S-97768A349 5/16"-24 ASME B18.3 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 the black oxide finish, reducing maintenance needs
• Precise alignment and secure fastening with Class 3A thread fit and fine thread spacing for vibration resistance
• High load-bearing capacity with 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications
• Easy installation and removal using a hex drive and knurled head for improved grip and torque application
• Reliable performance in automated systems with a standard shoulder diameter and length for consistent positioning
• Compliance with industry standards including ASME B18.3, RoHS 3, and REACH for safe, regulated use

Professional Applications & Engineering Value

This 5/16"-24 UNF shoulder screw is engineered to address common industrial challenges such as misalignment and component wear. The 18-8 stainless steel material provides excellent corrosion resistance, while the black oxide finish adds an extra layer of protection against abrasion and oxidation. With a Class 3A thread fit and fine thread spacing, it ensures tight, secure connections that resist loosening under vibration, making it ideal for machinery, automotive assemblies, and precision equipment. The knurled head and hex drive facilitate quick installation in confined spaces, reducing assembly time and improving efficiency in high-volume production environments.

Specification Summary & Compliance

This shoulder screw features a Class 3A thread fit with precise dimensions, including a shoulder diameter tolerance of -0.004" to -0.002" and length tolerance of -0.005" to 0.005". It conforms to ASME B18.3 standards for consistent quality and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial markets.