Main.TrailIndexPage | Chassis and Body | Fasteners and clamps

Fasteners and Clamps

This component is part of Chassis and Body.


Define the component. Include, if known, the german language word for the component, as well as the English or American equivalent. Show a picture, a diagram.

  • Its technical name & common name(s)
  • part # - start year & end year
  • which area it belongs to - engine, transmission, body, injection etc, link back to the relevant section


Describe, in general terms the function of this component. Meaning what is it there for and what role it plays. Describe how it works, the inside mechanism. Use diagrams to explain.


Describe common maintenance procedures, and common faults that may occur. Describe how these may be diagnosed and resolved. Again, include diagrams, photographs and explanations. Where possible, include measures, tolerances, weights etc.

  • Symptoms when it faults
  • How to test if it is faulty - what tools to use
  • How to fix / change

Link to related components where appropriate.

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If you need them bad & can't find the originals, you might consider stainless steel as a substitute. They have flat head phillips machine screws up to M6 (M4 = p.n. U-MMPX-4/10F). You can order their catalog from I haven't tried these particular screws, but I use a lot of their other metric fasteners (and other stuff got their metric O-ring assortment recently, and it has come in handy).

Will Samples says: As to your countersunk screws you are facing a problem we all are and many of us do not know it. The problem is that the original screws you look for were: 000063 008129 8mm countersunk 8x12 007516 004200 4mm countersunk 4x10 are designtions that are no longer used. The DIN 63 designation is now DIN 963. But it has a larger head than the original 63. The DIN 7516 is now 7513-F. So, if you ask MB to find the screws, as far as they know, they don't exist. The standardisation of the hardware in Germany covers everyone and everything. If you need original screws you will need to get them used.

I'm having a hard time getting various, regular metric nuts and bolts from the MB dealer. Does anyone have a good source for M6 and M8 yellow cadmium plated screws in the Los Angeles area?

Frank says: You can get them from Wurth, but they are hard to deal with. There is also a web site that advertises them, but I haven't dealt with them yet. Full-threaded screws are no problem to get, but new partial thread screws and larger sizes such as engine mount screws generally can't be found. Sometimes a steel wool soap pad will take off the grime & make them presentable; otherwise, get them bead blasted and then paint them with the Dupli-Color gold.

I believe that the Euopeans took English or US standard sheetmeetal screws and converted them to metric. That is why we have sizes such as 2.9 and 3.9mm sheetmetal screws. So, I think you can find them at the hardware store. A customer said he was going to his local marine supply store and buying stainless steel. I keep most of these in stock in "official" metric sizes if you cannot find a source. But I bet you can get them locally.

About the screws that go in from the top of the rocker panel. The heads of these screws need to be very flat or there will be lumps in the rubber tread on the door sills. I can't find them either, so I'm living with lumps until I find some.

Will Samples says: Those screws are officially: DIN 7982, size 2.9x9.5, phillips drive, flat head, countersunk. I have a bag of 100 in plated mild steel. I can get stainless. The mild steel are $.20 each.

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