Truss head is the correct head style for poptop and luggage rack. A
carriage head has a similar large diameter shallow profile as a truss
head, but the shank of the bolt directly behind it is square. This won't
fit into the round holes on the luggage rack. Gowesty's bolts are truss
heads, incorrectly labeled.

If you want to see a carriage head bolt, remove one of the bolts holding
a skylight hinge to the top -- those are carriage heads and the holes in
the hinges are square.

Good job finding the metric stainless truss head bolts on fastenal! I
tried and gave up. M6 x 1 is the correct diameter and pitch.

--

Mike "Rocket J Squirrel" Elliott
71 Type 2: the Wonderbus
83.5 Westfalia: Mellow Yellow ("The Electrical Banana")
KG6RCR

On 5/18/2005 10:14 PM Alistair Bell wrote:

> From the Fastenal website, 2 contenders:
>
>
> TM2550016A20000  M6-1.0 x 16mm S/S A2 Slotted Truss Head Machine Screw
> $0.6517 each
>
> TM2550020A20000 M6-1.0 x 20mm S/S A2 Slotted Truss Head Machine Screw
> $0.6025 each
>
> both have the pitch size of 1 mm, which i believe is correct.
>
> The stock screw from the Van measured 20 mm overall, the measurements
> above are from base of head to end of screw.
>
>
> Long URL to particular page, the two above are at the bottom:
>
> http://www.fastenal.com/web/products.ex?
> c=600059&s=m6&dispatch=search&curPage=6&page=6&next=Next
>
>
> click on the links for each screw to get more details, ie:
>
> "Truss Head Screws are also knows as oven head or stove head screws,
> Truss Head Screws have the largest head diameter of all machine screw
> head styles.
> Ideal for use in enlarged holes.
> Truss Heads have a low, rounded top with flat bearing surface, length
> is measured from under the head."
>
>
> They appear to be quite similar to what GoWesty calls carriage bolts :)
>
>
>
> Alistair
>
>
> '82 westy, diesel converted to gas in '94
> http://www.members.shaw.ca/albell/
>