S-8077A439 10-24 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction and Black Oxide finish, ideal for harsh industrial environments
• Precise component alignment through the 1/4" shoulder diameter with tight tolerances for reliable assembly
• High mechanical strength delivering 70,000 psi tensile and 35,000 psi shear strength for demanding applications
• Secure installation and removal with hex socket drive and knurled head for enhanced grip during torque application
• Consistent thread engagement with Class 3A UNC coarse threads ensuring reliable fastening in vibration-prone settings
• Extended service life supported by Rockwell B79 hardness and compliance with ASME B18.3 manufacturing standards
• Environmental responsibility through RoHS 3 and REACH compliance, meeting global regulatory requirements

Professional Applications & Engineering Value

This 10-24 UNC shoulder screw in 316 Stainless Steel with Black Oxide finish addresses critical engineering challenges in precision machinery and industrial equipment. The 3 1/4" shoulder length with controlled tolerances provides exact positioning for rotating components like gears and pulleys, eliminating misalignment issues. The coarse UNC threads and Class 3A fit maintain secure connections under vibration, while the hex socket drive and knurled head enable efficient installation in confined spaces. Ideal for industrial applications requiring corrosion resistance and high tensile strength, this screw ensures long-term reliability in automotive, manufacturing, and marine environments where durability and precision are paramount.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with Class 3A thread fit and precise shoulder dimensions (Diameter: 1/4" ±0.004", Length: 3 1/4" ±0.005"). The screw meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards, ensuring environmental safety and material integrity for global industrial use.