Help - Bolt that Mercedes say doesn't exist

[bbr92]

I've got bags full of these . If the thickness is the same .

25mm long and approx 4.8/5mm diameter?

 

[bbr92]

It probably does exist, just not sold separately. It may come if you buy the whole housing.

I spent about an hour with Mercedes Southampton yesterday looking at various part diagrams on the screen and one of them showed this screw. Its a standard part for the OM642830 350 V6 CDI engine as have looked on a number of images and they all have them so bizarre as why its not listed as the amount of people that must drop them every time the filters are changed!

 

[bbr92]

Quick update so the the ones from eBay arrived and the diameter isn't correct and the thread is to tight. I phoned Mercedes again and quoted the P/N A0019846629 and was told, of that's a common self tapper used on many models......but not yours, Ok well can you order one so I can test, which they have done. Will see tomorrow if it fits.

 

[Petrol Pete]

It cuts its own thread during installation. the now VERY frequent plastic gubbins found in cars these days. A smooth hole is moulded in whatever the plastic part is , the line worker with his/her battery screwdriver does the rest.

Can also be used on clearance holes in conjunction with a captive 'nut'

 

[Petrol Pete]

Quick update so the the ones from eBay arrived and the diameter isn't correct and the thread is to tight. I phoned Mercedes again and quoted the P/N A0019846629 and was told, of that's a common self tapper used on many models......but not yours, Ok well can you order one so I can test, which they have done. Will see tomorrow if it fits.

If there is enough meat around the hole just drill it out a bit.

 

[pillow]

This looks exactly like it, I make it 25mm long and 5mm give or take diameter. Does that sound right for that part?

I think it is 30mm long, 5mm diameter.

To be honest being a self tapping screw, if the extra length is a problem you can quite easily cut 5mm off the end.

N000000000464 is a 25mm, 4.8mm diameter self tapper. No decent picture that I can find.


There's this too:

N000000000531

Although it is a 25x4.8mm it is a sheet metal screw, not a self tapper, so would probably require a lot of effort to screw in.

 

[pmcgsmurf]

I just bought a second hand air box from ebay last time I was missing a screw, removed all the screws and chucked the box in the bin, £12 I think it was.

 

[OneForTheRoad]

25mm long and approx 4.8/5mm diameter?

I'll find them in the morning and measure them. These screws are made for plastics .

 

[bbr92]

So latest update from Mercedes A0019846629 doesn't fit it is the right length but to smaller a diameter. Original bolt top, new part bottom.

 

[bbr92]

So latest update from Mercedes A0019846629 doesn't fit it is the right length but to smaller a diameter. Original bolt top, new part bottom.

Think I'll just give up and glue it.

 

[optimusprime]

Would have been faster in the first place, to take a sample in to Mercedes , and say i want one of these .Truth be known, i bet that screw is used in 100 of places on your car . And it only took 30 post to sort out one screw .

 

[bbr92]

Would have been faster in the first place, to take a sample in to Mercedes , and say i want one of these .Truth be known, i bet that screw is used in 100 of places on your car . And it only took 30 post to sort out one screw .

I did, and they cannot find it which is why I asked for help on this forum.

 

[OneForTheRoad]

So latest update from Mercedes A0019846629 doesn't fit it is the right length but to smaller a diameter. Original bolt top, new part bottom.

25 mm x 5 mm . Is what I've got . There's also 20mm X 5mm .

 

[grober]

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[pillow]

So latest update from Mercedes A0019846629 doesn't fit it is the right length but to smaller a diameter. Original bolt top, new part bottom.

Looks a bit longer too.

I have found another which may be the one.

These are 6.3mm diameter, 25mm long.

N000000000826​