S-92845A716 4-40 x 1/2" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-term reliability in harsh environments
• Precise thread engagement with Class 3A fit ensuring tight tolerances and secure fastening in critical applications
• Enhanced torque transmission through hex drive design providing superior driving power and reduced cam-out risk
• Optimized tip design with extended tip geometry for improved bite and permanent positioning in assemblies
• Exceptional mechanical strength with Rockwell B80 hardness maintaining structural integrity under load
• Industry-standard compatibility with UNC coarse threads for reliable performance across industrial equipment
• Regulatory compliance assurance meeting ASME B18.3 specifications with RoHS 3 and REACH environmental standards

Professional Applications & Engineering Value

This 4-40 UNC set screw delivers exceptional engineering value through its 18-8 stainless steel composition and precision Class 3A thread fit. The headless design with hex drive provides flush mounting in confined spaces while the extended tip ensures maximum contact surface for permanent component positioning. Ideal for industrial machinery, precision instruments, and automotive assemblies where vibration resistance and corrosion protection are critical. The coarse thread configuration prevents loosening under dynamic loads, making it perfect for high-stress applications requiring reliable set screw performance and dimensional stability.

Specification Summary & Compliance

Manufactured to exacting ASME B18.3 standards with Class 3A thread fit precision. Features include: 4-40 UNC right-hand coarse threads, 0.112" thread diameter, 1/2" length, and extended tip (0.03" length, 0.075" diameter). Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Material hardness certified at Rockwell B80 for consistent mechanical performance across production batches.