M8 Hammerhead bolt

M8 Hammer Head Bolts made of stainless steel - ideal for permanent use on your vehicle's roof!

Also available with M10 thread in various lengths!

Combine the thread diameters, thread lengths, and fastening materials needed for your project.

These M8 hammer head bolts are ideal for securely mounting roof racks, roof decks, solar panels, and other accessories to the C-rails on the roofs of VW T5, T6, T6.1, Crafter, Sprinter, and other vehicles.

Due to their design, they can be inserted retrospectively at any point and do not need to be pushed through the rail openings to the desired position.

You get the hammer head bolts including mounting material as desired:

Self-locking nut	Self-locking nut with cover cap	Self-locking flange nut	Eye nut	Star knob	Security star knob

Washer ⌀ 16 mm	Washer ⌀ 24 mm	Rubberized washer	Spring washer

When choosing the length, consider the material thickness of all parts:

When choosing an M8 hammer head bolt with 20 mm thread length, with the bolt and washer, for example, 7.4 mm of usable thread length remains for the material to be fastened:

20 mm thread - 3 mm C-rail - 8 mm nut - 1.6 mm washer = 7.4 mm

Data for selectable accessories:

Further material thicknesses:

Do you need other lengths or other fastening materials? Then please feel free to contact us. We also manufacture T-nuts to customer specifications on short notice.

Always use threadlocker to prevent screw connections from loosening on their own! We offer environmentally friendly, hazard-free threadlocker.