S-92311A408 3/4"-16 x 3/4" 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 extended service life.
• Exceptional holding power and vibration resistance ensured by the Class 3A thread fit and fine UNF thread profile.
• High-strength, non-slip fastening provided by the 3/8" hex drive, allowing for high torque application without head stripping.
• Secure and precise component positioning with the cup tip design, minimizing surface damage and preventing slippage.
• Reliable mechanical performance backed by a Rockwell B80 hardness, offering a durable balance of strength and toughness.
• Guaranteed dimensional consistency and interchangeability through compliance with the rigorous ASME B18.3 standard.
• Safe for use in regulated industries as it is fully compliant with RoHS 3 and REACH environmental directives.

Professional Applications & Engineering Value

This 3/4"-16 UNF set screw is engineered to solve critical challenges in machinery assembly, automotive systems, and precision equipment. The 18-8 stainless steel material provides excellent resistance to rust and corrosion, which is vital for components exposed to moisture, chemicals, or outdoor conditions. Its headless design and hex drive allow for installation in confined spaces where a protruding head is not feasible, while the fine thread and Class 3A fit create a tighter, more secure connection that resists loosening under vibration—a common failure point in dynamic industrial applications. The cup tip concentrates force on a small area, providing superior grip on shafts and collars without causing significant surface marring, making it an ideal choice for permanent or semi-permanent positioning tasks in high-stress environments.

Specification Summary & Compliance

This set screw features a 3/4"-16 UNF fine thread with a Class 3A thread fit for high precision and a secure fit. It is manufactured in accordance with the ASME B18.3 specification, ensuring dimensional accuracy and reliability. The product is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming it is free of hazardous substances and safe for use in various international markets.