S-90465A321 1/2"-20 x 1 1/4" Coupling Nuts
Coupling Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance from durable brass construction, ideal for humid or chemically aggressive environments
- Precise thread engagement with Class 2B fine threading ensures secure, vibration-resistant connections
- Maximum torque transmission through external hex drive design for easy installation with standard tools
- Full-length threading provides consistent engagement strength across the entire 1-1/4" length
- Regulatory compliance with REACH and RoHS 3 standards for safe use in regulated industries
- Reliable performance in demanding applications due to UNF thread standard and brass material durability
- Versatile connectivity with right-hand threading compatible with standard UNF 1/2"-20 threaded components
Professional Applications & Engineering Value
This brass coupling nut delivers exceptional engineering value in applications where corrosion resistance and reliable thread engagement are critical. The UNF fine threading (1/2"-20) combined with Class 2B thread fit ensures precise mating with threaded rods or studs, preventing loosening under vibration while maintaining alignment in assembly systems. The external hex drive allows for high-torque installation without damaging the nut's integrity. Particularly valuable in plumbing systems, marine equipment, and electrical enclosures where brass's natural anti-galling properties and non-sparking characteristics enhance safety and longevity. The fully threaded design accommodates various connection depths while the standard coupling nut profile ensures compatibility with existing industrial components.
Specification Summary & Compliance
This coupling nut features 1/2"-20 UNF fine threading with Class 2B thread fit for precision engagement, measuring 1-1/4" in length and 5/8" across flats. Manufactured from brass material with external hex drive and right-hand thread direction. Fully compliant with REACH (EC 1907/2006) regarding SVHC substances and RoHS 3 (2015/863/EU) with exemption 6(c) for lead in copper alloys, meeting international regulatory standards for industrial components.
