S-97832A265 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 industrial environments and reducing maintenance costs.
• Exceptional mechanical strength offering 70,000 psi tensile strength and 35,000 psi minimum shear strength for reliable performance under high-stress applications.
• Precise alignment and smooth rotation ensured by the 3/4" diameter shoulder with tight tolerances, minimizing wear on mating components.
• High-torque installation capability via the knurled socket head and 3/8" hex drive, providing a secure grip and reducing the risk of stripping.
• Reliable thread engagement with Class 3A fit and 1/2"-13 UNC coarse thread, ensuring consistent clamping force and vibration resistance.
• Compliance with industry standards including ASME B18.3, guaranteeing dimensional accuracy and interchangeability in assemblies.
• Environmentally safe usage with RoHS 3 and REACH compliance, meeting global regulatory requirements for hazardous substances.

Professional Applications & Engineering Value

This shoulder screw is engineered to address critical alignment and load-bearing challenges in industrial applications. The 18-8 stainless steel material provides excellent corrosion resistance, making it suitable for machinery exposed to moisture, chemicals, or outdoor conditions. The 3/4" shoulder diameter acts as a precise pivot or axle, reducing friction and wear in moving parts like linkages, gears, and bearings. The knurled socket head with a 3/8" hex drive ensures efficient torque transmission during installation, preventing slippage and damage in high-torque scenarios. With a Class 3A thread fit and coarse UNC thread, it offers robust fastening in assemblies subject to vibrations, enhancing operational reliability and longevity in automotive, aerospace, and heavy equipment sectors.

Specification Summary & Compliance

This shoulder screw features precise dimensional tolerances, including a shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of -0.005" to 0.005". The thread fit adheres to Class 3A for high precision, and the thread type is 1/2"-13 UNC coarse. It is manufactured in compliance with ASME B18.3 standards, ensuring consistent quality and performance. Additionally, the product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental compliance for global industrial use.