S-92088A143 8-32 Thumb Nuts

Key Features & Benefits at a Glance

• Enhanced Grip & Fast Assembly: Knurled round head design ensures secure, tool-free tightening and loosening, reducing installation time in maintenance and production lines.
• Superior Corrosion Resistance: Made from 18-8 Stainless Steel with Black Oxide coating, offering reliable performance in humid, chemical, or outdoor environments without rusting.
• Precision Thread Fit: Class 2B UNC coarse threads provide smooth engagement and consistent clamping force, minimizing cross-threading risks in repetitive applications.
• Optimized Load Distribution: 5/16" collar diameter and 1/2" collar height increase bearing surface area, enhancing stability and vibration resistance in assembled components.
• Partial Threading for Flexibility: Partially threaded design allows for adjustable positioning and secure fastening on shafts or studs without full-length threading.
• Regulatory Compliance Assurance: Fully compliant with REACH and RoHS 3 standards, ensuring safe use in regulated industries and global supply chains.
• Right-Hand Thread Convenience: Standard right-hand threading ensures compatibility with common 8-32 UNC bolts and screws, simplifying inventory management.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, this 8-32 UNC Thumb Nut combines the durability of Black Oxide 18-8 Stainless Steel with a user-centric knurled round head to address common assembly challenges. The partially threaded coarse UNC profile and Class 2B thread fit enable quick, secure fastening in machinery, electrical enclosures, and conveyor systems, where tool access is limited. Its corrosion-resistant material withstands exposure to oils, moisture, and mild chemicals, reducing maintenance downtime. The 5/16" collar provides added stability, preventing loosening under vibration—ideal for industrial thumb nut applications in automotive, packaging, and HVAC equipment that require repeated adjustments without compromising thread integrity.

Specification Summary & Compliance

This thumb nut adheres to UNC coarse thread standards with a size of 8-32 and Class 2B thread fit for consistent dimensional accuracy. The collar diameter is 5/16", collar height 1/2", and thread depth 1/4", ensuring precise engagement. It is manufactured in compliance with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) directives, guaranteeing the absence of restricted hazardous substances. The right-hand thread direction and inch system measurements support seamless integration into North American and international industrial assemblies.