Anyone know what the thread pitch is on these FX shroud cones? I don't have a threads gauge for the metric sizes but will soon order one. I'm pretty certain it's the same on the muzzle end.
jk
jk
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Thread size?
- Thread starter jking
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The FX stuff that isn't 1/2UNFx20 is usually M18 threaded.
Edit: as pointed out below, it's actually an M20 thread...
Edit: as pointed out below, it's actually an M20 thread...
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We can give you the answer you want if you can take a few pictures for us. Set it on end on a metric tape measure and take a picture so we can see how big the outside diameter is. Then take a picture from directly over the threads, perpendicular to the threads, so we can measure and give you the correct thread pitch.
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You can often match the metric threads / mm on the actual part to a threads per inch gauge. Find the gauge that fits it as close to perfect as you can then convert the threads per inch to threads per millimeter to see if it matches a known metric thread.
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My local hardware store is my go to when baffled with such a thing.
they have lots of fitting adapter plate things where you take said thread and try it in sizes til it fits
they have lots of fitting adapter plate things where you take said thread and try it in sizes til it fitsUpvote 0
Shoot, my bad - you're right . . . it's M20. I was responding from the car and double checked when I got home. Will correct my previous post to prevent spreading incorrect info!
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Please use the correct name for a thread. There is no such thread as M20. That thread 20mm x 1.0mm.
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It may be a USA market thing but metric sizes are referred to with an M. EDIT: Sorry for my mistake. Glem.Chally helped me understand.
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Thanks guys, I made a Delrin adapter for my factory Crown shroud so I can use it with a 14X20 tensioner. Just have a super tight push in fit now but I'd really like it threaded. I may try to find the die if they aren't too costly. Metal would be the best I know.
Thanks again.
Thanks again.
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Found a package deal on Ebay, two taps and die for just over $20. Should be fine for occasional use.
HSS M20 x 1mm Taper & Plug Tap & M20 x 1mm Die Metric Thread Right Hand
HSS M20 x 1mm Taper & Plug Tap & M20 x 1mm Die Metric Thread Right Hand
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I am not recognizing for which FX shroud is in the picture, but the 2019-20 MK2 shroud muzzle end cap (prior the CF barrel tuner) was M27, and the thread was conical. I never removed the action end cap from the shroud.
Another hint... use hotmelt rubber glue (for archery arrows), melts low temp - with a cigarette lighter, but the connection is really strong.
Another hint... use hotmelt rubber glue (for archery arrows), melts low temp - with a cigarette lighter, but the connection is really strong.
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It's M everywhere, I think what Steve is referring to is M20 can be coarse or fine. Need the pitch also. M20x1,m20x1.5 for example.
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Good catch there Nate. Contacted the seller and hopefully got the order shut down. Sure, glad you saw it.
I'd been like what the heck.
I'd been like what the heck.
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If I ever need to die cut threads up to a shoulder I grind the taper off one side of a cheap die then lead with the taper and flip the die to finish the thread. This helps when something like the old fx M20x1 suppressor needs to tighten square to a shoulder.
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Heavy,,, as an alternative, you can countersink or counter bore the female threads to remove a thread or 2, when you need a shouldered fit.
glad you gentlemen got your metric threads figured out
glad you gentlemen got your metric threads figured out
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I understand, just suggesting another way when you don't have much female thread to work with.
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M20X1.5 my butt ! Here's my soon to be returned M20X1.5 compared to the cone thread. The way I measured it which I should've done from the get-go, it comes out to probably a M26. Oh well live and learn. I did order a missing change gear for my Atlas Craftsman lathe so I can turn the thread that way.
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