 3/16" shoulder diameter with tight tolerances, minimizing play and vibration in assemblies
• Easy installation and space-saving design with the low socket head, allowing for use in confined spaces and providing a secure drive
• Wide compatibility and reliable threading with UNC coarse threads and Class 2A fit, ensuring consistent engagement and reducing cross-threading risks
• Environmental and regulatory compliance with RoHS 3 and REACH standards, making it safe for various global markets and applications
• Right-hand thread direction for standard assembly processes, facilitating quick and efficient installation in common machinery

Professional Applications & Engineering Value

This 8-32 UNC shoulder screw is engineered to address critical challenges in precision assemblies, such as maintaining exact part alignment and resisting operational stresses. The 18-8 stainless steel material offers excellent corrosion resistance, which is vital for applications in moist or chemically aggressive environments, reducing maintenance needs and downtime. The low socket head design not only saves space but also provides a secure drive, minimizing the risk of stripping during torque application. With a 3/16" shoulder diameter and precise tolerances, it ensures minimal radial movement, making it ideal for pivots, guides, and bearing surfaces in machinery, automotive, and electronics. The coarse UNC threads and Class 2A fit deliver reliable fastening in dynamic loads, while compliance with RoHS and REACH supports use in regulated industries, enhancing product safety and marketability.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy. Key specifications include a thread diameter of 0.164", shoulder diameter of 3/16" with a tolerance of -0.001" to 0", and shoulder length of 3/8" with a tolerance of 0" to 0.002", ensuring precise assembly. It is manufactured from 18-8 stainless steel with a tensile strength of 70,000 psi and Rockwell B55 hardness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and industrial applications.