S-90291A189 8-32 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
• Precise thread engagement through Class 3A thread fit, ensuring reliable fastening and vibration resistance
• Non-marring surface protection with nylon 6/6 tip, preventing damage to delicate components
• Wide temperature tolerance from -50° to 250°F, maintaining performance in extreme conditions
• Enhanced torque transmission via 5/64" hex drive, allowing for secure installation with standard tools
• Coarse UNC threading for quick assembly and reduced cross-threading risks in high-volume applications
• Regulatory compliance with ASME B18.3, RoHS 3, and REACH, meeting global industrial standards

Professional Applications & Engineering Value

This 8-32 UNC set screw delivers exceptional engineering value in precision assembly systems where component alignment and surface integrity are critical. The combination of 18-8 stainless steel with Rockwell B80 hardness provides excellent strength-to-weight ratio while resisting chemical degradation. The green nylon 6/6 tip creates a secure, non-abrasive contact point that prevents slippage and protects finished surfaces from scoring during repeated adjustments. Particularly valuable in machinery manufacturing, automotive subsystems, and electronic enclosures, this hex headless set screw solves common challenges of maintaining positional accuracy under vibrational stress while meeting stringent industry compliance requirements.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with Class 3A thread fit for superior dimensional accuracy. Features UNC coarse threads (8-32 size) with right-hand orientation and 5/64" hex drive compatibility. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.