S-90268A425 7/16"-20 x 4" Coupling Nuts

Key Features & Benefits at a Glance

• Exceptional connection strength through extra long 4" design for maximum thread engagement in demanding applications
• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Precise thread alignment with Class 2B fine threading ensuring smooth assembly and reliable connections
• Easy installation and removal featuring external hex drive for standard wrench compatibility
• Versatile partial threading allowing for adjustable connection points and custom positioning
• Compliance assurance meeting RoHS 3 and REACH environmental standards for global industrial use
• Dimensional reliability with UNF fine thread specification maintaining consistent performance in inch system applications

Professional Applications & Engineering Value

This 7/16"-20 UNF extra long coupling nut delivers exceptional engineering value in applications requiring extended reach and robust connections. The 18-8 stainless steel construction provides excellent corrosion resistance, making it ideal for marine, chemical processing, and outdoor industrial equipment where environmental factors degrade ordinary fasteners. The 4" length and partially threaded design enable connections between threaded rods or bolts where standard nuts cannot reach, solving alignment and spacing challenges in structural frameworks, machinery assembly, and piping systems. The Class 2B fine threading ensures precise fit with mating components, reducing vibration-induced loosening while the external hex drive facilitates quick installation in confined spaces. This coupling nut maintains integrity under sustained loads, offering engineers a reliable solution for critical connections that demand both durability and dimensional precision.

Specification Summary & Compliance

This coupling nut features 7/16"-20 UNF fine threading with Class 2B thread fit tolerance for precise engagement, manufactured to inch system standards. The partially threaded right-hand configuration provides 5/8" minimum thread length with 4" overall length and 5/8" width across flats. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for industrial applications requiring verified material safety and environmental responsibility.