S-94758A625 5/16"-24 Flange Nuts

Flange Nuts

1238FA00016 Flange Nuts
1238FA00016 Flange Nuts

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

Part No.
Part No. 1238FA00016
Equivalent to mcmaster :
94758A625

Basic Information

System of Measurement Inch
Nut Type Flange, Hex

Dimension Parameters

Width 9/16"
Height 3/8"

Thread Parameters

Thread Type UNF
Thread Size 5/16"-24
Thread Direction Right Hand
Thread Spacing Fine
Thread Fit Class 2B

Head Parameters

Drive Style External Hex
Hex Nut Profile Standard

Flange Parameters

Flange Diameter 3/4"
Flange Thickness 0.09"

Material & Strength Parameters

Material 18-8 Stainless Steel

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (07/08/2021, 219 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

  • Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
  • Integrated flange eliminates need for a separate washer, saving assembly time and reducing part count.
  • Precise Class 2B thread fit ensures smooth engagement and consistent clamping force in fine-thread applications.
  • 3/4" flange diameter provides a larger bearing surface for enhanced load distribution and joint stability.
  • External hex drive design allows for standard tool compatibility and high-torque installation.
  • Compliance with RoHS 3 and REACH regulations guarantees environmental safety and global material standards.
  • Right-hand UNF fine threads (5/16"-24) offer excellent vibration resistance and secure fastening in dynamic applications.

Professional Applications & Engineering Value

This 5/16"-24 UNF flange nut is engineered to address common industrial challenges such as vibration loosening and corrosion-induced failure. The 18-8 stainless steel material provides excellent resistance to rust and chemical exposure, making it suitable for outdoor, marine, and chemical processing equipment. The integrated flange distributes clamping force over a wider area, reducing surface pressure and preventing damage to softer materials. Combined with Class 2B fine threads, this nut maintains a secure hold in high-vibration environments like automotive assemblies, machinery, and electrical enclosures, ensuring long-term operational integrity and reduced maintenance needs.

Specification Summary & Compliance

This flange nut features a 5/16"-24 UNF fine thread with a Class 2B thread fit for consistent precision. The flange diameter is 3/4" with a thickness of 0.09", and it uses a standard external hex drive for easy installation. The product is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety standards for industrial use.

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