S-90291A869 3/8"-16 ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Exceptional vibration resistance through Class 3A thread fit, maintaining secure positioning under dynamic loads
• Surface protection with non-marring nylon 6/6 plastic tip, preventing damage to expensive components
• Wide temperature tolerance (-50° to 250°F) for reliable performance across diverse operating conditions
• High-strength durability with Rockwell B80 hardness, ensuring long-term mechanical integrity
• Easy installation and removal using standard 3/16" hex key drive for efficient maintenance
• Industry-standard compliance meeting ASME B18.3 specifications for guaranteed interchangeability

Professional Applications & Engineering Value

This 3/8"-16 UNC hex headless set screw delivers critical engineering solutions for precision assembly applications where component security and surface protection are paramount. The 18-8 stainless steel construction provides excellent corrosion resistance in demanding environments, while the Class 3A thread fit ensures superior vibration resistance in machinery, automotive, and aerospace applications. The green nylon 6/6 plastic tip offers non-marring contact with sensitive surfaces, making it ideal for securing gears, pulleys, and collars without damaging expensive components. The coarse thread spacing facilitates quick installation while maintaining holding power, and the right-hand thread direction follows standard industrial practices for seamless integration into existing assemblies.

Specification Summary & Compliance

This precision set screw features 3/8"-16 UNC coarse thread with Class 3A thread fit for superior dimensional accuracy and interchangeability. Manufacturing complies with ASME B18.3 standards for consistent quality and performance. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting current environmental regulations for hazardous substances. Material specifications include 18-8 stainless steel with Rockwell B80 hardness and a nylon 6/6 plastic tip rated for temperatures from -50° to 250°F.