S-97345A965 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 and 35,000 psi shear strength for reliable performance in high-stress applications.
• Precise alignment and smooth rotation enabled by the 2 1/2" shoulder with controlled diameter tolerance for consistent bearing surfaces.
• Secure and efficient installation with a 1/2" hex socket drive and knurled head, providing excellent torque transmission and grip.
• High-accuracy thread engagement through Class 3A UNC coarse threads, ensuring tight fit and vibration resistance.
• Compliance with major industry standards including ASME B18.3, guaranteeing dimensional consistency and interchangeability.
• Environmental and safety adherence with RoHS 3 and REACH compliance, meeting strict regulatory requirements for hazardous substances.

Professional Applications & Engineering Value

This 3/4"-10 UNC shoulder screw is engineered to address critical challenges in machinery assembly, pivoting mechanisms, and precision equipment. The 316 Stainless Steel material provides excellent resistance to corrosion from chemicals, moisture, and salt, making it suitable for food processing, marine, and chemical industry applications. The Class 3A thread fit and UNC coarse thread design ensure rapid assembly and high clamping force, reducing the risk of loosening under dynamic loads. The integral 2 1/2" shoulder acts as a precise axle or pivot, maintaining alignment in rotating parts like gears, pulleys, and linkages, while the knurled head and 1/2" hex drive facilitate quick, tool-friendly installation even in confined spaces. This combination of high tensile and shear strength supports heavy-duty operations, enhancing equipment reliability and reducing maintenance downtime.

Specification Summary & Compliance

This shoulder screw features a 3/4"-10 UNC coarse thread with Class 3A fit for precise, secure fastening. The shoulder diameter is 7/8" with a tolerance of -0.004" to -0.002", and the shoulder length is 2 1/2" with a tolerance of -0.005" to 0.005", ensuring dimensional accuracy. Manufactured to ASME B18.3 specifications, it guarantees consistency and interchangeability. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to environmental and safety regulations for hazardous substances.