Mauser MO3 scope mount

[Rutland lad]

Looking for help here !
At the end of the season I gave my rifle a deep clean, only to find a screw missing in the quick release mechanism of my scope mount. I’ve been in touch with Mauser UK and the screw is not available as a spare part, but the whole ‘claw’ is, priced very reasonably at £60 !
So - can anyone help guiding me towards somewhere I can either buy a single screw to fit ? I really don’t want to spend £60 unless I have to. Some SD members have guided me towards buying a large box of assorted screws, again that might have to be the way ahead.

photos show relevant bits, and sizes as best I can tell.

 

[scotch_egg]

What does the screw actually do?

 

[Steff]

What does the screw actually do?

This!

@Rutland lad
Also I cannot make much of the pics. Are those photos of two different mounts? Pic 4 and 5 seem to show a lever with a round end where it is oval in pic 1.
Remove the remaining screw and show us measurements of that.

 

[Rutland lad]

The screw secures the quick release lever on the mount.
if you can see it, I’ve included photos of the size of the head of the other screw and the sizes of the holes it fits into.
The reason I’ve not removed the other screw is that it’s a sod to reseat as there’s a spring it passes through.
Photos 4 and 5 are of the hole the screw must pass through - hence why I’ve shown the internal measurements of all. Its not two different mounts - photo 1 is what is should look like, the remaining phots are of it having fallen apart.

 

[Stalker-of-the-deer]

Take the screw out and measure it then buy it from Accu.com for about £1

 

[Rutland lad]

Take the screw out and measure it then buy it from Accu.com for about £1

I like that - someone else suggested them but I thought I had to buy a load of different ones to get the one I wanted. Thanks

 

[Stalker-of-the-deer]

I like that - someone else suggested them but I thought I had to buy a load of different ones to get the one I wanted. Thanks

They are really good, I've had allsorts of odd bits from them.

Best one was a hornady powder throw I got for £50 because it was missing 2 screws off of it which were imperial.

Also got some blanking grub screws for my sauer 404 where the open sights were

Found the size cost be about £1 for the bolts and £2 delivery from accu and saved myself £150 on buying new

 

[Dalua]

Aside from anything else, there's maybe a lesson here to M03-users to insert a turnscrew from time to time to check these bad boys, despite the rather awkward angle of approach. Loss of that particular part is not something I'd have expected!

 

[Stalker-of-the-deer]

Aside from anything else, there's maybe a lesson here to M03-users to insert a turnscrew from time to time to check these bad boys, despite the rather awkward angle of approach. Loss of that particular part is not something I'd have expected!

I throw some blue lock tite in mine to stop this exact problem!

 

[Rutland lad]

Bad news.
Order from ACCU arrived very promptly, but thread too coarse on standard M3 bolt.
Search is ongoing. Engineering contact to be visited soon who might (just might) be able to copy an original screw.
I‘m thinking this might end up with me paying Mauser the £60…… that will definitely upset my equilibrium.

 

[Stalker-of-the-deer]

I would hazard a guess that it's an m3 fine or ultra fine thread.

 

[bullet chucker]

Rubbish' take your screw to an engineering work shop, ask if they would measure the THREAD PITCH of the screw and its length then go and order the exact one to fit!

BC.

 

[Rutland lad]

Update - visited two local precision engineering firms with screw. Both threw their hands up in despair at the very fine thread on the bolt. Both didn’t have thread gauges fine enough to accurately measure the thread.
At this point I concede defeat - official Mauser part ordered. I can justify this outlay to myself as a ‘**** happens’ one off that didn’t spoil last seasons stalking and won’t spoil next seasons either.
Thank for your help and advice everyone. My advice to you is to use thread lock on any small fine threaded bolts !