S-91273A617 5/16"-24 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 black oxide finish, reducing maintenance needs
• High tensile strength of 70,000 psi ensures reliable performance under heavy loads
• Precise shoulder positioning with 3/4" shoulder length and tight tolerances for accurate component alignment
• Secure hex drive engagement using a 5/32" drive size, preventing stripping during installation
• Fine UNF thread design provides superior vibration resistance and clamping force
• Knurled head texture offers improved grip for manual adjustments in confined spaces

Professional Applications & Engineering Value

This 5/16"-24 UNF shoulder screw is engineered to address critical alignment and fastening challenges in industrial machinery, automation systems, and precision equipment. The 18-8 stainless steel material combined with black oxide finish delivers excellent corrosion resistance, extending service life in demanding environments. The 3/4" shoulder length with controlled tolerances ensures precise component positioning, reducing wear and misalignment in rotating assemblies. With a Class 2A thread fit and fine UNF threads, it maintains consistent clamping force under vibration, making it ideal for applications requiring reliable shoulder screw performance in manufacturing, robotics, and automotive systems.

Specification Summary & Compliance

This shoulder screw features Class 2A thread fit with UNF thread standards, ensuring dimensional accuracy. Shoulder diameter tolerance is -0.004" to -0.002", and shoulder length tolerance is -0.005" to 0.005" for precise engineering applications. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting environmental and safety standards for industrial use.