Screw

okcoky · Post by **okcoky** » Tue Apr 01, 2008 8:52 pm

whats the best stuff apart from brute forse to get a screw out as one of the ones holding my exhaust hanger on wont budge.It uses an allen key and i have put as much pressure as i dare on it and gave it a quick spray of wd 40.

Squiffythewombat · Post by **Squiffythewombat** » Tue Apr 01, 2008 9:11 pm

can u get some mole grips round the head?

drill it out?

chuxsta · Post by **chuxsta** » Tue Apr 01, 2008 9:15 pm

before attempting this put the alan key in and give it some taps with a hammer,, not to aggressive.. this can help free up the threads inside..
this is also a last resort,

and will need to replace the bolt after.

get a small hacksaw and just cut into in a few mill enough to get a flat head screw driver in....and again just lightly tap it with a hammer again..

dont cut to deep cause it will just ripp half the bolt head off..and if you dont cut deep enough the screwdriver will just chew up the top of the bolt..

or you can saw a slight notch in the top of it to get a flat head in and after inserting the flat head use a hammer to gently tap it in the anticlockwise route.. this can be enough break the tight bond the threads have made..

if its soft ally the above methods might not work if the bolt is in really tight and the threads are bound hard..

Stormin Ben · Post by **Stormin Ben** » Tue Apr 01, 2008 10:46 pm

Get a star head driver that is a size too large
You can then hammer this into the bolt head

Final option is to get an allen bit welded into the bolt

storminateacup · Post by **storminateacup** » Wed Apr 02, 2008 10:52 am

Get a can of that freezing stuff the plumbers use spray the nut at the back put an extention tube on the allen key, spanner on the nut that should shift it.

Ernie Cooley · Post by **Ernie Cooley** » Wed Apr 02, 2008 3:21 pm

http://cgi.ebay.co.uk/E-Z-EZ-GRIP-FRICT ... 0215990816

tis worth considering if you knacker the head of the screw, we sell it to Aerospace companies who swear by it.

Post by **sirch345** » Wed Apr 02, 2008 7:56 pm

okcoky,

If the hex headed bolt is made of stainless steel it could be that the thread has picked-up and locked it solid, in which case I doubt very much you will be able to undo it

So you will need to resort to another method to remove it

Normally if a S/Steel thread does pick-up, the bolt or nut usually moves a small amount first before locking up

Only a suggestion,

Chris.

okcoky · Post by **okcoky** » Wed Apr 02, 2008 7:58 pm

Thanks for the help guys,leaving it overnite with a lot of wd 40 helped.just made a click and then worked loose.Phew!

Squiffythewombat · Post by **Squiffythewombat** » Sat Apr 05, 2008 12:23 pm

Stormin Ben wrote:Get a star head driver that is a size too large
You can then hammer this into the bolt head

Thats a great idea, i would never of thought of that!

chaz · Post by **chaz** » Sat Apr 05, 2008 6:06 pm

sometimes it pays to try to tighten it, we allways try to undo them first and b*gger the head, if you try to tighten then it sometimes breaks the seal, dont forget that any threads externall to the nut could well have grown due to rust build up, a wire brush may help as well.

bikerpiker · Post by **bikerpiker** » Sun Apr 13, 2008 10:36 pm

I used to take seized bolts and even screws and bolts that were broken flush out most days in my last job.
If it was just seized,i would arc weld a small bit of round bar,maybe 8" long on to the end of it,the heat would usually free it off,and the bar was for leverage to unscrew it.
For a screw or bolt broken flush just keep dabbing the electrode to build it up enough to weld somethin on to,then do as above. Best to disconnect the battery first.
Works most times,better than easy-outs !
Done this recently on mates zzr.

VTR1000.ORG

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