Hex Flange Bolt DIN 6921 Grade 4.8 & 8.8 for Automotive and Agricultural Machinery

A Hex Flange Bolt combines a standard hex head with an integrated circular flange. The flange creates a wider bearing surface beneath the bolt head, helping distribute the tightening load across the connected part. For many assembly positions, this design can reduce the need for a separate washer and simplify the fastening process.

Produced to DIN 6921, this bolt is a practical choice for repetitive assembly work where installation efficiency and stable clamping are important. The hex head is easy to install using standard spanners or sockets, while the integrated flange helps create a cleaner and more streamlined fastening arrangement.

Carbon steel Grade 4.8 and Grade 8.8 options are available for different automotive, agricultural machinery, photovoltaic, and general industrial assembly requirements.

Product Specifications

Why Use a Hex Flange Bolt?

For buyers sourcing fastening parts for production lines, repair programs, or machinery assembly, a DIN 6921 flange bolt can simplify component selection. The integrated flange combines the functions of a hex head and a broad contact surface in one fastener.

This is particularly useful when the connected part needs improved load distribution beneath the bolt head or when reducing the number of separate components is preferred. Instead of sourcing a conventional hex bolt and a separate washer for every connection, the flange bolt offers a more compact fastening option for compatible assemblies.

Grade 4.8 and Grade 8.8 options allow buyers to select the appropriate bolt based on the required mechanical performance and the intended operating condition.

Applications in Automotive and Agricultural Machinery

DIN 6921 Hex Flange Bolts are widely suitable for fastening metal components in automotive and agricultural machinery assembly. They can be used for brackets, guards, frames, mounting points, housings, support parts, and other bolted connections where a flange-bearing surface is beneficial.

Typical applications include:

Automotive brackets, covers, guards, and chassis-related components

Agricultural machinery frames, protective covers, support assemblies, and equipment fixtures

Tractor and farm equipment metal assemblies

Photovoltaic support structures and installation components

Industrial machinery and equipment frames

Fabricated metal parts, rails, brackets, and mounting plates

OEM production and replacement fastener supply

Grade 4.8 and Grade 8.8 Options

Grade 4.8 and Grade 8.8 Hex Flange Bolts are available to support different purchasing and assembly requirements.

Grade 4.8 is suitable for general fastening applications where standard mechanical performance is required. Grade 8.8 is commonly selected when the application requires a higher strength-grade option for machinery, structural parts, equipment connections, or demanding assembly environments.

When sending an inquiry, buyers can specify the required grade together with bolt diameter, length, application, and quantity. This helps ensure the selected DIN 6921 flange bolt matches the intended assembly requirement.

Buyer Information for an Accurate Quote

To receive a suitable quotation, please provide:

Required standard: DIN 6921

Bolt diameter: M6–M16

Required length: 10 mm–100 mm

Strength grade: 4.8 or 8.8

Order quantity

Application or equipment type

Surface finish requirement, if applicable

Packaging requirement, customer label, or set-packing requirement

If matching nuts, washers, or other fastening accessories are needed, include them in the inquiry so the complete supply scope can be prepared together.

FAQ

What is the main advantage of a DIN 6921 Hex Flange Bolt?

The bolt has an integrated flange beneath the hex head. This creates a wider bearing surface and can reduce the need for a separate washer in suitable fastening assemblies.

What strength grades are available?

This product is available in carbon steel Grade 4.8 and Grade 8.8.

What sizes are available?

The available diameter range is M6 to M16, with lengths from 10 mm to 100 mm.

Can Hex Flange Bolts be used in agricultural machinery?

Yes. They are suitable for agricultural machinery frames, guards, brackets, mounting points, covers, and other metal assembly positions where the selected size and grade meet the equipment requirement.

Can these bolts be used for automotive applications?

Yes. DIN 6921 Hex Flange Bolts are suitable for many automotive component assemblies, brackets, support parts, guards, and fabricated metal connections.

Do I always need a washer with a flange bolt?

The integrated flange provides a wider contact surface, so a separate washer may not be necessary for suitable applications. The final fastening configuration should match the assembly design.

Can you provide custom sizes or packing?

Custom sizes and packaging are available upon request. Please provide the required bolt specification, quantity, and packaging details when requesting a quotation.

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Looking forDIN 6921 Hex Flange Boltsfor automotive production, agricultural machinery, photovoltaic installation, or industrial assembly?

Send us your required diameter, length,Grade 4.8 or 8.8requirement, quantity, and application details.

We can prepare a quotation based on your fastening specification and packaging needs.