S-90268A418 5/16"-24 x 6" Coupling Nuts

Coupling Nuts

0992FA00021 Coupling Nuts
0992FA00021 Coupling Nuts

Image may differ from product. See technical specification for details.

Part No.
Part No. 0992FA00021
Equivalent to mcmaster :
90268A418

Basic Information

System of Measurement Inch
Nut Type Coupling, Hex

Dimension Parameters

Width 5/8"
Length 6"

Thread Parameters

Thread Type UNF
Thread Size 5/16"-24
Threading Partially Threaded
Thread Direction Right Hand
Thread Spacing Fine
Thread Fit Class 2B
Min. Thread Length 5/8"

Head Parameters

Drive Style External Hex
Coupling Nut Profile Extra Long

Material & Strength Parameters

Material 18-8 Stainless Steel

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (01/17/2022, 223 SVHC) Compliant
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Exceptional Connection Length: 6" extra long profile enables secure joining of threaded rods or studs over extended distances
  • Superior Corrosion Resistance: 18-8 stainless steel construction provides excellent durability in harsh industrial environments
  • Precision Thread Engagement: Class 2B thread fit ensures smooth assembly and reliable torque performance
  • Optimized Thread Design: 5/16"-24 UNF fine threading offers increased load distribution and vibration resistance
  • Enhanced Installation Efficiency: External hex drive design allows for standard wrenching tools and straightforward installation
  • Partial Threading Advantage: 5/8" minimum thread length provides flexibility for various connection requirements
  • Regulatory Compliance: Meets RoHS 3 and REACH standards for environmentally responsible manufacturing

Professional Applications & Engineering Value

This extra long coupling nut delivers critical performance in demanding industrial applications where extended connections between threaded components are required. Engineered from 18-8 stainless steel, it provides exceptional corrosion resistance for harsh environments including chemical processing, marine applications, and outdoor installations. The 5/16"-24 UNF fine threading with Class 2B fit ensures precise engagement and superior vibration resistance, making it ideal for machinery, structural frameworks, and precision equipment assemblies. The 6" length and partially threaded design offer flexibility for custom applications while maintaining structural integrity under heavy loads.

Specification Summary & Compliance

This coupling nut features 5/16"-24 UNF fine threading with Class 2B thread fit per UNF standards, ensuring precise dimensional accuracy and reliable performance. The external hex drive (5/8" width) accommodates standard wrenching tools, while the 6" length with 5/8" minimum thread length provides versatile connection capabilities. Manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, this inch-system coupling nut meets stringent industrial and environmental standards for professional use.

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