S-97765A190 M16 DIN 6923, ISO 4161 Flange Nuts

Flange Nuts

1231FA00051 Flange Nuts
1231FA00051 Flange Nuts

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

Part No.
Part No. 1231FA00051
Equivalent to mcmaster :
97765A190

Basic Information

System of Measurement Metric
Nut Type Flange, Hex
Specifications Met DIN 6923, ISO 4161

Dimension Parameters

Width 24 mm
Height 16 mm

Thread Parameters

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

Head Parameters

Drive Style External Hex
Hex Nut Profile Standard

Flange Parameters

Flange Diameter 34.5 mm
Flange Thickness 2.4 mm

Material & Strength Parameters

Material Zinc Yellow-Chromate Plated Steel
Strength Class Class 10
Technical Drawings No drawings available at the moment, will be launched soon
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Key Features & Benefits at a Glance

  • Enhanced load distribution with a 34.5mm flange diameter to prevent surface damage and loosening under vibration.
  • Superior corrosion resistance from zinc yellow-chromate plating, extending service life in harsh industrial environments.
  • High-strength performance with Class 10 rating, ensuring reliable fastening in heavy-duty applications.
  • Easy installation and removal using standard external hex drive tools, reducing assembly time and labor costs.
  • Precision thread fit with Class 6H and coarse 2mm pitch for quick engagement and reduced cross-threading risks.
  • Broad compatibility with DIN 6923 and ISO 4161 standards, guaranteeing interchangeability and quality assurance.
  • Robust material integrity from steel construction, providing excellent durability and shear strength.

Professional Applications & Engineering Value

This M16 flange nut is engineered to address common industrial challenges such as joint failure and corrosion-induced degradation. The zinc yellow-chromate plated steel construction offers a protective barrier against moisture and chemicals, making it ideal for outdoor machinery, automotive assemblies, and structural frameworks. Its 34.5mm flange diameter distributes clamping force evenly, reducing point stress and minimizing the need for washers. With a coarse metric thread and Class 6H fit, it ensures rapid, secure fastening in high-vibration environments like conveyor systems and heavy equipment, enhancing operational safety and reducing maintenance downtime.

Specification Summary & Compliance

This flange nut adheres to precise dimensional tolerances with Class 6H thread fit and M16x2mm coarse thread specifications. It is manufactured in compliance with DIN 6923 and ISO 4161 standards, ensuring consistent quality and performance. The product meets industry requirements for material and finish, with no specified RoHS or REACH exemptions noted, supporting use in regulated applications where metric coarse threading and high-strength Class 10 properties are critical.

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