S-96177A180 1/4"-28 x 1 1/4" ASTM A276 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
- Exceptional corrosion resistance with black-oxide steel construction, extending service life in harsh industrial environments
- Precise thread alignment with Class 2B thread fit ensuring smooth engagement and reliable connections
- Maximum load distribution through fully threaded design, reducing stress concentration points
- Superior material strength meeting ASTM A276 specifications for demanding mechanical applications
- Environmental compliance assurance with RoHS 3 and REACH standards for global supply chain compatibility
- Optimized for fine-thread applications with 1/4"-28 UNF threading providing superior vibration resistance
- Versatile compatibility with standard inch-system components for simplified inventory management
Professional Applications & Engineering Value
This black-oxide steel coupling nut delivers critical performance advantages in demanding assembly scenarios where vibration resistance and environmental durability are paramount. The fully threaded 1/4"-28 UNF fine threading provides superior grip strength in applications requiring extended engagement length, while the Class 2B thread fit ensures consistent performance in high-cycle assembly operations. Engineers specify this ASTM A276 compliant coupling nut for precision machinery, industrial equipment, and automotive systems where reliable coupling connections must withstand mechanical stress and corrosive elements. The combination of fine thread spacing and right-hand threading makes it ideal for applications requiring precise tension control and anti-loosening properties.
Specification Summary & Compliance
Manufactured to exacting standards with Class 2B thread fit tolerances and UNF fine threading specifications. The 1/4"-28 thread size with 23/64" OD and 1 1/4" length ensures dimensional accuracy across production batches. Compliant with ASTM A276 material specifications and meets RoHS 3 (2015/863/EU) with exemption 6(a) for lead as an alloying element in steel, along with full REACH (EC 1907/2006) compliance for hazardous substance restrictions.
