S-90876A340 1/4"-20 Thumb Nuts

Key Features & Benefits at a Glance

• Enhanced manual tightening with wing-shaped head design for tool-free operation in tight spaces
• Superior corrosion resistance through durable steel construction for long-term reliability
• Quick installation and removal with coarse UNC threading that reduces assembly time
• Precise thread engagement with Class 2B fit ensuring consistent performance under vibration
• Optimized load distribution from 7/8" base diameter providing stable fastening
• Right-hand thread compatibility with standard industrial equipment and components
• Ergonomic handling with 1 1/2" width and 5/8" height for comfortable grip

Professional Applications & Engineering Value

This heavy-duty steel thumb nut solves critical assembly challenges in industrial maintenance, machinery, and equipment manufacturing. The 1/4"-20 UNC coarse thread design prevents cross-threading while enabling rapid manual adjustments - eliminating tool dependency in confined spaces. With its 7/8" base diameter and standard wing profile, it distributes clamping force evenly across surfaces, reducing point stress in vibration-prone applications. The right-hand thread direction maintains compatibility with existing inch-system components, making it ideal for quick modifications in conveyor systems, agricultural equipment, and production line fixtures where frequent disassembly is required.

Specification Summary & Compliance

Manufactured to Class 2B thread fit tolerances per ASME/ANSI standards with UNC coarse thread spacing (1/4"-20). Complies with inch measurement system requirements and industrial fastening specifications. Material composition meets standard industry requirements for steel fasteners in mechanical applications.