S-90866A130 5/16"-24 Thumb Nuts

Key Features & Benefits at a Glance

• Effortless hand-tightening with standard wing profile for quick assembly and disassembly without tools
• Superior corrosion resistance through zinc-plated steel construction, extending service life in demanding environments
• Precise thread engagement with Class 2B fit and 5/16"-24 UNF fine threads ensuring vibration-resistant connections
• Optimized grip surface featuring 1 1/4" width and 5/8" height for secure handling even with gloves
• Reliable right-hand threading following industry standards for consistent installation across equipment
• Stable mounting base with 9/16" diameter distributing load evenly to prevent surface damage
• Environmental compliance meeting RoHS 3 standards for safe use in regulated industrial applications

Professional Applications & Engineering Value

This zinc-plated steel thumb nut delivers exceptional value in applications requiring frequent adjustments or limited tool access. The UNF fine threading (5/16"-24) maintains tighter clamping force under vibration compared to coarse threads, while the Class 2B thread fit ensures consistent engagement with mating components. The standard wing profile enables rapid hand-tightening in electrical enclosures, machinery guards, and production jigs where tool clearance is restricted. The corrosion-resistant zinc plating protects against industrial atmospheres, making it ideal for OEM equipment, maintenance fixtures, and assembly lines requiring durable, hand-tightened fastening solutions.

Specification Summary & Compliance

Manufactured to inch system standards with 5/16"-24 UNF fine threads and Class 2B thread fit for precise tolerance. Features right-hand threading, 9/16" base diameter, 1 1/4" width, and 5/8" height. Complies with RoHS 3 (2015/863/EU) environmental directives and manufactured under quality-controlled processes for reliable performance in industrial fastening applications.