M8 Hammerhead bolt

M8 hammer head bolts made of stainless steel - ideal for long-term use on your vehicle's roof!

Also available with M10 thread in various lengths!

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

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

Thanks to their design, they can also be inserted retroactively at any position and do not need to be slid through the rail openings to the desired spot.

You receive the hammer head bolts including mounting material of your choice:

Self-locking nut	Self-locking nut with cap	Self-locking flange nut	Ring nut	Star knob	Safety star knob

Washer ⌀ 16 mm	Washer ⌀ 24 mm	Rubberized washer

Consider the material thickness of all parts when choosing the length:

When choosing an M8 hammer head bolt with a 20 mm thread length, including 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:

Other material thicknesses:

Do you need other lengths or different mounting material? Then please get in touch with us. We also manufacture T-nuts according to customer specifications on short notice.

Be sure to use threadlocker to prevent screw connections from loosening on their own! We offer environmentally friendly, hazardous-substance-free threadlocker.