S-92991A660 1/2"-13 x 1" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with brass construction for extended service life in harsh environments
• Precise Class 3A thread fit ensures reliable, vibration-resistant fastening in critical assemblies
• 1/4" hex drive design provides maximum torque transmission and prevents tool slippage
• Rockwell B55 hardness delivers optimal balance of strength and machinability for repeated use
• Cup tip configuration creates positive seating and minimal surface damage on components
• Headless construction enables flush mounting in space-constrained applications
• Regulatory compliance with RoHS 3 and REACH ensures environmental responsibility

Professional Applications & Engineering Value

This brass set screw delivers exceptional performance in demanding industrial settings where corrosion resistance and precision threading are paramount. The 1/2"-13 UNC coarse thread with Class 3A fit provides superior engagement in soft materials and rapid installation, while the headless design and cup tip prevent interference in tight spaces and minimize component marring. Ideal for machinery, electrical enclosures, and precision instruments, these hex drive set screws maintain structural integrity in high-vibration environments. The Rockwell B55 hardness ensures the screw withstands repeated adjustments without deformation, making it perfect for maintenance-intensive applications requiring reliable, long-term fastening solutions.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with Class 3A thread tolerances for precision fit. Features 1/2"-13 UNC coarse threads with right-hand direction and 1" length. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial use.