S-98520A119 1/4"-20 Thumb Nuts

Key Features & Benefits at a Glance

• Vibration-resistant locking with nylon insert that maintains secure fastening under dynamic loads
• Quick hand-tightening capability through wing-shaped design for efficient assembly without tools
• Durable zinc alloy construction providing excellent corrosion resistance in industrial environments
• Reliable thread engagement with Class 2B fit ensuring consistent performance across applications
• High-temperature tolerance up to 225°F for stable operation in demanding conditions
• Standard UNC coarse threading (1/4"-20) for compatibility with common industrial components
• Optimized base diameter (7/16") for superior stability and load distribution

Professional Applications & Engineering Value

This nylon insert locking thumb nut solves critical industrial fastening challenges where vibration loosening compromises equipment reliability. The zinc alloy construction delivers exceptional corrosion resistance while the wing-type profile enables rapid installation and removal in confined spaces. Engineered with UNC coarse threads and Class 2B thread fit, it maintains precise tolerances for consistent performance in machinery, electrical enclosures, and assembly fixtures. The nylon locking insert creates permanent friction that resists rotational loosening, making it ideal for maintenance applications, adjustable components, and equipment subject to continuous motion or thermal cycling up to 225°F.

Specification Summary & Compliance

Manufactured to precise Class 2B thread fit standards with 1/4"-20 UNC coarse threads and right-hand direction. Features a 7/16" base diameter, 1-1/4" width, and 19/32" height. Complies with industry-standard dimensional requirements and suitable for applications requiring reliable mechanical fastening performance. The zinc alloy material and manufacturing process adhere to relevant industrial specifications for consistent quality and performance.