S-97832A262 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 alignment and secure pivoting ensured by the 3/4" diameter shoulder with a tight tolerance fit.
• High-strength threaded connection with Class 3A fit UNC coarse threads, providing superior vibration resistance and load distribution.
• Easy installation and removal using a standard 3/8" hex key, complemented by a knurled head for improved grip during manual adjustments.
• Broad industry compliance meeting ASME B18.3 specifications, RoHS 3, and REACH standards for safe and regulated use.
• Optimized for demanding applications with a 2-1/2" shoulder length providing ample unthreaded support for rotating parts and assemblies.

Professional Applications & Engineering Value

This precision shoulder screw is engineered to address critical alignment and wear challenges in mechanical assemblies. The 18-8 stainless steel material offers excellent corrosion resistance, making it suitable for food processing, marine, and chemical environments where moisture is a concern. The 3/4" shoulder diameter with controlled tolerances acts as a precise pivot or axle, reducing wear on mating parts and maintaining alignment in industrial machinery, conveyor systems, and robotic arms. The UNC coarse threads with a Class 3A fit ensure a secure, vibration-resistant connection, crucial for high-load scenarios. The knurled head and hex drive facilitate quick assembly and disassembly, enhancing maintenance efficiency. This screw is a reliable component for designers seeking durability, precision, and compliance in high-strength rotating or linear motion applications.

Specification Summary & Compliance

This shoulder screw features a 1/2"-13 UNC thread with a Class 3A fit for high precision. The shoulder diameter is 3/4" 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". It is manufactured in compliance with ASME B18.3 standards and is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant.