S-97345A701 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 environments and extended service life
• Exceptional mechanical strength with 70,000 psi tensile strength and 35,000 psi minimum shear strength for reliable performance under high stress
• Precise alignment and smooth rotation provided by the 2" shoulder with controlled diameter and length tolerances
• Secure and easy installation with a 1/4" hex socket drive and knurled head for improved grip and torque application
• Consistent and reliable thread engagement ensured by Class 3A thread fit and 5/16"-18 UNC coarse threading
• Compliance with industry standards including ASME B18.3, RoHS 3, and REACH for quality assurance and environmental safety
• Enhanced durability with Rockwell B79 hardness, providing excellent wear resistance in demanding applications

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw is engineered to address critical alignment and wear challenges in industrial applications. The precisely machined 2" shoulder length acts as a pivot, bearing surface, or locator, minimizing misalignment and reducing wear on mating components. Its 5/16"-18 UNC coarse thread and Class 3A fit ensure rapid assembly and vibration resistance, which is vital in machinery, automotive assemblies, and conveyor systems. The hex socket drive and knurled head facilitate installation in confined spaces while preventing tool slippage. Made from corrosion-resistant 316 stainless steel, it performs reliably in moist or chemically aggressive environments, offering a long-lasting fastening solution that reduces maintenance downtime and replacement costs.

Specification Summary & Compliance

This shoulder screw features a 5/16"-18 UNC thread with a Class 3A thread fit for high precision. The shoulder has a diameter of 1/2" (tolerance: -0.004" to -0.002") and a length of 2" (tolerance: -0.005" to 0.005"). It is manufactured in compliance with ASME B18.3 specifications and is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring it meets stringent industry and environmental standards.