stevelee24 Posted December 21, 2011 Report Share Posted December 21, 2011 Does anyone know what a half inch tap and die set is in M numbers. all the sets are marked M6 M12 ect?? Quote Link to comment Share on other sites More sharing options...
beretta Posted December 21, 2011 Report Share Posted December 21, 2011 'M' is metric, not english, so you dont get half inch. Quote Link to comment Share on other sites More sharing options...
hcarlos Posted December 21, 2011 Report Share Posted December 21, 2011 (edited) as above is correct 1/2 inch is 12.5 mm so m12 is close but not the exact size you need try this link to ebay but you also need to know what size thread pitch you need. # http://www.ebay.co.uk/itm/Set-3-1-2-Inch-BSF-Taps-Carbon-Steel-/290551148055?pt=UK_BOI_Metalworking_Milling_Welding_Metalworking_Supplies_ET&hash=item43a632ae17 Edited December 21, 2011 by hcarlos Quote Link to comment Share on other sites More sharing options...
stevelee24 Posted December 21, 2011 Author Report Share Posted December 21, 2011 you dont happen to know the thread pitch for a standard ruger 10 22 barrel do you Quote Link to comment Share on other sites More sharing options...
dan-250 Posted December 21, 2011 Report Share Posted December 21, 2011 What you want will be 1/2 bsf- or bsw if it's a coarse thread . Where are you ? I have plenty of taps. No dies in that size tho. I have a die box at work. Quote Link to comment Share on other sites More sharing options...
deershooter Posted December 21, 2011 Report Share Posted December 21, 2011 DONT LISTEN TO THEM ITS 1/2 UNF Deershooter Quote Link to comment Share on other sites More sharing options...
beretta Posted December 21, 2011 Report Share Posted December 21, 2011 yep, UNF Quote Link to comment Share on other sites More sharing options...
stevelee24 Posted December 21, 2011 Author Report Share Posted December 21, 2011 Thing is i just bought a Ruger bull barrel with 1/2 UNF and my parker hale sound mod with 1/2 UNF wont fit. it screws almost all the way then becomes really tight and wont go any further. it fits my standard ruger barrel no problem screws straight on with no effort. ive cleaned both threads oiled ect but just cant get it past that point im puzzled Quote Link to comment Share on other sites More sharing options...
dan-250 Posted December 21, 2011 Report Share Posted December 21, 2011 I've got a unf tap, sorry didn't read the full post just got the first post. And presumed it was maybe for a standard bolt . Didn't realise for a gun barrel. Quote Link to comment Share on other sites More sharing options...
stevelee24 Posted December 21, 2011 Author Report Share Posted December 21, 2011 I've got a unf tap, sorry didn't read the full post just got the first post. And presumed it was maybe for a standard bolt . Didn't realise for a gun barrel. think its more the die i need to go over the barrel threads again the silencer threads are ok as they fit on my other barrel fine Quote Link to comment Share on other sites More sharing options...
dan-250 Posted December 21, 2011 Report Share Posted December 21, 2011 I'll have look for a die but tomorrow at work, can promise anything as most go in the die box. Quote Link to comment Share on other sites More sharing options...
Vermincinerator Posted December 21, 2011 Report Share Posted December 21, 2011 Steve, I suggest its the mod threads that are out of spec and you original barrel thread is undersize Run a tap up the mod before you go anywhere near the barrel mate that should be your last resort, i would even go as far as trying another mod before running a die over you barrel threads. You will be surprised how easy it is to **** up your barrel thread with a die if you do not know what you are doing and the die is incorrectly adjusted. Whereabouts are you? Ian. Quote Link to comment Share on other sites More sharing options...
Newsportshooter Posted December 21, 2011 Report Share Posted December 21, 2011 (edited) Steve, I suggest its the mod threads that are out of spec and you original barrel thread is undersize Run a tap up the mod before you go anywhere near the barrel mate that should be your last resort, i would even go as far as trying another mod before running a die over you barrel threads. You will be surprised how easy it is to **** up your barrel thread with a die if you do not know what you are doing and the die is incorrectly adjusted. Whereabouts are you? Ian. I would try putting the two barrel threads together first ie put the two barrels muzzle end to muzzle end and interlock the threads to check the pitch is the same ( the threads should intermesh together) if they do then as stated above its probably an over size barrel thread or an undersize mod thread or a combo of the two ( they could be both on max tolerance and you would get a tight fit. If the thread pitches are different (ie the two different barrles wont mesh together then, as you have stated that the mod fits the old barrel we can therefore assume that the old barrel is 1/2 unf and the new barrel will need to be looked at to establish the correct thread... Maybe you could call whoever you bought it from, you never know it could have a metric (or any for that matter) thread on it depending on whether it was factory threaded or aftermarket (in which case there may be issues with it if you were sold it and it hasnt been reproofed) Edited December 21, 2011 by Newsportshooter Quote Link to comment Share on other sites More sharing options...
stevelee24 Posted December 21, 2011 Author Report Share Posted December 21, 2011 (edited) i have had an electronic size gage on both the threads of my old barrel and the new one the threads on the new barrel where .3 of a millimetre bigger should not of made that much difference though. cheers for the help lads as you say i might try the 1/2 tap through the silencer first see how that does. need to get hold of one first im in Newcastle upon tyne Ian. Edited December 21, 2011 by stevelee24 Quote Link to comment Share on other sites More sharing options...
