Removing Stripped Allen Head Door Striker Bolts - PeachParts Mercedes-Benz Forum

martureo · #11 12-02-2020, 08:14 AM

Quote:

Originally Posted by Diesel911

The Bolts are 8mm x 1.25 x 16mm long (the threaded area)

I did a google image search for : 8mm 1.25 flat head screws

There is allen head, Torx and phillips head bolts/screws of the same design. Different finishes and they also have A2 stainless steel. If I remember correctly some knife makers use A2 stainless and it can be hardened or otherwise heat treated.

I am wondering if the Torx head ones would be the best way to go as far as removing the later on.

16mm long means the threaded area. I mention that because for some reason at the local industrial hardware they seemed to be using the overall length.

I bought 4 flat head allen head bolts for 80 cents each ant the threaded area was 15mm but on the label on the bin it said 20mm? which I am guessing represents the total length of the screw/bolt. Black phosphate and the allen head socket in the screw/bolt was slightly deeper.
I am going to make sure never-seize gets under the head as well as the threads hoping it will make it easier to get them out the next time.

They also had A2 stainless ones at $1.25 each.

Do not use stainless. The thread plate that these thread into is made of carbon steel. With any moisture in the environment it will cause galvanic corrosion between the stainless bolt and the thread plate, making it really hard to remove.

Never seize is a great idea.

If you want the exact screw as from the factory its as you said a "M8x1.25x16mm socket head oval screw."

I think one of the best coatings that I've seen is a PVC coating from GM, but its hard to find. GM7114M.