S-92001A329 1/4"-28 Thumb Nuts

Key Features & Benefits at a Glance

• Quick manual installation with wing-style head design for tool-free tightening and adjustment in tight spaces
• Superior corrosion resistance thanks to 18-8 stainless steel construction, ideal for humid or chemical environments
• Precise thread engagement with Class 2B fit ensuring reliable, vibration-resistant connections
• Fine thread compatibility with 1/4"-28 UNF specifications for secure fastening in precision assemblies
• Environmental compliance meeting RoHS 3 and REACH standards for safe use in regulated industries
• Optimized dimensions with 1 1/8" width and 5/8" height providing comfortable grip and stable seating
• Right-hand threading for standard directional tightening familiar to operators

Professional Applications & Engineering Value

This 18-8 stainless steel thumb nut delivers exceptional value in applications requiring frequent adjustments or tool-less maintenance. The wing-style profile enables rapid hand-tightening while the UNF fine thread with Class 2B fit maintains clamping force under vibration in machinery, electrical enclosures, and instrumentation. The corrosion-resistant properties make it suitable for food processing equipment, marine components, and outdoor installations where moisture exposure is common. Its 31/64" base diameter provides stable bearing surface distribution, preventing damage to connected materials during repeated use cycles.

Specification Summary & Compliance

Manufactured to UNF thread standards with Class 2B thread fit tolerance for precision engagement. The right-hand fine thread (1/4"-28) ensures compatibility with standard components. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming absence of restricted substances. Dimensions include 31/64" base diameter, 1 1/8" width, and 5/8" height per inch measurement system specifications.