FWB Air Cylinder thread

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RifleNUT2
Posts: 7
Joined: Sat Aug 13, 2016 6:01 pm

FWB Air Cylinder thread

Post by RifleNUT2 »

I have a Feinwerkbau Model 800 Evolution and yesterday dropped the air cylinder tube on the ground and damaged the male tube threads. Can you tell me the correct thread count/pitch or the die needed to re-thread the male tube threads?

Thanks!
High Left
Posts: 107
Joined: Fri Aug 11, 2017 12:58 am

Re: FWB Air Cylinder thread

Post by High Left »

From measurements taken off the bleed cap, I'd say it's an M18 x 1.5.
TenMetrePeter
Posts: 603
Joined: Sun Sep 04, 2016 10:59 am

Re: FWB Air Cylinder thread

Post by TenMetrePeter »

Just wondering how you will rethread using a die when the start threads are the damaged ones. Going to have to split the die first with a Dremel or crack it open with the die holder I guess.
spektr
Posts: 887
Joined: Mon Jan 21, 2013 9:53 pm

Re: FWB Air Cylinder thread

Post by spektr »

If it were me, i would be looking for a metric thread file

https://m.grainger.com/mobile/product/N ... File-3MD32
Pheyden
Posts: 143
Joined: Wed Dec 17, 2014 4:26 am

Re: FWB Air Cylinder thread

Post by Pheyden »

Use a very fine 60 degree file to "dress" the thread, and then chase the threads with the proper die. Chasing the threads is vital, as you do not want to damage the threads in the receiver.
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