ginster Posted March 19, 2018 Share Posted March 19, 2018 Hi, trying to loose the small allen screws of my JTV59 I`m afraid I must have wrecked either the allen screws (the small ones at the back of the bridge)or my allen key. The screws very tight indeed. Does anybody know the correct size and if it is imperial or metric? An answer is very much appreciated. 1 Quote Link to comment Share on other sites More sharing options...
silverhead Posted March 19, 2018 Share Posted March 19, 2018 I'm not sure of the exact size but one of the Allen keys that came with your guitar should fit exactly. Quote Link to comment Share on other sites More sharing options...
psarkissian Posted March 19, 2018 Share Posted March 19, 2018 For the brdige post adjust, it's 7/64 hex. Quote Link to comment Share on other sites More sharing options...
SteveFrance Posted March 20, 2018 Share Posted March 20, 2018 16 hours ago, ginster said: Hi, trying to loose the small allen screws of my JTV59 I`m afraid I must have wrecked either the allen screws (the small ones at the back of the bridge)or my allen key. The screws very tight indeed. Does anybody know the correct size and if it is imperial or metric? An answer is very much appreciated. It's the imperial size. I had the problem with my fender that i've lost the allen keys, impossible to fix my buzz matters and to find one in a DIY store..... The ones given with the variax solved this..... Quote Link to comment Share on other sites More sharing options...
ginster Posted March 20, 2018 Author Share Posted March 20, 2018 16 hours ago, psarkissian said: For the brdige post adjust, it's 7/64 hex. Thanks, but I aim for the little ones at the back of the bridge. Must be something around 1-1.3mm or 0.05 inch The delivered one must have been wrecked because it won't loosen the screw any more. It is slipping. Quote Link to comment Share on other sites More sharing options...
ginster Posted March 20, 2018 Author Share Posted March 20, 2018 4 hours ago, Steveclerget said: It's the imperial size. I had the problem with my fender that i've lost the allen keys, impossible to fix my buzz matters and to find one in a DIY store..... The ones given with the variax solved this..... Thank you, but the one given to me for the tiny screws (back of bridge)seems to be wrecked-it slips and won't loosen the screws any more. So I try to get a new one. Therefore I have to know the exact size. I estimate something about 1-1.3mm or 0.05 inch. Quote Link to comment Share on other sites More sharing options...
psarkissian Posted March 20, 2018 Share Posted March 20, 2018 JTV-59, back of the bridge adjust, 1.3mm hex. 1 1 Quote Link to comment Share on other sites More sharing options...
ginster Posted March 20, 2018 Author Share Posted March 20, 2018 4 minutes ago, psarkissian said: JTV-59, back of the bridge adjust, 1.3mm hex. Thanks a lot. Quote Link to comment Share on other sites More sharing options...
VAX700 Posted March 27, 2018 Share Posted March 27, 2018 The tiny set screws can be very tight, especially if you forget to loosen the strings first. If you don't, the hex key can strip the screw head slightly, and a new key won't fix the problem. I know... it happened to me. Now I use a slotted jeweller's screwdriver, small enough to fit diagonally across the hex pattern. It digs into the screw head and works well. But if you go that route, be very careful not to scratch your guitar. It's either that... or replace the screws. Quote Link to comment Share on other sites More sharing options...
ginster Posted March 27, 2018 Author Share Posted March 27, 2018 18 hours ago, VAX700 said: The tiny set screws can be very tight, especially if you forget to loosen the strings first. If you don't, the hex key can strip the screw head slightly, and a new key won't fix the problem. I know... it happened to me. Now I use a slotted jeweller's screwdriver, small enough to fit diagonally across the hex pattern. It digs into the screw head and works well. But if you go that route, be very careful not to scratch your guitar. It's either that... or replace the screws. Thanks for the constructive answer. I'm afraid that happened to my JTV, too me forgetting to loosen the strings before. Anyway I'll try again and if it fails I will follow your suggestion. Quote Link to comment Share on other sites More sharing options...
cruisinon2 Posted March 27, 2018 Share Posted March 27, 2018 38 minutes ago, ginster said: Thanks for the constructive answer. I'm afraid that happened to my JTV, too me forgetting to loosen the strings before. Anyway I'll try again and if it fails I will follow your suggestion. As said above, if you've stripped the head of the screw, a new hex key won't help you, but many times in a pinch, when a hex-head screw got stripped, I've used a star-key instead. Most multi-head screwdriver sets will have a few of these, along with the usual flat head, Phillips, and hex options... you'll just have to see which size fits. Chances are one of them will grab just fine, unless the hex head is so mangled that it's completely rounded out. Should be able to find a set for $10-$15... they're good to have around. No need to spend big $$ for heavy duty stuff... you're not working on a motorcycle, and the screws in question shouldn't be torqued to a million ft-lbs anyway. An inexpensive set will do just fine. Quote Link to comment Share on other sites More sharing options...
ginster Posted March 27, 2018 Author Share Posted March 27, 2018 40 minutes ago, cruisinon2 said: As said above, if you've stripped the head of the screw, a new hex key won't help you, but many times in a pinch, when a hex-head screw got stripped, I've used a star-key instead. Most multi-head screwdriver sets will have a few of these, along with the usual flat head, Phillips, and hex options... you'll just have to see which size fits. Chances are one of them will grab just fine, unless the hex head is so mangled that it's completely rounded out. Should be able to find a set for $10-$15... they're good to have around. No need to spend big $$ for heavy duty stuff... you're not working on a motorcycle, and the screws in question shouldn't be torqued to a million ft-lbs anyway. An inexpensive set will do just fine. Thank you! In case the tiny screws are wrecked and I have to get new ones. What are their specs, size or anything else to buy them anywhere. Imperial or metric? Thanks for your support! Quote Link to comment Share on other sites More sharing options...
VAX700 Posted March 31, 2018 Share Posted March 31, 2018 Glad that helped. I'm looking for replacement screws too. The following link seems to indicate 4-40 is the correct size https://line6.com/support/topic/7446-replacement-adjustment-screws-for-jtv-5989-bridge/ Maybe psarkissian can confirm. Proceed with patience and caution... and make sure the set screws have a tapered end to fit the v-groove in the bridge posts. 1 1 Quote Link to comment Share on other sites More sharing options...
ginster Posted April 1, 2018 Author Share Posted April 1, 2018 17 hours ago, VAX700 said: Glad that helped. I'm looking for replacement screws too. The following link seems to indicate 4-40 is the correct size https://line6.com/support/topic/7446-replacement-adjustment-screws-for-jtv-5989-bridge/ Maybe psarkissian can confirm. Proceed with patience and caution... and make sure the set screws have a tapered end to fit the v-groove in the bridge posts. Thanks a lot!! Quote Link to comment Share on other sites More sharing options...
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