S-92311A407 3/4"-16 x 1/2" 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 from the cup point tip that bites into surfaces, preventing component slippage under vibration
• Precise, reliable thread engagement with a Class 3A UNF fine thread fit, ensuring minimal backlash and secure fastening
• High-torque installation capability via the 3/8" hex drive, allowing for secure tightening without stripping
• Enhanced mechanical durability with a Rockwell B80 hardness rating, resisting deformation under heavy loads
• Space-saving headless design for applications where flush mounting and unobstructed rotation are required
• Guaranteed quality and safety through compliance with ASME B18.3, RoHS 3, and REACH standards

Professional Applications & Engineering Value

This 3/4"-16 UNF Class 3A set screw is engineered to solve critical challenges in industrial assembly and machinery. The 18-8 stainless steel material provides excellent resistance to rust and corrosion, making it suitable for use in moist or chemically aggressive environments, such as food processing equipment, marine applications, and outdoor machinery. The fine thread and Class 3A fit deliver tighter tolerances and superior clamping force compared to coarse threads, reducing the risk of loosening in high-vibration settings like motors, pulleys, and gear assemblies. The headless design with a hex drive allows for compact installation in confined spaces, while the cup point creates a firm bite into shafts and collars, ensuring permanent positioning without marring the surface excessively. This combination of features makes it an ideal choice for precision engineering applications requiring reliable, long-term fastening solutions.

Specification Summary & Compliance

This set screw adheres to ASME B18.3 specifications, with a Class 3A thread fit for high-precision applications and a UNF fine thread (3/4"-16) for secure engagement. It is manufactured from 18-8 Stainless Steel and heat-treated to a Rockwell B80 hardness for optimal strength. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety standards for industrial use.