S-97832A303 5/16"-24 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments.
• Precise alignment and reduced wear thanks to the Class 3A thread fit and standard shoulder fit for stable assembly.
• Enhanced torque transmission and grip from the knurled socket head with a 3/16" hex drive, preventing tool slippage.
• High mechanical strength with 70,000 psi tensile and 35,000 psi minimum shear strength for demanding applications.
• Reliable fine-thread engagement using 5/16"-24 UNF threads, ensuring secure fastening in precision components.
• Durable performance backed by Rockwell B55 hardness, maintaining integrity under repeated use.
• Broad compatibility and safety with compliance to ASME B18.3, RoHS 3, and REACH regulations.

Professional Applications & Engineering Value

This shoulder screw is engineered to address critical industrial challenges, such as misalignment and component wear in machinery. The 18-8 stainless steel material provides excellent corrosion resistance, making it suitable for applications in moist or chemical-exposed settings. With a 1-1/2" shoulder length and precise Class 3A thread fit, it ensures accurate positioning of parts like bearings, gears, and linkages, reducing vibration and extending equipment life. The knurled socket head and UNF fine thread design facilitate easy installation and high clamping force, ideal for industrial assembly and precision engineering where reliability is paramount.

Specification Summary & Compliance

This shoulder screw features a 5/16"-24 UNF fine thread with Class 3A fit for tight tolerances, and a shoulder diameter of 3/8" with tolerances from -0.004" to -0.002". Manufactured in accordance with ASME B18.3 specifications, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards, ensuring environmental safety and regulatory adherence for global industrial use.