S-96177A240 5/16"-18 x 1 1/4" ASTM A108 Coupling Nuts

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with black-oxide steel finish, ideal for harsh industrial environments.
• Superior load distribution due to fully threaded UNC coarse spacing, reducing stress concentration.
• Reliable thread engagement with Class 2B fit, ensuring smooth assembly and vibration resistance.
• High tensile strength from ASTM A108 compliant steel, supporting heavy-duty applications.
• Broad compatibility with 5/16"-18 UNC right-hand threaded rods and bolts, simplifying inventory.
• Environmental compliance meeting RoHS 3 and REACH regulations, safe for regulated industries.
• Durable construction with standard 1 1/4" length and 27/64" OD, providing long service life.

Professional Applications & Engineering Value

This 5/16"-18 UNC coupling nut is engineered to address common challenges in industrial assembly, such as connecting threaded rods in construction, machinery, and automotive systems. The black-oxide steel material offers excellent protection against rust and wear, extending component lifespan in humid or corrosive settings. With fully threaded coarse spacing and Class 2B thread fit, it ensures quick, secure installations without cross-threading, minimizing downtime. Ideal for applications requiring robust, corrosion-resistant fasteners, this nut meets ASTM A108 standards, delivering consistent performance in high-stress environments where reliability is critical.

Specification Summary & Compliance

This coupling nut adheres to precise dimensional tolerances, including Class 2B thread fit and UNC coarse thread specifications. It conforms to ASTM A108 for material quality and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial use.