M8 Hex Flange Bolt 25mm Zinc Plated

When a join cops a bit of movement and shake, a flange bolt does the work of a bolt and a washer in one. The serrated flange spreads the load across a wider face and bites in as you tighten, so the head sits flat and stays put.

This one is M8 with a 25mm shank, made to DIN 6921 in class 8.8 zinc-plated steel. The high-tensile rating holds torque on metal and machinery where a soft bolt would stretch or work loose, and the zinc coat keeps surface rust off in a shed or under a vehicle.

Reach for these on trailers, mower decks, brackets, and any bolt-up that takes vibration. If you're matching an existing thread, bring the old one in and we'll check the size with you.

Full thread, pitch, and grade details are in the specs below.