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Flange Nut

A flange nut is a specialized fastener featuring an integrated flange that acts as a built-in washer. This design distributes the clamping load over a wider area, reducing the risk of damage to the material being fastened. Flange nuts are commonly used in various industries and applications where vibration resistance, secure fastening, and ease of installation are crucial. They are particularly beneficial in applications where a flat washer would be difficult to install or where space constraints exist. By eliminating the need for a separate washer, flange nuts streamline the fastening process, saving time and reducing the number of components required. Their versatility and efficiency make them a preferred choice in many mechanical and structural applications.

Size Range
Diameter Metric: M5 to M20
Inch: 0.2 " to 0.8 "
Length ----
Technical Specifications


Dia. m s Dc
Min.
Max.
Min.
Max.
M5 4.7 8.00 7.78 11.8
M6 5.7 10.00 9.78 14.2
M8 7.6 13.00 12.73 17.9
M10 9.6 15.00 14.73 21.8
M12 11.6 18.00 17.73 26
M14 13.3 21.00 20.67 29.9
M16 15.3 24.00 23.67 34.5
M20 18.9 30.00 29.16 42.8


Proof Load Size Range Equivalent Standards
Property Class Diameter Length
PSI N/mm2 Grade Metric Inch Metric Inch IS ISO DIN BS ANSI JIS
74000 to 174000 510 to 1200 4 to 12 M5 to M20 0.2 " to 0.8 " - - 15581 4161 6926 - B18.2.2 B1190


Understanding Flange Nuts

Flange nuts are a type of fastener known for their unique design, featuring an integrated flange or washer-like structure. This combination is commonly employed in the oil and gas industry for connecting pipelines and flanges. The flange serves to distribute the clamping load over a wider area, reducing the risk of damage to the material being fastened. This design also helps to prevent loosening due to vibrations, making flange nuts ideal for applications where secure fastening is crucial.


Applications of Flange Nuts

Flange nuts are commonly used in various industries and applications where vibration resistance, secure fastening, and ease of installation are crucial.They are particularly beneficial in applications where a flat washer would be difficult to install or where space constraints exist. By eliminating the need for a separate washer, flange nuts streamline the fastening process, saving time and reducing the number of components required. Their versatility and efficiency make them a preferred choice in many mechanical and structural applications.


Advantages of Using Flange Nuts

The primary advantage of flange nuts lies in their ability to distribute the clamping load over a wider area, reducing the risk of damage to the material being fastened. This design also helps to prevent loosening due to vibrations, making flange nuts ideal for applications where secure fastening is crucial. Additionally, the integrated flange eliminates the need for a separate washer, streamlining the fastening process and reducing the number of components required. This makes flange nuts a cost-effective and efficient choice for many applications.


Material Varieties

Flange nuts are available in various materials, including steel, stainless steel, and nylon, allowing for compatibility with different environments and requirements.The choice of material depends on factors such as corrosion resistance, strength requirements, and environmental conditions. For example, stainless steel flange nuts are ideal for applications in corrosive environments, while nylon flange nuts are suitable for applications requiring electrical insulation.


Installation and Maintenance

Installing flange nuts is straightforward and similar to installing standard nuts. The integrated flange simplifies the process by eliminating the need for a separate washer. Regular maintenance involves checking for signs of wear or corrosion and replacing the flange nut if necessary to ensure continued secure fastening. Proper installation and maintenance of flange nuts are essential to maintain the integrity and safety of the assembly.

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Pankaj International is an ISO Certified Nationwide Manufacturer of Stocked and Custom Nuts, Bolts and Fasteners

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