S-90291A845 1-72 ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior vibration resistance with the green nylon 6/6 plastic tip that locks securely in place, preventing loosening under dynamic loads
• Excellent corrosion resistance provided by 18-8 stainless steel construction, ideal for harsh industrial environments
• Precise thread engagement with Class 3A fit ensuring tight tolerances and reliable fastening in fine-thread applications
• High durability with Rockwell B80 hardness maintaining structural integrity under repeated use and stress
• Wide temperature compatibility with nylon tip performing reliably from -50° to 250°F (-46° to 121°C)
• Secure installation using the .035" hex drive, allowing for high torque application in confined spaces
• Regulatory compliance meeting ASME B18.3 specifications and environmental standards including RoHS 3 and REACH

Professional Applications & Engineering Value

This 1-72 UNF fine thread set screw with nylon tip delivers critical engineering solutions for applications requiring permanent, vibration-resistant fastening. The 18-8 stainless steel construction provides exceptional corrosion resistance, making it suitable for harsh environments including marine, chemical processing, and outdoor equipment. The Class 3A thread fit ensures precise engagement in fine-thread applications where maximum holding power is essential. The headless design with hex drive allows for flush mounting in confined spaces while the green nylon 6/6 tip creates a permanent locking action that withstands intense vibration in machinery, automotive components, and precision instruments. This combination of materials and precision manufacturing addresses common industrial challenges of component loosening, corrosion failure, and space constraints.

Specification Summary & Compliance

This set screw features 1-72 UNF fine threads with Class 3A fit for precision tolerance, manufactured from 18-8 stainless steel with Rockwell B80 hardness. The product complies with ASME B18.3 specifications for set screws and meets environmental regulations including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) standards. The right-hand thread direction and .035" hex drive provide standardized installation across industrial applications.