S-91273A701 5/8"-11 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, extending service life
• High tensile strength of 70,000 psi ensures reliable performance under heavy loads
• Precision 4" shoulder length with tight tolerances guarantees accurate alignment in assemblies
• Knurled socket head with hex drive provides secure, non-slip installation and removal
• Coarse UNC thread with Class 2A fit offers quick assembly and consistent engagement
• Compliance with RoHS 3 and REACH meets stringent environmental and safety standards

Professional Applications & Engineering Value

This 5/8"-11 UNC shoulder screw is engineered to address critical alignment and durability challenges in demanding applications. The 18-8 stainless steel material provides excellent resistance to corrosion and oxidation, while the black oxide finish enhances surface hardness and reduces galling. The precisely machined 4" shoulder length with minimal tolerances ensures exact component positioning in machinery, pivots, and rotating assemblies, minimizing wear and vibration. With a Rockwell B55 hardness and 70,000 psi tensile strength, it withstands high-stress conditions in automotive, aerospace, and industrial equipment, offering long-term reliability and reduced maintenance costs.

Specification Summary & Compliance

This shoulder screw features a Class 2A thread fit for standard UNC coarse threading, ensuring consistent engagement and ease of assembly. The shoulder diameter tolerance is -0.004" to -0.002", and shoulder length tolerance is -0.005" to 0.005", providing high precision for alignment-critical applications. Manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it meets environmental and safety standards for industrial use.