S-95922A111 1/4"-20 Flange Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through precision-engineered serrations that bite into mating surfaces, preventing loosening under dynamic loads.
• Exceptional strength for heavy-duty applications with Grade 8 classification, ensuring reliable performance in high-stress environments.
• Enhanced corrosion protection from the black-phosphate steel coating, extending service life in harsh industrial conditions.
• Integrated flange design distributes clamping force over a wider area (19/32" diameter), reducing surface damage and improving joint stability.
• Easy installation and removal with standard external hex drive (7/16" width), compatible with common tools for efficient maintenance.
• Secure coarse thread engagement with 1/4"-20 UNC Class 2B threads, providing rapid assembly and reliable fastening in various materials.
• Compliance with global environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industries.

Professional Applications & Engineering Value

This Grade 8 Black-Phosphate Steel Flange Locknut delivers critical engineering solutions where vibration-induced failure is a primary concern. The serrated locking mechanism creates permanent resistance to rotational loosening, making it ideal for heavy machinery, automotive assemblies, and structural frameworks subjected to constant motion or impact loads. The black-phosphate surface treatment provides a durable barrier against oxidation and chemical exposure, while the integrated flange eliminates the need for separate washers, streamlining assembly and reducing component count. With UNC coarse threads ensuring quick installation and Class 2B thread fit maintaining precision, this locknut offers reliable performance in demanding industrial applications where safety and durability are paramount.

Specification Summary & Compliance

Manufactured to precise dimensional standards including 1/4"-20 UNC coarse threads with Class 2B thread fit for consistent engagement. The nut features a 19/32" flange diameter and 7/16" width for standardized tool compatibility. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility. Meets Grade 8 strength requirements for high-performance mechanical applications.