raidersfan_5544 57 Posted March 29, 2010 Report Share Posted March 29, 2010 Well I have some good news and some bad news. The good news is after all the waiting I finally was able to pick up my Tromix 12in sbs and go shooting. She ran like a dream with zero problems. She ate everything I fed her from buck to cheap bird shot and patterned as good as my winchester 1300 home defender (s12 had a poly choke of course). Now the bad news, after we were done shooting I managed to do the dumbest thing to date. I left to go to the store and left my friend in charge of changing the tapco saw style grip that comes with the tromix to the ergo grip. I had faith that he would do a good job as he is pretty knowledgeable about guns. When I got back he managed to cross thread the bolt tony welds for the grip. Is there any way to fix a cross threaded bolt or am I going to have a new bolt angled and welded in? Or should I just tighten the existing nut and washer down even more because the new grip is close to being fitted? Thanks Quote Link to post Share on other sites
cfish 2 Posted March 29, 2010 Report Share Posted March 29, 2010 Is it threaded all the way in? If not you may be able to use a tap to clean up the threads that are bunged up. Is the grip nut just like a standard AK grip nut? I am not familiar with the tromix set up. Quote Link to post Share on other sites
Donkismash 81 Posted March 29, 2010 Report Share Posted March 29, 2010 Well I have some good news and some bad news. The good news is after all the waiting I finally was able to pick up my Tromix 12in sbs and go shooting. She ran like a dream with zero problems. She ate everything I fed her from buck to cheap bird shot and patterned as good as my winchester 1300 home defender (s12 had a poly choke of course). Now the bad news, after we were done shooting I managed to do the dumbest thing to date. I left to go to the store and left my friend in charge of changing the tapco saw style grip that comes with the tromix to the ergo grip. I had faith that he would do a good job as he is pretty knowledgeable about guns. When I got back he managed to cross thread the bolt tony welds for the grip. Is there any way to fix a cross threaded bolt or am I going to have a new bolt angled and welded in? Or should I just tighten the existing nut and washer down even more because the new grip is close to being fitted? Thanks send it back to Tony and MAKE your friend pay for it Quote Link to post Share on other sites
shades_of_grey 1,092 Posted March 29, 2010 Report Share Posted March 29, 2010 (edited) Damn, that sucks.. and was completely unnecessary. Whatever it costs to fix this, your friend needs to pay for it.. and reexamine what he really knows when it comes to firearms. Replacing parts on a Kalashnikov-type firearm is about as mechanically simple as it gets. Edited March 29, 2010 by post-apocalyptic Quote Link to post Share on other sites
raidersfan_5544 57 Posted March 29, 2010 Author Report Share Posted March 29, 2010 (edited) I wish I could send it back and make him pay for it but he has no job, nothing of worth, and is the brokest s.o.b. in the world. I already smacked him upside his head and told him I was going to sick my dog on him(pictured in my avatar) No cfish he didnt thread it all the way in but the threads are pretty messed up about 1/2in up the bolt. I dont know much about tapping but i am not sure if it could be saved. No its not the same grip nut normally used, he uses long bolts you would use on all thread. How bad do the threads have to be before they cant be fixed with a tap? Edited March 29, 2010 by raidersfan_5544 Quote Link to post Share on other sites
Paulyski 2,227 Posted March 29, 2010 Report Share Posted March 29, 2010 (edited) I wish I could send it back and make him pay for it but he has no job, nothing of worth, and is the brokest s.o.b. in the world. I already smacked him upside his head and told him I was going to sick my dog on him(pictured in my avatar) No cfish he didnt thread it all the way in but the threads are pretty messed up about 1/2in up the bolt. I dont know much about tapping but i am not sure if it could be saved. No its not the same grip nut normally used, he uses long bolts you would use on all thread. How bad do the threads have to be before they cant be fixed with a tap? I'll hop out to the shop to check my dies & see if my thread gauge has the correct pitch & edit with the correct thread pitch if I have it. Then you can just go buy a die & clean up the threads hopefully. Be back in a few minuets. EDIT: Okay, go to a hardware store & get an M6 X 1.0 METRIC DIE. That will clean up your threads if tony uses a factory AK thread pitch. I know guys use factory bolts in his TGs, so I would be surprised if yours is different. I didn't have a metric thread pitch gauge, so I tried diferent dies. M6 X 1.0 fit my grip bolt great. He may have screwed up the threads in the nut too, so you should pick up a tap while you're at it & clean the nut's threads too. Good luck & guilt your friend into a few beers often. Edited March 29, 2010 by Paulyski Quote Link to post Share on other sites
Paulyski 2,227 Posted March 29, 2010 Report Share Posted March 29, 2010 (edited) ^^Edited^^ No cfish he didnt thread it all the way in but the threads are pretty messed up about 1/2in up the bolt. I dont know much about tapping but i am not sure if it could be saved. No its not the same grip nut normally used, he uses long bolts you would use on all thread. How bad do the threads have to be before they cant be fixed with a tap? Hmmm.... I didn't notice the part about all-thread & a different nut... PM Bob Ash or Tony & ask what the thread pitch is. Or it looks like Gas Giant may get the answer... I love this place! Edited March 29, 2010 by Paulyski Quote Link to post Share on other sites
gtnichols 51 Posted March 29, 2010 Report Share Posted March 29, 2010 Yeah, that's your best bet, try to right the threads with a tap. I think Tony uses an off the shelf turnbuckle nut, I'll check the thread size and get back. Quote Link to post Share on other sites
cfish 2 Posted March 29, 2010 Report Share Posted March 29, 2010 Thats good he didn't go all the way up. I bet you'll be able to clean the threads and be back in business. Quote Link to post Share on other sites
