S-91005A106 M16 Flange Nuts

Flange Nuts

1237FA00013 Flange Nuts
1237FA00013 Flange Nuts

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

Part No.
Part No. 1237FA00013
Equivalent to mcmaster :
91005A106

Basic Information

System of Measurement Metric
Nut Type Flange, Hex

Dimension Parameters

Width 24 mm
Height 21 mm

Thread Parameters

Thread Type Metric
Thread Size M16
Thread Direction Right Hand
Thread Pitch 2 mm
Thread Spacing Coarse
Thread Fit Class 6G

Head Parameters

Drive Style External Hex
Hex Nut Profile Standard

Flange Parameters

Flange Diameter 33 mm
Flange Thickness 5 mm

Material & Strength Parameters

Material Zinc-Plated Steel

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) compliant with exemption 6(a)-I - Lead as an alloying element in steel
REACH REACH (EC 1907/2006) (06/10/2022, 224 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 load distribution with a 33mm flange diameter and 5mm thickness to prevent surface damage and maintain joint integrity under high stress
  • Enhanced corrosion resistance through zinc plating, extending service life in demanding industrial environments
  • Precision threading with Class 6G fit ensures smooth installation and reliable, vibration-resistant connections
  • Time-saving assembly using standard external hex drive for easy tightening with common tools
  • Heavy-duty performance with coarse 2mm pitch threads for quick engagement and strong holding power in structural applications
  • Environmental compliance meeting RoHS 3 and REACH standards for safe, sustainable use in regulated industries
  • Metric system compatibility for seamless integration with international machinery and equipment designs

Professional Applications & Engineering Value

This M16 flange nut delivers exceptional engineering value by solving critical fastening challenges in heavy machinery, construction, and automotive assemblies. The zinc-plated steel construction provides durable protection against corrosion and wear, while the integrated 33mm flange eliminates the need for separate washers, reducing assembly time and minimizing loosening from vibration. With its Class 6G thread fit and coarse 2mm pitch, it ensures rapid installation and maintains clamp force in high-vibration environments where reliability is paramount. The external hex drive allows for high-torque application using standard wrenches, making it ideal for maintenance and production lines requiring efficient, secure connections.

Specification Summary & Compliance

This metric flange nut features M16x2mm coarse right-hand threads with Class 6G tolerance for precision fit. Manufactured from zinc-plated steel, it has a flange diameter of 33mm, thickness of 5mm, and standard hex profile (24mm width). The product complies with RoHS 3 (2015/863/EU) under exemption 6(a)-I and is REACH (EC 1907/2006) compliant, ensuring adherence to environmental and safety regulations for industrial fastener applications.

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