S-96177A540 5/8"-18 x 1 1/4" ASTM A108 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
- Enhanced corrosion resistance with black-oxide steel coating, extending service life in demanding industrial environments.
- Precise thread engagement ensured by Class 2B fine thread fit, reducing the risk of cross-threading and improving assembly reliability.
- Full thread design allows for maximum adjustability and secure connections along the entire nut length.
- High-strength performance backed by ASTM A108 material standards, suitable for heavy-duty applications.
- Right-hand threading provides compatibility with standard assembly tools and processes, streamlining installation.
- Regulatory compliance with RoHS 3 and REACH, ensuring safe use in regulated industries without lead concerns under exemption 6(a).
- Optimized dimensions (55/64" OD, 1 1/4" length) offer a balanced profile for space-constrained setups while maintaining grip strength.
Professional Applications & Engineering Value
This 5/8"-18 UNF coupling nut is engineered to address common challenges in industrial assembly, such as vibration-induced loosening and environmental wear. The black-oxide steel construction provides a durable barrier against moisture and abrasion, crucial for machinery, automotive, and construction sectors where fastener integrity is paramount. Its fully threaded and fine thread design ensures uniform load distribution, minimizing stress concentrations that lead to fatigue failures. By complying with ASTM A108 and offering a Class 2B thread fit, it delivers consistent performance in coupling applications, enabling secure extension of rods or bolts without compromising on precision or durability.
Specification Summary & Compliance
This coupling nut adheres to UNF fine thread standards with a 5/8"-18 thread size and Class 2B thread fit for precise dimensional accuracy. It meets ASTM A108 specifications for material quality and is fully RoHS 3 (2015/863/EU) compliant under exemption 6(a) for lead in steel, alongside REACH (EC 1907/2006) compliance as of January 17, 2023, ensuring environmental and safety standards are upheld in industrial use.
