S-97345A824 1/2"-13 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh chemical and marine environments
• Precise component alignment enabled by the 2" shoulder with tight diameter tolerance for reduced assembly vibration
• High-strength performance delivering 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications
• Secure installation and removal with 5/16" hex drive and knurled head for superior grip and torque transmission
• Reliable thread engagement through Class 3A UNC coarse threads ensuring consistent fastening in high-vibration settings
• Industry-standard compliance meeting ASME B18.3 specifications for dimensional accuracy and interchangeability
• Environmental responsibility with RoHS 3 and REACH compliance for safe use across regulated industries

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw delivers critical engineering solutions where precision alignment and corrosion resistance are paramount. The 2" shoulder length with controlled diameter tolerance provides exact bearing surfaces for rotating components in machinery, eliminating misalignment and reducing wear. The Class 3A UNC coarse thread maintains secure fastening in high-vibration industrial equipment, while the knurled socket head ensures reliable torque application during maintenance. With exceptional tensile strength and Rockwell B79 hardness, it withstands heavy loads in manufacturing fixtures, automotive assemblies, and marine equipment where corrosion-resistant fasteners are essential for long-term reliability.

Specification Summary & Compliance

Manufactured to ASME B18.3 standards with Class 3A thread fit and shoulder diameter tolerance of -0.004" to -0.002". Features 1/2"-13 UNC coarse threads with right-hand direction and 3/4" thread length. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations.