S-91054A502 5/16"-18 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments
• Enhanced surface durability through TiCN coating, providing excellent wear resistance and extended service life
• High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications
• Precise alignment and positioning ensured by the 3/8" shoulder diameter with tight tolerance control
• Reliable thread engagement with Class 2A UNC coarse threads for secure fastening and vibration resistance
• Easy installation and removal using standard 3/16" hex drive for efficient maintenance
• Compliance with international regulations including RoHS 3 and REACH for global industrial use

Professional Applications & Engineering Value

This precision shoulder screw is engineered to solve critical alignment and wear challenges in industrial machinery. The 18-8 Stainless Steel base material combined with TiCN coating provides exceptional corrosion and abrasion resistance, making it ideal for rotating assemblies, pivoting mechanisms, and precision fixturing where metal-to-metal contact occurs. The 3/8" shoulder diameter with precise tolerances ensures accurate component positioning while the 5/16"-18 UNC coarse thread maintains secure fastening under vibration. These features make it particularly valuable in automation equipment, conveyor systems, and manufacturing jigs where reliable performance and extended service life are essential for minimizing downtime and maintenance costs.

Specification Summary & Compliance

This shoulder screw features Class 2A thread fit per UNC standards with precise shoulder diameter tolerance of -0.002" to 0" and shoulder length tolerance of 0" to 0.003". Manufactured from 18-8 Stainless Steel with TiCN coating, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements for industrial applications.