S-95289A168 1/2"-13 x 3/4" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with Class 3A thread fit for precise, vibration-resistant fastening in demanding applications
• Excellent corrosion resistance provided by 18-8 stainless steel construction, ensuring long-term reliability in harsh environments
• Enhanced grip and seating through extended tip design, preventing component slippage and improving assembly security
• High torque capability with 1/4" hex drive, allowing for secure installation and removal without stripping
• Optimized mechanical strength with Rockwell B80 hardness, maintaining structural integrity under heavy loads
• Reliable coarse threading with UNC 1/2"-13 specification for quick assembly and reduced cross-threading risks
• Headless design advantage enabling flush mounting where space constraints or rotational clearance are concerns

Professional Applications & Engineering Value

This 1/2"-13 UNC Class 3A hex drive set screw delivers exceptional engineering value through its 18-8 stainless steel composition and precision manufacturing. The extended tip design provides concentrated contact pressure, effectively preventing relative movement between assembled components in high-vibration environments common in industrial machinery, automotive systems, and power transmission equipment. The coarse UNC threading ensures rapid installation while the Class 3A thread fit maintains tight tolerances for secure fastening. The headless configuration makes it ideal for applications requiring flush mounting in shafts, collars, and pulleys where protruding fastener heads would interfere with operation. This heavy-duty set screw addresses critical challenges of component slippage, corrosion-induced failure, and installation efficiency across multiple industrial sectors.

Specification Summary & Compliance

This precision set screw features 1/2"-13 UNC coarse threading with Class 3A thread fit for superior dimensional accuracy. The extended tip maintains tight tolerances with tip diameter of 0.343" (-0.009" to 0) and tip length of 0.26" (-0.005" to 0). Manufactured to meet ASME B18.3 specifications and compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring both performance reliability and regulatory adherence for global industrial applications.