S-91005A033 M6 Flange Nuts

Flange Nuts

1237FA00001 Flange Nuts
1237FA00001 Flange Nuts

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

Part No.
Part No. 1237FA00001
Equivalent to mcmaster :
91005A033

Basic Information

System of Measurement Metric
Nut Type Flange, Hex

Dimension Parameters

Width 10 mm
Height 8 mm

Thread Parameters

Thread Type Metric
Thread Size M6
Thread Direction Right Hand
Thread Pitch 1 mm
Thread Spacing Coarse
Thread Fit Class 6G

Head Parameters

Drive Style External Hex
Hex Nut Profile Standard

Flange Parameters

Flange Diameter 16 mm
Flange Thickness 2 mm

Material & Strength Parameters

Material Black-Oxide Steel

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (01/17/2022, 223 SVHC) Compliant
Technical Drawings No drawings available at the moment, will be launched soon
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Key Features & Benefits at a Glance

  • Enhanced Vibration Resistance - The integrated flange distributes load over a wider surface area, preventing loosening under dynamic loads and reducing maintenance needs.
  • Superior Corrosion Protection - The black-oxide steel finish provides a durable barrier against rust and wear, extending service life in harsh industrial environments.
  • High-Strength Thread Engagement - Class 6G thread fit ensures reliable, precise mating with bolts, minimizing the risk of cross-threading and assembly errors.
  • Efficient Installation - The external hex drive design allows for quick and secure tightening using standard wrenches, speeding up assembly processes.
  • Robust Load Distribution - A 16mm flange diameter and 2mm thickness offer increased bearing surface, ideal for applications requiring high clamp force without damaging soft materials.
  • Wide Compatibility - Metric coarse threading (M6 x 1mm) ensures easy integration with common industrial components, reducing sourcing complexity.
  • Environmental Compliance - Meets REACH and RoHS 3 standards, ensuring safe use in regulated industries and global market accessibility.

Professional Applications & Engineering Value

This M6 flange nut is engineered to address common industrial fastening challenges, such as vibration-induced loosening and corrosion in demanding environments. The black-oxide steel construction provides excellent durability and resistance to oxidation, making it suitable for automotive assemblies, machinery, and outdoor equipment where exposure to moisture and stress is frequent. With its integrated flange, it eliminates the need for separate washers, streamlining installation and reducing part counts in heavy-duty applications. The Class 6G thread fit and coarse thread pitch ensure reliable performance in high-vibration settings, offering a secure, long-lasting fastening solution that minimizes downtime and maintenance costs for engineers and procurement specialists.

Specification Summary & Compliance

This flange nut adheres to metric coarse thread standards (M6 x 1mm) with a Class 6G thread fit for precise dimensional accuracy. It features a 10mm width, 8mm height, and 16mm flange diameter, manufactured from high-strength steel with a black-oxide surface treatment. Compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) regulations, ensuring environmental safety and suitability for industrial use.

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