S-94942A107 M12 DIN 6923, ISO 4161 Flange Nuts

Flange Nuts

1231FA00018 Flange Nuts
1231FA00018 Flange Nuts

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

Part No.
Part No. 1231FA00018
Equivalent to mcmaster :
94942A107

Basic Information

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

Dimension Parameters

Width 18 mm
Height 12 mm

Thread Parameters

Thread Type Metric
Thread Size M12
Thread Direction Right Hand
Thread Pitch 1.25 mm
Thread Spacing Extra Fine
Thread Fit Class 6H

Head Parameters

Drive Style External Hex
Hex Nut Profile Standard

Flange Parameters

Flange Diameter 26 mm
Flange Thickness 1.8 mm

Material & Strength Parameters

Material Black-Phosphate Steel
Strength Class Class 10

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 black-phosphate steel coating, extending service life in harsh industrial environments.
  • Exceptional vibration resistance thanks to the integrated 26mm flange, eliminating the need for separate washers and reducing loosening.
  • High-strength Class 10 performance ensures reliable clamping force and durability for heavy-duty applications.
  • Precise Class 6H thread fit and M12x1.25 extra fine pitch enable secure, tight fastening in critical assemblies.
  • Broad industry compatibility by conforming to DIN 6923 and ISO 4161 standards, ensuring interchangeability and quality.
  • Simplified installation and maintenance with a standard 18mm external hex drive for common tooling.
  • Compliance with environmental regulations (RoHS 3 & REACH) for safe use in regulated markets.

Professional Applications & Engineering Value

This M12 flange nut is engineered to solve common industrial challenges like joint failure and corrosion. The black-phosphate steel construction provides a robust barrier against rust and wear, ideal for automotive chassis, machinery frames, and structural steelwork exposed to moisture. The 26mm flange diameter distributes load evenly, preventing surface damage and maintaining integrity under dynamic loads. With its extra fine thread and Class 6H fit, it ensures precise alignment and resistance to vibration loosening in high-stress environments, reducing maintenance downtime and enhancing assembly reliability. Its compliance with DIN 6923 and ISO 4161 standards guarantees consistent performance across global engineering projects.

Specification Summary & Compliance

This flange nut features an M12x1.25 extra fine metric thread with a Class 6H thread fit per ISO standards, ensuring dimensional accuracy. It adheres to manufacturing specifications including DIN 6923 and ISO 4161, with a flange diameter of 26mm and thickness of 1.8mm. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for industrial use without hazardous substances.

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