S-94575A120 1/4"-28 MS51968-2; Fed. Spec. FF-N-836 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with cadmium yellow-chromate plating, extending service life in harsh industrial environments
• Reliable high-strength performance from Grade 5 steel, ensuring secure fastening under heavy loads and vibration
• Precise thread engagement with Class 2B fit and UNF fine threads, reducing the risk of cross-threading and improving assembly efficiency
• Standard external hex drive design for universal tool compatibility and straightforward installation with common wrenches
• Compliance with military and federal standards (MS51968-2, FF-N-836), guaranteeing consistent quality and traceability for critical applications
• Durable cadmium plating provides excellent wear resistance and maintains integrity in demanding mechanical settings

Professional Applications & Engineering Value

This 1/4"-28 UNF Grade 5 hex nut is engineered for demanding industrial and mechanical assemblies where reliability is non-negotiable. Constructed from cadmium yellow-chromate plated steel, it offers superior corrosion and abrasion resistance, making it ideal for outdoor equipment, automotive systems, and heavy machinery exposed to moisture, chemicals, or high-stress conditions. The fine UNF threads and Class 2B thread fit ensure tight, secure connections that resist loosening under vibration, reducing maintenance needs and downtime. With compliance to MS51968-2 and Fed. Spec. FF-N-836, this nut delivers consistent performance in aerospace, defense, and industrial projects requiring traceable, high-strength industrial fasteners.

Specification Summary & Compliance

This hex nut features a 1/4"-28 UNF fine thread with Class 2B thread fit for precise dimensional accuracy, a standard 7/16" width and 7/32" height profile, and right-hand thread direction. It meets MS51968-2 and Federal Specification FF-N-836 manufacturing standards, ensuring high quality and reliability. The cadmium yellow-chromate plating provides RoHS and REACH compliance for environmental safety, while the Grade 5 strength rating aligns with industry benchmarks for heavy-duty applications.