S-94859A111 1/4"-20 Square Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with black zinc-plating that protects against rust and extends service life in harsh environments
• Reliable coarse thread performance with UNC 1/4"-20 threading that resists loosening under vibration and enables quick assembly
• Precise Class 2B thread fit ensuring smooth engagement with mating components and reducing cross-threading risks
• External square drive design providing excellent tool grip for secure tightening with wrenches in confined spaces
• Heavy-duty steel construction delivering high tensile strength and durability for demanding industrial applications
• Compliance with environmental regulations through RoHS 3 and REACH compliance for safe use in regulated industries
• Standard inch dimensions (7/16" width, 3/16" height) ensuring compatibility with existing equipment and replacement parts

Professional Applications & Engineering Value

This 1/4"-20 UNC square nut with black zinc-plated steel construction addresses critical industrial fastening challenges where corrosion resistance and vibration stability are paramount. The coarse thread design maintains secure connections in high-vibration equipment like machinery frames, automotive assemblies, and construction equipment, while the external square drive allows for positive wrench engagement in tight spaces where socket access is limited. The Class 2B thread fit ensures consistent performance with standard bolts, reducing installation time and preventing thread damage during repeated maintenance cycles. Ideal for manufacturing, metal fabrication, and heavy equipment applications, this industrial-grade fastener provides long-term reliability in environments exposed to moisture, chemicals, and mechanical stress.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2B thread fit and UNC coarse thread specifications (1/4"-20). Complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for hazardous substance restrictions. Features right-hand thread direction and external square drive style with dimensions of 7/16" width and 3/16" height in inch measurement system.