M6 - M12 Hex Flange Bolts to DIN 6921
Available with PPAP 3 certification
in a Zinc Clear Trivalent finish.

Earnest Machine’s line of 10.9 and 8.8 Metric Hex Flange Bolts are manufactured to DIN 6921 and are available with a level 3 PPAP certification. Both 10.9 and 8.8 grades are available in a Zinc Clear Trivalent finish, with diameters ranging from M6 to M12, and our line of 10.9 product has been baked to help prevent hydrogen embrittlement. 

Download the Spec Sheet

Our Spec Sheet has sizes, dimensions, product attributes, applicable sales markets, and everything else you need to know about our line of DIN 6921 Metric Hex Flange Bolts.

Find the spec sheet here >> 


Level 3 PPAP Certification Held to DIN 6921

Earnest Machine’s full line of Metric Hex Flange Bolts are manufactured to a Level 3 PPAP certification per DIN 6921 to ensure high-quality parts are supplied. 

Level 3 PPAP certifications are available at a subsidized cost if required. 

To learn more about PPAP certifications and how they are used within the industry follow the link below.

Learn more here >>

Baked to Prevent Hydrogen Embrittlement

Our line of plated high-strength 10.9 DIN 6921 Metric Hex Flange Bolts are baked to prevent hydrogen embrittlement.

Baking, also known as de-embrittlement, is a process that helps remove any atomic hydrogen that may have been introduced during the initial electroplating process. This helps the fasteners retain their ductility and prevents any hydrogen embrittlement failures from occurring within your fastened assembly.

Baking also ensures that our line of product meets industry standards for plated 10.9 fasteners.

Why Use a Hex Flange Bolt?

Hex Flange Bolts feature a built-in flange that eliminates the need for a separate washer. Pair this style of fastener with a Hex Flange Nut, Nylon Insert Hex Flange Lock Nut, or an All Metal Hex Flange Lock Nut, and experience superior locking action that is vibration resistant and reduces the likelihood of a failed assembly.

How a Hex Flange Bolt Works

Thanks to the built-in flange, Hex Flange Bolts work to spread the clamping load over a wider area, creating a tighter, more secure bond between the fastened components in your assembly. Hex Flange Bolts are also the preferred choice when fastening together metal to metal components.