S-91273A928 5/8"-11 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments
• Precise component alignment thanks to the 4" shoulder length with tight tolerances for stable assemblies
• High mechanical strength delivering 70,000 psi tensile and 35,000 psi shear strength for demanding applications
• Secure installation and removal with knurled hex socket head providing superior anti-slip grip
• Reliable thread engagement through Class 2A UNC coarse threads ensuring consistent fastening performance
• Broad regulatory compliance meeting RoHS 3 and REACH standards for global industrial use
• Optimized drive efficiency with 5/16" hex drive enabling high torque application without stripping

Professional Applications & Engineering Value

This shoulder screw delivers critical engineering solutions where precise rotational alignment and axial positioning are paramount. The 18-8 Stainless Steel material provides excellent corrosion resistance in manufacturing, automation, and machinery applications, while the 4" shoulder length with controlled tolerances acts as a reliable bearing surface for moving parts. The knurled hex socket head ensures secure tool engagement during high-torque assembly, preventing cam-out in confined spaces. With 5/8"-11 UNC coarse threads and Class 2A fit, it offers quick installation and vibration resistance in heavy-duty equipment, pivot mechanisms, and precision fixturing systems where dimensional stability under load is critical.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit and shoulder diameter tolerance of -0.004" to -0.002". Features UNC coarse threads with right-hand direction and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Mechanical properties include Rockwell B55 hardness and 70,000 psi tensile strength for reliable performance in industrial applications.