S-90202A224 3/8"-24 x 1" ASTM A582 Coupling Nuts

Coupling Nuts

0991FA00039 Coupling Nuts
0991FA00039 Coupling Nuts

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

Part No.
Part No. 0991FA00039
Equivalent to mcmaster :
90202A224

Basic Information

System of Measurement Inch
Nut Type Coupling
Specifications Met ASTM A582

Dimension Parameters

Length 1"
OD 31/64"

Thread Parameters

Thread Type UNF
Thread Size 3/8"-24
Threading Fully Threaded
Thread Direction Right Hand
Thread Spacing Fine
Thread Fit Class 2B

Head Parameters

Coupling Nut Profile Standard

Material & Strength Parameters

Material 18-8 Stainless Steel

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (01/17/2023, 233 SVHC) Compliant
Technical Drawings No drawings available at the moment, will be launched soon
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Key Features & Benefits at a Glance

  • Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and extended service life.
  • Precise and reliable connections ensured by the Class 2B thread fit, minimizing the risk of cross-threading and assembly issues.
  • Excellent vibration resistance from the UNF fine threading, providing a secure, tight hold in dynamic applications.
  • Full thread engagement along the entire 1" length offers maximum strength and load distribution.
  • Guaranteed material quality and performance through compliance with the ASTM A582 specification.
  • Simplified global sourcing and compliance by meeting RoHS 3 and REACH environmental regulations.
  • Broad compatibility with standard inch-series components due to the right-hand, standard profile design.

Professional Applications & Engineering Value

This 3/8"-24 UNF coupling nut is engineered to solve critical challenges in assembly and longevity. The 18-8 Stainless Steel material provides excellent resistance to rust and corrosion, making it a dependable choice for industrial applications exposed to moisture, chemicals, or outdoor elements. The fully threaded design and Class 2B thread fit ensure a precise, snug connection that withstands vibration and thermal cycling, preventing loosening in machinery, automotive, and construction assemblies. Its fine threading (UNF) offers a higher number of threads per inch compared to coarse threads, resulting in a stronger, more leak-resistant joint for pressurized systems. This nut delivers consistent performance and reduces maintenance needs, providing long-term engineering value.

Specification Summary & Compliance

This coupling nut adheres to precise dimensional standards, featuring a Class 2B thread fit for unified inch screws and a UNF (Unified National Fine) thread type with a size of 3/8"-24. It is manufactured from 18-8 Stainless Steel in compliance with the ASTM A582 specification for alloy steel bars. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring it meets stringent environmental and safety regulations for industrial use.

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