S-97345A630 3/8"-24 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial and marine environments.
• High-strength performance offering 70,000 psi tensile and 35,000 psi shear strength for reliable load-bearing applications.
• Precision Class 3A thread fit ensures tight, secure connections with minimal risk of loosening in high-vibration settings.
• Convenient installation and removal with a hex socket drive and knurled head for enhanced grip and torque application.
• Accurate shoulder positioning with a 1/2" diameter and controlled tolerances for precise component alignment.
• Compliance with major standards including ASME B18.3, RoHS 3, and REACH for guaranteed quality and environmental safety.
• Durable fine UNF threads provide increased engagement and resistance to stripping in demanding applications.

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw is engineered to address critical challenges in precision assembly and machinery. The UNF Class 3A thread and fine thread spacing deliver superior clamping force and vibration resistance, preventing joint failure in dynamic systems. Its 1/2" shoulder diameter with tight tolerances acts as a precise pivot or spacer, ensuring accurate alignment in rotating assemblies, linkages, and bearing mounts. The hex socket drive and knurled head facilitate secure tool engagement, reducing installation time and slippage risks. Ideal for industrial fasteners in automotive, aerospace, and food processing equipment, it combines high tensile strength with excellent corrosion resistance, extending service life in aggressive environments while meeting stringent ASME B18.3 and regulatory standards.

Specification Summary & Compliance

This shoulder screw features a 3/8"-24 UNF fine thread with Class 3A fit for high-precision applications, ensuring minimal clearance and reliable performance. The shoulder diameter is manufactured to a tolerance of -0.004" to -0.002", and the shoulder length to -0.005" to 0.005", guaranteeing consistent dimensional accuracy. It complies with ASME B18.3 specifications for dimensional and mechanical requirements, and is verified as RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming adherence to environmental and safety regulations without restricted substances.