S-97832A362 1/2"-13 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and extended service life.
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under high stress.
• Precise and secure assembly ensured by the Class 3A thread fit, minimizing the risk of loosening in vibrating applications.
• Easy installation and removal with the 5/16" hex socket drive and knurled head, providing excellent tool grip and reducing slippage.
• Robust shear resistance with a minimum shear strength of 35,000 psi, suitable for heavy-duty mechanical linkages and pivots.
• Guaranteed dimensional accuracy and interchangeability through compliance with the stringent ASME B18.3 standard.
• Safe for regulated industries as it meets RoHS 3 and REACH environmental compliance standards.

Professional Applications & Engineering Value

This shoulder screw is engineered to provide a precise shoulder diameter and length, acting as a reliable axle or pivot point in assemblies. The 1/2"-13 UNC coarse thread and Class 3A thread fit ensure fast assembly and high resistance to vibrational loosening in machinery. Manufactured from 18-8 Stainless Steel, it offers excellent corrosion resistance, making it ideal for food processing, marine, and chemical industry applications where durability is critical. The 5/16" hex drive combined with the knurled head allows for secure torque application, reducing the risk of tool cam-out and damage during maintenance. Its high tensile and shear strength supports demanding uses in robotics, conveyor systems, and precision equipment, ensuring long-term operational reliability and reduced downtime.

Specification Summary & Compliance

This shoulder screw features a 1/2"-13 UNC coarse thread with a Class 3A fit for precise thread engagement. The shoulder diameter is 5/8" with a tight tolerance of -0.004" to -0.002", and the shoulder length is 1 7/8" with a tolerance of -0.005" to 0.005" for accurate positioning. It is manufactured in accordance with ASME B18.3 specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safety and consistency for industrial use.