Thread identification

Anybody know somewhere in Auckland I can get the thread identified on a rifle? I have a threaded Tikka .308 and the guy I bought it off didn't know what thread it was.

Post pictures wih a ruler beside it, probably someone on here will give it a good shot.

Other option is to go to blacks and get a selection of nuts with different threads and see what works

Or buy the kit yourself for future use?

Toledo Universal Thread Gauge Set - 301064 - Supercheap Auto

Or.

Toledo Thread Pitch Gauge Set 2 Pc - 301067 - Supercheap Auto

Any precision engineering machine shop will be able to do it in a couple of minutes.

I just send a picture to @veitnamcam :D

Where abouts in ak I'm on shore and could have a look is it at the muzzle end

On what? barrel end?

Do you own a digital calipers?

If so measure the OD and count how many threads per inch / 25mm there are. If you only have 10mm of threaded end how many threads per that dimension and tell us. From that we can look up the tables. If we also know what use then that is a cross reference. so 1/2inch OD 28 threads for say a 30cal rifle suppressor would be expected.

Thanks guys Photos attached



Attachment 88152Attachment 88153Attachment 88154Attachment 88155Attachment 88156

Quote:

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Originally Posted by steven

On what? barrel end?

Do you own a digital calipers?

If so measure the OD and count how many threads per inch / 25mm there are. If you only have 10mm of threaded end how many threads per that dimension and tell us. From that we can look up the tables. If we also know what use then that is a cross reference. so 1/2inch OD 28 threads for say a 30cal rifle suppressor would be expected.

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Yep that if you have calipers, measure od and measure the tops of the threads over as many as you can but say 5 or 10 to keep the maths simple.

Looking at that most likely its M14x1

Quote:

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Originally Posted by Square22

Thanks guys Photos attached



Attachment 88152Attachment 88153Attachment 88154Attachment 88155Attachment 88156

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Line the points of the caliper up with the tippy tops of the threads 10 threads apart and measure the diameter with the thick part of the caliper so you can hold it square without the caliper tips dropping into the thread on one side.

Quote:

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Originally Posted by cambo

Looking at that most likely its M14x1

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Mind you most threads don't usually measure over.

Holding the calipers with reasonably firm pressure

Front of thread: (14.12 sorry for blurry photo)

Attachment 88157

Back of thread: 14.15Attachment 88158

Im thinking 9/16 x? need the tips of the caliper on the tippy top of the threads to get the pitch, set caliper to 1/2" and see if it lines up neat on ten threads.... then it would be 9/16x20

Quote:

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Originally Posted by veitnamcam

Im thinking 9/16 x? need the tips of the caliper on the tippy top of the threads to get the pitch, set caliper to 1/2" and see if it lines up neat on ten threads.... then it would be 9/16x20

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9/16 24 kuz