S-97345A954 3/4"-10 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and extended service life.
• Exceptional mechanical strength offering 70,000 psi tensile strength and 35,000 psi shear strength for demanding, high-load applications.
• Precise and reliable thread engagement with Class 3A fit UNC coarse threads, ensuring secure fastening and vibration resistance.
• Easy installation and removal facilitated by the 1/2" hex socket drive and knurled head for improved grip and torque application.
• Accurate alignment and spacing provided by the precisely machined shoulder with standard fit, maintaining component position.
• Compliance with major industry standards including ASME B18.3, RoHS 3, and REACH, guaranteeing quality and regulatory adherence.
• Durable performance backed by Rockwell B79 hardness, resisting wear and deformation under stress.

Professional Applications & Engineering Value

This 3/4"-10 UNC shoulder screw is engineered to address critical challenges in precision machinery, automation systems, and heavy-duty assemblies. The 316 stainless steel material provides excellent resistance to corrosion and chemical exposure, making it suitable for food processing, marine, and chemical industry applications. The Class 3A thread fit and coarse UNC thread type ensure quick assembly and high vibration resistance, reducing maintenance needs. The hex socket head with a knurled texture allows for efficient torque transfer in confined spaces, while the shoulder diameter and length with tight tolerances offer precise locating and pivoting functions, minimizing misalignment and component wear. This design is ideal for securing rotating parts, guiding linear motion, and providing reliable pivots in jigs and fixtures.

Specification Summary & Compliance

This shoulder screw adheres to ASME B18.3 specifications, with a Class 3A thread fit for high-precision applications. Key dimensional tolerances include a shoulder diameter of 7/8" (tolerance: -0.004" to -0.002") and shoulder length of 1 1/2" (tolerance: -0.005" to 0.005"). The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for industrial use.