5/8 X 24 Tenon

[retiredpm]

What is the tenon diameter for muzzle brakes with this size
theards - when turning the barrel-what is the diameter to start

thanks for the help

Ken

 

[Fast14riot]

Major diameter should be 0.623"

 

[retiredpm]

thanks for the info

 

[LVLAaron]

this is a nice to have

 

[WSnyder]

TBAC Centerfire Specs

 

[retiredpm]

Nice -thanks very much

 

[retiredpm]

thanks for both charts

 

[DaveTooley]

Or use this link for any thread. Internal or external

UN imperial screw thread calculator

theoreticalmachinist.com

 

[hpshooter]

Machinery's Handbook is your friend. Many used ones available on the web. The 32nd edition is the current one but for basic information for gunsmith type machining most any edition is a valuable asset.

A brand new copy is "spendy" older ones in good condition not too bad.

 

[LVLAaron]

Or use this link for any thread. Internal or external

UN imperial screw thread calculator

theoreticalmachinist.com

I use that website every day. It's probably the main reason I have a computer in the shop.

 

[Skunce]

TBAC Centerfire Specs

I have that one printed out and laminated. It sits next to my lathe.

 

[DR_2297]

Or use this link for any thread. Internal or external

UN imperial screw thread calculator

theoreticalmachinist.com

I use the snot out of that.

 

[ELR LVR]

What is the tenon diameter for muzzle brakes with this size
theards - when turning the barrel-what is the diameter to start

thanks for the help

Ken

Be sure to sneak up on the that thread pitch dia.
I always shoot for 0.5975 (.5979 being max)

 

[DR_2297]

Pitch diameter is the critical measurement. Major diameter of external thread has a mile of allowance vs pitch dia. Invest in a set of thread micrometers.

 

[ELR LVR]

Pitch diameter is the critical measurement. Major diameter of external thread has a mile of allowance vs pitch dia. Invest in a set of thread micrometers.

Precisely!
And some Hardcore Machinists may dog this but I have a set of Shars thread pitch mic's
0.0001" resolution
I try to avoid cheap/china if possible but bought them in a pinch and was planning to upgrade later
Although, I have to say I was very impressed for their price, so impressed I see no need to upgrade yet
However this is the only Shars item I own so cannot comment on any of their other products...
The thimble threads are smooth as silk like a Mitutoyo, with no play, tight, rough spots
Came with all necessary anvils for different pitch threads

 

[DR_2297]

Precisely!
And some Hardcore Machinists may dog this but I have a set of Shars thread pitch mic's
0.0001" resolution
And I have to say I was very impressed for their price
The thimble threads are smooth as silk with no play, tight, rough spots
Came with all necessary anvils for different pitch threads

I have two of those. 0-1 and 1-2”. I cut every thread to pitch diameter. Once I get close I might start fitting things like 700 rems but in reality every thread I have cut and hit the pitch diameter on has fit properly. I traditionally try to work to 3A tolerances.

 

[ELR LVR]

I have two of those. 0-1 and 1-2”. I cut every thread to pitch diameter. Once I get close I might start fitting things like 700 rems but in reality every thread I have cut and hit the pitch diameter on has fit properly. I traditionally try to work to 3A tolerances.

Also agree, 3A for sure
For doing internal threads it helps to have a 3B internal thread gauge, like this
But for what we do, a guy could thread and make his own

 

[CCM]

Be sure to sneak up on the that thread pitch dia.
I always shoot for 0.5975 (.5979 being max)

I shoot for .596, I've had a few muzzle devices not want to screw on at .5975.

 

[CCM]

I made these and put them up above my lathe. Saves a ton of time compared to going to theoreticalmachinist 9 times a day.

 

[ELR LVR]

Yes have notes handy near your Lathe
I like to Map everything out before I start a job
Repetetives such as threading jobs, just never get erased