S-90866A140 3/8"-16 Thumb Nuts

Key Features & Benefits at a Glance

• Tool-free installation with wide 1 3/8" wing span for quick manual tightening and adjustment
• Superior corrosion resistance through zinc-plated steel construction for extended service life in harsh environments
• Reliable thread engagement with Class 2B thread fit ensuring consistent performance and vibration resistance
• Optimized for industrial applications featuring UNC coarse threads for faster assembly and reduced cross-threading risks
• Secure fastening solution with 11/16" base diameter providing stable mounting surface and load distribution
• Environmental compliance meeting RoHS 3 standards for safe use in regulated industries
• Standardized compatibility with right-hand UNC thread pattern for seamless integration with existing inch-system components

Professional Applications & Engineering Value

This zinc-plated steel thumb nut delivers exceptional value in applications requiring frequent adjustments or tool-free maintenance. The standard wing nut profile with 1 3/8" width provides maximum leverage for hand-tightening operations, eliminating the need for tools in assembly lines, machinery maintenance, and electrical enclosures. The UNC coarse thread design ensures rapid installation while maintaining secure fastening, particularly valuable in vibration-prone environments where Class 2B thread fit maintains clamping force under dynamic loads. The corrosion-resistant zinc plating protects against industrial atmospheres and moisture exposure, making these thumb nuts ideal for outdoor equipment, agricultural machinery, and manufacturing fixtures where durability and quick access are paramount.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2B thread fit tolerance for reliable performance. Features UNC 3/8"-16 coarse threads with right-hand direction conforming to industry standards. The 11/16" base diameter and 3/4" height ensure proper seating and load distribution. Compliant with RoHS 3 (2015/863/EU) environmental regulations, containing no restricted hazardous substances. Designed for use in inch-system applications requiring manual fastening solutions with consistent quality and regulatory compliance.