S-94758A033 1/2"-13 Flange Nuts

Flange Nuts

1238FA00005 Flange Nuts
1238FA00005 Flange Nuts

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

Part No.
Part No. 1238FA00005
Equivalent to mcmaster :
94758A033

Basic Information

System of Measurement Inch
Nut Type Flange, Hex

Dimension Parameters

Width 7/8"
Height 11/16"

Thread Parameters

Thread Type UNC
Thread Size 1/2"-13
Thread Direction Right Hand
Thread Spacing Coarse
Thread Fit Class 2B

Head Parameters

Drive Style External Hex
Hex Nut Profile Standard

Flange Parameters

Flange Diameter 1 1/8"
Flange Thickness 0.16"

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
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Key Features & Benefits at a Glance

  • Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh environments
  • Enhanced vibration resistance through the integrated flange design that eliminates the need for separate washers
  • Heavy-duty load distribution with 1-1/8" flange diameter providing wider bearing surface and preventing surface damage
  • Quick installation efficiency with standard external hex drive and coarse UNC threads for faster assembly in industrial settings
  • Precise thread engagement with Class 2B thread fit ensuring reliable, consistent fastening performance
  • Environmental compliance assurance meeting RoHS 3 and REACH standards for safe use across regulated industries
  • Dimensional reliability with standard hex nut profile and consistent 7/8" width for compatibility with standard tools

Professional Applications & Engineering Value

This heavy-duty flange nut delivers exceptional engineering value through its 18-8 stainless steel composition and integrated 1-1/8" flange design. The UNC coarse thread configuration with Class 2B thread fit ensures rapid installation while maintaining secure fastening in high-vibration environments common to industrial machinery, construction equipment, and transportation applications. The external hex drive provides superior torque transmission, while the broad flange surface distributes clamping force effectively, preventing joint loosening and material surface damage. This combination addresses critical industrial challenges including corrosion resistance in outdoor or chemical-exposed settings and vibration-induced failure in dynamic load conditions.

Specification Summary & Compliance

This 1/2"-13 UNC flange nut features precise Class 2B thread fit tolerances with standard external hex drive (7/8" width) and right-hand thread direction. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring regulatory compliance for industrial applications. The nut maintains dimensional accuracy with 11/16" height and 0.16" flange thickness for consistent performance across assembly operations.

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