Upholstery Trim Screw

I think the closest I found was a #4 at my local ACE Hardware.

Yes, #4 are available at may local Ace. But they are larger than the originals.

I used sheet metal screws Stainless. The holes vary that is the issue. On Top it was 3.9 mm on the side 4.2mm.

I added also stainless collars ..need to fit the screws ..
all easy to get via web search "handfull of $" but very nice..

Matthias

..think you need 12 in total..need to cound again

Stateside go here: Different lengths too.

https://www.belmetric.com/29mm...1dbl2l2c3987k3uvnkg2

Washers here:

https://www.lebaronbonney.com/...itemdesc.php?ic=1756

They are more of a cup without the countersink look. They can be painted black.

Thanks for the feedback guys. 2.9mm oval head screws on order. Little more trouble finding a true 3mm conical washer like the originals

JT, this got me curious so I looked at my stash of 'original' parts and found nothing helpful. Everything in the bag was 0.010" - 0.112" outside thread diameter, 3/4" long, 24 threads per inch. So I appear to have a collection of US spec #4 screws (I now remember buying these at PPC in Denver c. 30 yrs ago so that was what they supplied at the time).

I have had the panels only clipped on for many years, no screws (...I know, I know....) and guess the originals SHOULD be 2.5mm (0.100" OD) since the holes in the door are very small. 2.9mm is almost identical to #4 in terms of OD hence the assumption that OEM is 2.5mm. Can anyone verify this? I'd be curious about OEM screw length too!

BTW there are 9 holes per door, including two on the bottom edge.

As for the small Bezels I believe I have some originals, the smaller ones shown below on the left. They are 5m OD and fit the small divits left on the door panels. Height is c. 1.25mm so they are pretty thin.

The screw lengths are various since the door panel is close to metal in some areas, and further away in others.

I ordered 100 of the 2.9mm. Yet, my dial caliper measurements were slightly smaller. The screws are used elsewhere on the car’s upholstery. I’ll, check back in as to how they work. I don’t have the link handy, but I did find some metal 3mm serrated conical screws at Walmart online of all places. They do not appear to be ideal, however cheap enough to experiment with. So, still on the lookout for a better replacement closer to the original.

After looking over more screw charts, my 2.5mm OEM size guess is likely wrong. (Below 3mm, considering normal size tolerances, it seems hard to discern metric hardware from familiar US sizes). Here are a few number, fwiw:

Tolerance for a 2.6mm OD screw is 2.43-2.57mm (0.096-0.101")
Tolerance listed for #3 size is often identical.

Tolerance for a 2.9mm OD screw is 2.76-2.9mm (0.108-0.114")
Tolerance listed for #4 size is often identical. Nomimal size is 0.112"

Many charts show a metric 2.2mm and 2.9mm with nothing between. Others show 2.6mm between, but I didn't see any showing specifically 2.5mm.

For JT, I'm curious what your originals measure? If they are only slightly smaller than hardware store #4s (i.e., within tolerance) maybe they are basically the same part?!

Hope this has not muddied the water. Appreciate info from anyone with more knowledge in this area than I