S-91273A923 1/2"-13 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction for reliable performance in harsh industrial environments
• Precise component alignment thanks to the 6" shoulder length with tight ±0.005" tolerance for consistent positioning
• High load-bearing capability with 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications
• Secure installation and removal through the knurled hex socket head design that prevents tool slippage
• Reliable thread engagement with Class 2A UNC coarse threads ensuring proper fit and vibration resistance
• Enhanced durability with Rockwell B55 hardness providing excellent wear resistance
• Environmental compliance meeting RoHS 3 and REACH regulations for safe use across industries

Professional Applications & Engineering Value

This 18-8 Stainless Steel shoulder screw delivers exceptional engineering value in precision alignment applications where component positioning is critical. The 6" shoulder length with tight manufacturing tolerances ensures precise bearing surfaces and accurate component spacing in machinery, automation systems, and rotating assemblies. The 1/2"-13 UNC coarse threads provide excellent engagement in various materials while resisting vibration-induced loosening. The hex socket knurled head design offers superior torque transmission during installation, preventing cam-out and tool damage. These shoulder screws serve as ideal alignment pin screws in manufacturing equipment, conveyor systems, and precision instruments where dimensional stability and corrosion resistance are paramount. The combination of high tensile strength and stainless steel material makes these fasteners suitable for demanding environments including food processing, chemical handling, and outdoor applications.

Specification Summary & Compliance

This precision shoulder screw features Class 2A thread fit with 1/2"-13 UNC coarse threads ensuring proper engagement and interchangeability. The shoulder diameter maintains tight tolerance of -0.004" to -0.002" while the critical 6" shoulder length maintains ±0.005" precision. Manufactured from 18-8 Stainless Steel with Rockwell B55 hardness, this fastener complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for global industrial applications requiring strict material compliance standards.