Bolts for Anschütz adaptor for 19/20 System - Solved!

[RAMOS1972]

As the title, does anyone have any for sale or can tell me where I can buy these two screws that fix the Anschutz adapter from round systems to square chassis.

I belive they are fine thread M6x075 so not easy to find!

Edited 7 June 2023 by RAMOS1972

[Colin]

Very difficult to find, I found some 6mm fine pan heads  but not csk and 3 & 4mm fine csk but no 6mm.

I think I would try emailing an Anschutz dealer or a local gunsmith, it will probably be quicker. I'm sure they are out there but finding them.....

[RAMOS1972]

Thanks, I have already sent an e-mail to Anschutz, so let's wait for the answer. 

[Colin]

Might be worth emailing Edinkillie too, they are super helpful and knowledge second to none

[RAMOS1972]

I just received an email from Anschutz, apparently the issue is resolved.

[jimrward]

@RAMOS1972 and the answer is, do you have the exact specifications for the bolts. It would be useful information for others in the future, many thanks

[RAMOS1972]

@jimrward the exact specifications are M6x0.75x12 (fine thread) and it was solved with an email to Anschutz Germany.

They have them in stock and just bought the two I need, so problem solved!

[jimrward]

Many thanks, you might get them quicker at a local hardware store 

[RobinC]

Sadly Jim it will be a mega hardware store that stocks metric fine!

But a good specialist fastener company will probably be able to get them, but I doubt will hold them in stock. Metric fine is used on some machine threads and some auto motive, but realistically its not a commonly used thread form, and there is no logic to why they have used it.

I get all my fasteners from a local company and they've never failed yet, and I've got stock of most common size M's and UNF's, but I'm not an Anschutz person so no M fines,  but next time I'm in restocking my workshop I'll enquire, and see if I can get metric fine?

Quite why Anschutz chose them is beyond logic!  Its on a small bore, there's little recoil, they are stainless, so not mega torque, and there are full bores held together with standard M forms or similar UNF perfectly satisfactorily!

Could it be to make it difficult to get else where, so you have to buy from them!! But, more likely some time in the past some one had a cheap stock of them, and they started using them, and they've used them ever since, silly really.  

Could be worse, Italian motorcycles from recent years, struggling from one financial crisis to the next in the 80's used what ever they could get, half mm thread dia's were often used, I had a Ducati that had all strange threads!!!! 

Have Fun

Robin

 

Edited 8 June 2023 by RobinC

[tim s]

Robin,

Unless the Mauser that was the Match 54s parent used a fine thread, my guess is that Anachutz wanted more thread engagement in their round action. The Mauser had a square base, perhaps less deep than a Finnish Lion but on that order, but Anschutz changed this to round, possibly to reduce machining with round bar stock. The bolt is offset in the receiver* to give the bolts more seating depth, so a fine thread would reinforce this.

*Also necessitating the lugs be spaced at 120° rather than 180° (a feature Walther retained), to ensure enough depth for the left hand recess.

[RobinC]

Tim

Do the modern Anschutz actions us the same thread form?

I don't use that form, but when I visit my tame supplier next, I'll see if I can get some C/S and cap head Allens in steel M6 X 0.75, and maybe longer, so they can be sawn to length, as people always seem to be struggling to find them. 

I only pay pennies for what I get. I have one in my spares (no idea where it came from!) that's 60 mm long, what lengths are standard, and would be required?

Have fun

Robin

[tim s]

Robin,

All Match 54s, and cylindrical derivatives use the same M6×.75mm thread. Screw length is not so constant in my experience as stock dimensions have changed.

2013s are M5 I think, and Match 64s too.

[RobinC]

Are the M5's in the newer ones,  Standard or Fine?

Have Fun

Robin

[trshooter]

2013s and square Anschutz adapters use standard M5 screws to attach to the stock.

Round actions in wooden/metal stocks with matching round inletting just need regular cap head M6x0.75 screws which are readily available online. The problem is sourcing spare screws to attach a round action to a square adapter; the latest 4980 adapters from Anschutz and Grunig use M6x0.75 screws with countersunk heads which are non-existent online, including ebay and aliexpress Same goes for low cap head versions which older 4980s use - Anschutz doesn't even have any spares left of this type anymore (I inquired a few weeks ago)

[jonty]

I would agree that the fine thread is to give more engagement for the bolt with the thread depth being shallow.

However, Some, if not all, 4760 Armadillo hook buttplates, have  fine thread on the bolt which goes through the hooks elbow and screws into the actual buttplate.  I would imagine the bolt is 6 or more mm diameter, and screws in a fair way, so why did Anschutz use a MFine thread?

Treat these bolts like gold as they are very hard to find, if at all.

 

jonty