Newsportshooter Posted December 21, 2011 Report Share Posted December 21, 2011 i have had an electronic size gage on both the threads of my old barrel and the new one the threads on the new barrel where .3 of a millimetre bigger should not of made that much difference though. cheers for the help lads as you say i might try the 1/2 tap through the silencer first see how that does. need to get hold of one first im in Newcastle upon tyne vermin. I'm assuming you mean a caliper or micrometer when you say electronic gauge, either way if the thread pitch is different it wont matter a sod what the O/D or I/d of the thread is as these measure ments will be different between metric and imperial (English). If the mod binds up half way down the thread I would guess at the pitch being different (ie a metric thread rather than an imperial one) Basically what I'm saying is that you may chuck a die down the mod and it may even take out a little material (hopefully you'll get it straight or the mod will be staright in the bin) but even if material is taken out this wont change a thing if the pitch is different.... Do the threads match along the length of the thread (pitch) that should be your first check.. Quote Link to comment Share on other sites More sharing options...
deershooter Posted December 21, 2011 Report Share Posted December 21, 2011 can you not try the thread protector that came with the barrel on both rifles Deershooter Quote Link to comment Share on other sites More sharing options...
stevelee24 Posted December 21, 2011 Author Report Share Posted December 21, 2011 I'm assuming you mean a caliper or micrometer when you say electronic gauge, either way if the thread pitch is different it wont matter a sod what the O/D or I/d of the thread is as these measure ments will be different between metric and imperial (English). If the mod binds up half way down the thread I would guess at the pitch being different (ie a metric thread rather than an imperial one) Basically what I'm saying is that you may chuck a die down the mod and it may even take out a little material (hopefully you'll get it straight or the mod will be staright in the bin) but even if material is taken out this wont change a thing if the pitch is different.... Do the threads match along the length of the thread (pitch) that should be your first check.. yes mate checked its the same threads. im taking it in to my gun shop tomorrow they will sort it out i hope can you not try the thread protector that came with the barrel on both rifles Deershooter didn't get one mate Quote Link to comment Share on other sites More sharing options...
Bazooka Joe Posted December 21, 2011 Report Share Posted December 21, 2011 Run a tap up the mod before you go anywhere near the barrel Thing is i just bought a Ruger bull barrel with 1/2 UNF and my parker hale sound mod with 1/2 UNF wont fit. it screws almost all the way then becomes really tight and wont go any further. it fits my standard ruger barrel no problem screws straight on with no effort. ive cleaned both threads oiled ect but just cant get it past that point Steve, is the length of the thread the same on each barrel..? As above, the thread inside the Mod might just need cleaning. I had a same problem a while ago...the thread on my barrel, was longer than the thread on the previous barrel, which was fitted to the mod before I got it. These threads were clogged up with cordite, stopping the Mod fully screwing on my barrel. Quote Link to comment Share on other sites More sharing options...
stevelee24 Posted December 21, 2011 Author Report Share Posted December 21, 2011 yes mate checked its the same threads. im taking it in to my gun shop tomorrow they will sort it out i hope didn't get one mate yes same length mate and cleaned the sound mod before i tried aswell. Quote Link to comment Share on other sites More sharing options...
Vermincinerator Posted December 22, 2011 Report Share Posted December 22, 2011 Hi Newportshooter, Just for your information my friend, all ruger replacement barrels threaded for mods are 1/2"x 20 UNF. However Rugers QC leaves a lot to be desired and that of the mod manufacturers is non existant regarding thread tolerences. I have threaded many barrels to a class 2A fit ring gauge and only one has actual screwed into the mod i was fitting it for. all the others have had to be indivadually fitted. Ian. Quote Link to comment Share on other sites More sharing options...
Bazooka Joe Posted December 22, 2011 Report Share Posted December 22, 2011 yes same length mate and cleaned the sound mod before i tried aswell. Hi Steve, the only way to make sure the threads inside the Mod are clean is to run a tap through them... Quote Link to comment Share on other sites More sharing options...
stevelee24 Posted December 22, 2011 Author Report Share Posted December 22, 2011 cheers everyone ive admitted defeat and taking it to the gun shop let them sort it out Quote Link to comment Share on other sites More sharing options...
stevelee24 Posted December 22, 2011 Author Report Share Posted December 22, 2011 Sound Mod now fitted turns out there was a build up inside of cordite and my cleaning with a brush had not shifted it enough needed to be gouged out with a thin metal rod. even after this was still very tight but i got it on Quote Link to comment Share on other sites More sharing options...
Newsportshooter Posted December 22, 2011 Report Share Posted December 22, 2011 (edited) Hi Newportshooter, Just for your information my friend, all ruger replacement barrels threaded for mods are 1/2"x 20 UNF. However Rugers QC leaves a lot to be desired and that of the mod manufacturers is non existant regarding thread tolerences. I have threaded many barrels to a class 2A fit ring gauge and only one has actual screwed into the mod i was fitting it for. all the others have had to be indivadually fitted. Ian. As I'm sure I said it depends on whether its factor threaded (1/2" UNF) or threaded after purchase by a.n.other (maybe to match the spec of a mod someone had already bought in a metric size.....) you can get ruger barrels that arnt threaded and as such they may have been threaded by someone else at a later date - I was just getting the OP to cover the obvious bases first before letting rip with the tools, but hey ho the OP has checked and it is the same pitch so it must be a tolerance issue as you suggest. As for rugers Quality control no one would doubt it from a mass produced item. Edited December 22, 2011 by Newsportshooter Quote Link to comment Share on other sites More sharing options...
mark@mbb Posted January 26, 2012 Report Share Posted January 26, 2012 I have a 1/2" unf tap but i am in cheshire its lioke a nut and i use it to clean the thread on my 17 rem you are quite welcome to use it if you are near by Mark Quote Link to comment Share on other sites More sharing options...
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