julianf
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- 8,181
- Location
- devon, uk
I know i should be posting this in the 110 thread, but its a non-specific question, and, selfishly, i wanted greater exposure!
Ive got a plug snapped in the head.
To get measurements, i sawed through another plug, and took it apart in the same sort of way.
The one in the photo below is cut in two places, whilst my one in the head is just (so far as i know) is only broken in one place - just below the threaded section.
The threaded top and the core of the plug came out of the head, leaving the hollow body behind.
The hollow core is wider at the top (the shot above is from the base of the core section, where the tip of the plug attaches - i had to saw it there too to get out the middle section)
If youre still following me, this is the shot of the wide end -
so, 5.6mm ID.
The depth is aprox 31mm -
I had a look at some tapping charts, and an M6 thread had a drill hole listed at 5.5mm. Im wondering about tapping to this thread, screwing in a bolt, with a nut pre-threaded on to it, and then screwing down the nut against the head, to act as a crude puller.
But...
Can anyone tell me if there is a better thread to use? Given that you only get one go at this type of job, im happy to buy in whatever tap would give me the best chance of success.
Thank you.
Ive got a plug snapped in the head.
To get measurements, i sawed through another plug, and took it apart in the same sort of way.
The one in the photo below is cut in two places, whilst my one in the head is just (so far as i know) is only broken in one place - just below the threaded section.
The threaded top and the core of the plug came out of the head, leaving the hollow body behind.
The hollow core is wider at the top (the shot above is from the base of the core section, where the tip of the plug attaches - i had to saw it there too to get out the middle section)
If youre still following me, this is the shot of the wide end -
so, 5.6mm ID.
The depth is aprox 31mm -
I had a look at some tapping charts, and an M6 thread had a drill hole listed at 5.5mm. Im wondering about tapping to this thread, screwing in a bolt, with a nut pre-threaded on to it, and then screwing down the nut against the head, to act as a crude puller.
But...
Can anyone tell me if there is a better thread to use? Given that you only get one go at this type of job, im happy to buy in whatever tap would give me the best chance of success.
Thank you.