S-97345A226 5/16"-18 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 Class 3A thread fit ensures reliable engagement and vibration resistance in critical assemblies
• High tensile strength of 70,000 psi provides exceptional load-bearing capacity for demanding applications
• Knurled socket head design offers improved grip and tool engagement during installation and removal
• Tight shoulder tolerances maintain consistent alignment and rotational stability in machinery components
• Compliance with ASME B18.3 standards guarantees dimensional accuracy and interchangeability
• Environmental regulation compliance meets RoHS 3 and REACH requirements for global industrial use

Professional Applications & Engineering Value

This 316 Stainless Steel shoulder screw delivers exceptional performance in precision machinery, automation systems, and chemical processing equipment where corrosion resistance and dimensional stability are critical. The Class 3A thread fit and UNC coarse thread profile prevent loosening under vibration while facilitating faster assembly. The knurled socket head with 3/16" hex drive provides secure tool engagement in confined spaces. With 1 1/8" shoulder length maintaining precise component alignment and 70,000 psi tensile strength supporting heavy rotational loads, this fastener solves alignment and durability challenges in conveyor systems, robotic arms, and precision instruments exposed to corrosive elements.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with Class 3A thread fit precision and tight shoulder tolerances (diameter: -0.004" to -0.002", length: -0.005" to 0.005"). Features 5/16"-18 UNC coarse threads with right-hand direction and standard shoulder fit. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial applications worldwide.