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Sat Feb 27, 2010 3:26 am

I'm thinking of getting some of these made. They are M4X20 fillister head DIN 85. But the old DIN spec with a domed head

I have these broken ones which i think are the right ones, can anyone confirm these are the right ones? Or if anyone knows a source i would be interested

Sat Feb 27, 2010 10:13 am

Here's a picture of my screw but I only have a picture of it installed.

Head looks the same:

Sat Feb 27, 2010 12:18 pm

http://www.mcmaster.com/#machine-screws/=603xp5

hit this link and enter this number:
90353A217

Metric Pan Head Slotted Machine Screw Zinc-Plated Stl, M4 Size, 20mm Length,.7mm Pitch
In stock at $5.04 per Pack
This product is sold in Packs of 100

Head Style
Pan
Pan Head Style
Pan
Material Type
Steel
Finish
Zinc-Plated
Steel Type
Plain Steel
Self Locking Element
None
Drive Style
Slotted
System of Measurement
Metric
Metric Thread Size
M4
Metric Thread Pitch
.7 mm
Thread Length
Fully Threaded
Length
20 mm
Head Diameter
8 mm
Head Height
2.4 mm
Rockwell Hardness
B71
Minimum Tensile Strength
58,000 psi
Thread Fit
Class 6h
Specifications Met
Deutsche Industrie Normen (DIN)
DIN Specification
DIN 85
Screw Quantity
Individual Screw

They aren't "exactly" the same....but.......pretty close...and they are cheaper than having them made......

Sat Feb 27, 2010 1:33 pm

These are really hard if not impossible to find. I'm an engineer for machinery equipment and have quite an interest in old hardware. To my knowledge these have generally been out of production at least since 1970 if not earlier. German automotive industries changed to Phillips head or even allen head by ca. 1960-65.
sometimes on continental European swapmeets you find NOS packets of this style. I can have an eye on these with exact specifications given.
I don't think that there is any new supply for bold head style metric screws with the threads not going the whole length.
But there might be some other applications like Mercedes or motorcycles of the time, that have these reproduced!?

Sat Feb 27, 2010 2:57 pm

Very early headlight adjustment screws,like pre '52, have a very similar head,I have heard of these being shortened and modified to M4x 20mm to get pretty close to the original.
What about the washers and nuts...are they anything different?

Sat Feb 27, 2010 4:50 pm

Thanks for the replies.....Doug, thanks for the link, i do have some like that already, think i will try a couple of places see if i can get them made.
I believe nuts and washers are just standard.

Sat Feb 27, 2010 6:46 pm

sheesh, it's like a full time job helping you

**can i have 12 please**

Mon Mar 01, 2010 5:45 am

Went to a place today, they are going to make me some. I'm only going to get a small batch done, as i dont suppose many people would be as interested in bolts as Rockstock is :wink:

Going to get them galvanised as per the original ones.

Thanks for the pics Chris.