S-8077A297 3/8"-16 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel material and Black Oxide finish, ideal for harsh industrial environments
• Precise component alignment ensured by Class 3A thread fit and standard shoulder fit for reduced assembly errors
• High mechanical strength with 70,000 psi tensile and 35,000 psi shear strength for demanding applications
• Secure installation with 1/4" hex drive and knurled head for enhanced grip and torque transmission
• Reliable dimensional stability from tight shoulder diameter and length tolerances for consistent performance
• Broad compatibility with UNC coarse threads and standard socket head profile for versatile use
• Compliance with industry standards including ASME B18.3, RoHS 3, and REACH for quality assurance

Professional Applications & Engineering Value

This 316 Stainless Steel shoulder screw with Black Oxide finish addresses critical needs in precision machinery, automation systems, and heavy-duty equipment by providing exceptional corrosion resistance and durability. The Class 3A thread fit and UNC coarse threads ensure secure fastening in high-vibration environments, minimizing loosening risks. With a 1/2" shoulder diameter and 7 1/2" shoulder length, it offers stable rotational support for components like bearings and pulleys, reducing wear and maintenance. The socket head design with 1/4" hex drive allows for easy installation in confined spaces, enhancing assembly efficiency in industrial applications.

Specification Summary & Compliance

This shoulder screw features precise dimensions, including a thread size of 3/8"-16 UNC with Class 3A thread fit, shoulder diameter tolerance of -0.004" to -0.002", and shoulder length tolerance of -0.005" to 0.005". It meets ASME B18.3 specifications for dimensional accuracy and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and reliability in professional use.