getitat 609 Posted March 29, 2010 Report Share Posted March 29, 2010 (edited) Hello I would try to disassemble the gun and run a tap through from the top of the threads. If you attempt to "chase" the threads from the damaged (bottom) side you may very well screw-up the remainder of the un-damaged ones. Take a thread guage and determine what diameter and pitch it is exactly and go from there. New bolt (grip bolt) as well. JMHO... guido Edited March 29, 2010 by guido2 Quote Link to post Share on other sites
evlblkwpnz 3,418 Posted March 29, 2010 Report Share Posted March 29, 2010 What a f'd up way to learn a lesson. I can only imagine your disgust. Going from the top with a tap is your best bet. If you can't do that, you may be able to grind off the portion of the nut that has the damaged threads if there will be enough threads left to do the job. What about getting a new screw and running it through the top to clean it up? Use some Breakfree or something similar as a lubricant while you do it and it may work OK. I always go in 1/4 turn and back out 1 whole turn when threading, repeat until mission accomplished. Good luck with it. The moral of the story is.... TRUST NO ONE! Quote Link to post Share on other sites
nelson2183 0 Posted March 29, 2010 Report Share Posted March 29, 2010 Actually I think he's saying that the threaded bolt is welded to the receiver so he can't start from the top. The nut can be replaced with a new one but if the threaded male part is damaged and is welded to the receiver and can't be rethreaded with a die then wouldn't the next step be to remove the welded on male threaded part and replace it as well? Quote Link to post Share on other sites
bigj480 203 Posted March 29, 2010 Report Share Posted March 29, 2010 Hello I would try to disassemble the gun and run a tap through from the top of the threads. If you attempt to "chase" the threads from the damaged (bottom) side you may very well screw-up the remainder of the un-damaged ones. Take a thread guage and determine what diameter and pitch it is exactly and go from there. New bolt (grip bolt) as well. JMHO... guido This. Quote Link to post Share on other sites
raidersfan_5544 57 Posted March 29, 2010 Author Report Share Posted March 29, 2010 (edited) Thanks everyone for your replys. This site is truely the best. Well like mentioned above the grip bolt is welded to the receiver so I guess running a tap from the top is out of the question the only thing I could do is try to run a tap from the bottom to see if the threads will be fixable. If not I guess I could try to cut off the bad part of the threads and use a different nut. Tonight I am going to email tony and get the proper thread pitch unless someone here has a tromix and already knows? Thanks everyone again. Once she is back in running order I will have to get some pics posted. Edited March 29, 2010 by raidersfan_5544 Quote Link to post Share on other sites
gtnichols 51 Posted March 29, 2010 Report Share Posted March 29, 2010 If yours looks like this (see pics) the bolt and nut are threaded with standard 1/4 x 20 "Quarter twenty" and the bolt is welded on. Quote Link to post Share on other sites
Paulyski 2,227 Posted March 30, 2010 Report Share Posted March 30, 2010 Ohhh... shit. Die it & get a new nut if you're lucky, cut / grind it off & weld on a new bolt if you're not. Shitty. But at least it's a cheap weld. If you prep everything & get a grade 8 bolt, cut the top off & have a little template to show the correct angle, anywhere (even a kid at a muffler shop with downtime) can weld that for you. Just ask if they'll weld it for $10.00. That's what I used to do before I began welding. Muffler shops aren't precision welders, but they weld exhaust support studs all day long & could do it cheap. Quote Link to post Share on other sites
raidersfan_5544 57 Posted March 30, 2010 Author Report Share Posted March 30, 2010 Yup GG thats exactly what I have. Is it possible for a tap or die to work even if its the very start of the bolt that has damaged threads? If the threads cant be fixed you guys think I could grind it down or cut it with a dremel past the damaged portion(about 1/2 in) and just use a smaller nut w/lock washer? I want cutting out the old bolt and welding a new one in to be the last resort. Thanks Quote Link to post Share on other sites
csspecs 1,987 Posted March 30, 2010 Report Share Posted March 30, 2010 Seems that if you have extra bolt you could just cut the damaged area off. But hard to say just from a picture how long that bolt is. Quote Link to post Share on other sites
gtnichols 51 Posted March 30, 2010 Report Share Posted March 30, 2010 (edited) Yep you got it, that should work, there is a lot of threads on it, get a new nut and you should be good to go, either re-thread the bolt of cut it off a little. Yup GG thats exactly what I have. Is it possible for a tap or die to work even if its the very start of the bolt that has damaged threads? If the threads cant be fixed you guys think I could grind it down or cut it with a dremel past the damaged portion(about 1/2 in) and just use a smaller nut w/lock washer? I want cutting out the old bolt and welding a new one in to be the last resort. Thanks Edited March 30, 2010 by Gas Giant Quote Link to post Share on other sites
bigj480 203 Posted March 30, 2010 Report Share Posted March 30, 2010 There has to be a reason they do it like that, what are the benefits of such a setup? Quote Link to post Share on other sites
Paulyski 2,227 Posted March 30, 2010 Report Share Posted March 30, 2010 Yup GG thats exactly what I have. Is it possible for a tap or die to work even if its the very start of the bolt that has damaged threads? If the threads cant be fixed you guys think I could grind it down or cut it with a dremel past the damaged portion(about 1/2 in) and just use a smaller nut w/lock washer? I want cutting out the old bolt and welding a new one in to be the last resort. Thanks If you can save enough good threads to get any nut on it all the way, you're good to go. You don't need a 1/2" long nut for a pistol grip. They don't hold thousands of lbs. Quote Link to post Share on other sites
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