2007-12-12 18:44:42 · 9 answers · asked by m.chan99 1 in Cars & Transportation ➔ Maintenance & Repairs
If there is a little of the bolt protruding you can weld a nut on the bolt or grind off the remainder of the bolt and take out the other bolts,take off the component and use a pair of vise grips or pipe wrench to remove the culprit bolt.last resort drill out the bolt with left hand drill bits,use a center punch and start with a small bit and then use progressively larger bits,the heat and left hand friction will screw out the bolt
2007-12-12 21:26:43 · answer #1 · answered by easy 4 · 0⤊ 0⤋
If the bolt head has sheared off flush with the surface you have no option but to drill the bolt out. Please note that this has to be done very carefully. If you do not drill right in the centre of the bolt you will damage the threads.
If however you do damage the threads, there is a kit called a rethread kit or Heli-coils. This kit gives you a drill and a tap for rethreading the hole. The tap is slightly bigger than the original threads and then the replacement coil which you get in the kit returns them to the original size. The replacement coils are steel and so normally create a much stronger thread.
If however there is a section of bolt protruding still you maybe able to get a grip of it with a stud extrator or a flat jaw type of vice-grip .
Depending on what the bolt has broken off inside, you could heat up the area around the bolt to make the job of removing the stud easier. This expands the area around the bolt and loosens its grip.
Heli coils or re-thread kits should be available from a good motor parts store or an engineering supply store. Approximate cost is £30 and the kit comes with normally 10 replacement coils. If you cannot get them locally WTI Fasteners in Derbyshire make them and I'm sure will send you whatever size you need. 01283 215588.
Good luck.
2007-12-12 20:23:05 · answer #2 · answered by JPM 2 · 0⤊ 0⤋
Is the this a hex head bolt, allen head bolt, phillips head screw, torx head screw or a flat head screw? If it is a true bolt and not a screw, has the head twisted off or has the shoulders just rounded off. Id just rounded off Sears carries a new tool made for that very problem. Its called a "bolt out". They work really well. If you have twisted of the head, you don't have much choice other than to drill out the center of the bolt and use an "Easy-Out" The proper drill bit size will be marked on the easy out. Now if you are talking about a screw. (i.e. something smaller than 1/4" dia.) you will need to look into using a tool called a screw out. This works only if the head of the screw is still there. (Phillips head that the inside shoulders have been rounded off) If not, you will need to go back to the old drill and tap.
Good luck
2007-12-12 21:13:09 · answer #3 · answered by Cowboy Roy 3 · 0⤊ 1⤋
The folks that are telling you to drill it out are incorrect. If this screw is in a part that is threaded you will destroy the threads in that part.
I would recommend using either an EZ-Out or a Grabbit Extractor, both of which are available at Home Depot, Orchard Supply Hardware, Home Base, Lowes, or any Auto Parts Stores in your area.
Just be sure to closely follow the instructions because there is a real risk you can damage the part you are trying to save.
I have a set of Grabbit Extractors in my box. I like them better than the EZ-Out because there is no drilling involved. Just understand they are not designed for large bolts like Cylinder Head Bolts or Manifold Bolts. For those you will need the EZ-Out.
Good Luck!
2007-12-12 19:08:02 · answer #4 · answered by Teknoman Saber 5 · 1⤊ 0⤋
You need a drill and what is called an ez-out. That goes in the hole you drilled and hopefully backs the bolt out, but I never seen a bolt with a screw head.
2007-12-12 18:53:37 · answer #5 · answered by Anonymous · 1⤊ 0⤋
You can buy reverse tap outs (bolt extractor or something like that). Their basically drill bits with reverse threads. So when you use them you have your drill set for reverse (counter clock wise) and drill into the bolt with one of these tap outs and when it catches at the right point it will unscrew the bolt. Good luck!
2007-12-12 18:55:32 · answer #6 · answered by Daniel 3 · 0⤊ 0⤋
Use a drill bit just a little smaller than the bolt and drill it out.
2007-12-12 18:51:08 · answer #7 · answered by frozen339 2 · 0⤊ 1⤋
I've heard of drilling it out, but you'll need a drill bit that'll be good enough to drill into the bolt.
2007-12-12 18:52:03 · answer #8 · answered by bigchucka 4 · 0⤊ 1⤋
pair of vice grips always work if you have room to use them.
2007-12-13 13:17:30 · answer #9 · answered by mister ss 7 · 0⤊ 0⤋
look for something called an "easy out"
http://www.brokentap.com/easy-outs.html
2007-12-12 18:54:29 · answer #10 · answered by jon_mac_usa_007 7 · 1⤊ 0⤋