S-97832A267 1/2"-13 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and reducing maintenance costs.
• High tensile strength of 70,000 psi ensures reliable performance under heavy loads and prevents fastener failure in demanding applications.
• Precise Class 3A thread fit provides superior engagement and vibration resistance, enhancing assembly integrity and longevity.
• Knurled socket head with hex drive offers secure, non-slip tool engagement for efficient installation and removal, even in tight spaces.
• Coarse 1/2"-13 UNC thread enables quick assembly and disassembly, saving time in production and maintenance cycles.
• Durable Rockwell B55 hardness maintains structural integrity and wear resistance over repeated use, extending service life.
• Compliance with ASME B18.3, RoHS, and REACH guarantees quality, safety, and environmental responsibility for global supply chains.

Professional Applications & Engineering Value

This socket head shoulder screw is engineered to address common industrial challenges, such as misalignment and component wear in machinery. The 18-8 stainless steel material provides excellent resistance to corrosion and oxidation, making it suitable for applications in automotive assembly, conveyor systems, and precision equipment. The 3/4" shoulder diameter with tight tolerances ensures precise positioning of moving parts, reducing friction and preventing premature failure. Combined with a coarse UNC thread and Class 3A fit, it offers reliable fastening in high-vibration environments, streamlining maintenance and improving operational efficiency. This design is ideal for industrial shoulder screws used in pivots, gears, and linkages, where durability and accuracy are critical.

Specification Summary & Compliance

This shoulder screw features a 1/2"-13 UNC coarse thread with Class 3A thread fit for high precision, along with a shoulder diameter of 3/4" (tolerance: -0.004" to -0.002") and shoulder length of 1 1/4" (tolerance: -0.005" to 0.005"). It meets ASME B18.3 specifications for dimensional consistency and performance. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to environmental and safety standards for industrial use.