S-92311A276 4-48 x 5/16" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and extended service life
• Precise, reliable fastening ensured by Class 3A thread fit, minimizing backlash and maintaining secure connections
• High-strength performance from Rockwell B80 hardness, providing excellent resistance to wear and deformation
• Easy installation and removal with the compact 0.050" hex drive, allowing access in confined spaces
• Secure, non-slip grip from the cup tip design, preventing component movement in dynamic applications
• Industry-standard compatibility through compliance with ASME B18.3, ensuring interchangeability and reliability
• Environmental and safety compliance meeting RoHS 3 and REACH regulations, suitable for global markets

Professional Applications & Engineering Value

This 4-48 UNF fine thread set screw is engineered to address critical challenges in precision assembly and machinery. The 18-8 stainless steel material offers excellent resistance to rust and oxidation, making it ideal for applications in medical devices, electronics, and outdoor equipment where moisture exposure is a concern. The headless design and 0.050" hex drive facilitate flush mounting and tool access in tight spaces, while the Class 3A thread fit and fine thread spacing provide superior clamping force and vibration resistance. These features collectively enhance the reliability of assemblies, reduce maintenance needs, and extend the lifespan of components in demanding industrial fastening scenarios.

Specification Summary & Compliance

This set screw features a 4-48 UNF fine thread with Class 3A thread fit for high precision, a length of 5/16", and a cup tip for secure fastening. It is manufactured in accordance with ASME B18.3 standards and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability.