S-92311A312 1-72 x 1/4" 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 long-term reliability.
• Exceptional vibration resistance due to the cup point design, providing a secure, non-slip grip on shafts and components.
• High-strength threading with a Class 3A fit ensures precise, tight tolerances for reliable fastening in critical assemblies.
• Space-saving headless design allows for flush mounting in applications where protrusion is not permissible.
• Optimized torque transmission from the 0.035" hex drive, reducing the risk of tool slippage and head stripping during installation.
• Enhanced durability with a Rockwell B80 hardness, offering excellent resistance to wear and deformation under load.
• Guaranteed compliance and safety, meeting ASME B18.3 specifications and being fully RoHS 3 and REACH compliant.

Professional Applications & Engineering Value

This 1-72 UNF set screw is engineered to address common industrial challenges such as component slippage and corrosion-induced failure. The 18-8 Stainless Steel material provides excellent resistance to rust and oxidation, making it suitable for applications in moist or chemically aggressive environments, including machinery, automotive assemblies, and electronic enclosures. The fine thread and Class 3A thread fit ensure a tight, precise connection that maintains integrity under vibration, reducing the need for frequent retightening. The headless hex drive and cup point design allow for a low-profile installation while maximizing gripping force on shafts and collars, preventing rotational movement and enhancing the overall stability of the assembly. This combination of features delivers reliable performance in precision engineering and maintenance tasks.

Specification Summary & Compliance

This set screw adheres to ASME B18.3 standards, with a Class 3A thread fit for high precision in UNF fine threads. It is manufactured from 18-8 Stainless Steel and features a Rockwell B80 hardness for consistent mechanical performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety requirements for industrial use.