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Helicoil M4x0.8?


tryabean

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hey all absolutly destroyed my rear thread the other day so i got the magura bolt got out me thread gauge and found that my bolt is 0.8 but i canot find a helicoil at the size of m4x0.8 any one know where i can get one?

any help will be appreciated :)

ps iv asked at work and the lads are on the look :)

but still any help :)

michael x

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If you're still looking for a thread repair kit for Magura 4 bolt mounts (Correct size being M5 x 0.8), I bought one over the phone from the chaps below;

http://www.wti-fasteners.co.uk/productslist.php?prodcatid=6

The cheaper kit with the "Screwdriver" type insertion tool. The posh name for it is "M5 x 0.8mm x 1.5D (depth of the insert i.e. 7.5mm) thread repair kit with Free running Wire Thread Inserts" Note that "Helicoil" is a tradename from one manufacturer (like we call Vacuum cleaners Hoovers). Every man and his dog seems to make them now. I reckon that the generic name "Wire Thread Insert" is a better way of talking about them since it perfectly describes what they're about. The Wire Thread Inserts (WTIs) are usually made from Stainless Steel across manufacturers. This kit all comes in a natty little storage box, and features all the key stuff you need namely:

  1. 5.2mm Dia drill bit to prepare the hole
  2. Tap tool to add the thread for the Wire Thread Insert
  3. Screwdriver tool to screw the WTI in with
  4. Steel rod to snap off the tang (used for screwing the WTI in) once in position
  5. 10 WTIs

It cost me £21 for the kit and £2.50 for postage.

You can see from the brake pads added for scale, that the box is smaller than you may expect. I just need a little tap wrench to put onto the tap tool and a spare hammer to use with the steel rod to snap off the tang.

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^Have to buy: Tap wrench needed to hold the tap

I happened to have one already, RS 546-275, £11.30 from www.rswww.com Maybe you can pick up a cheaper one at a local hardware shop.

post-201-1215552660_thumb.jpg

Hope this helps!

Steve

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technically if your a hardman, you can just use your hand to hit the thing that removes the tang(and also, if you lose the tang removal tool, you can just turn the screwdrive 90, and use that.

got mine from this place

bml hayley

for about £15, they also sell packs of 50 inserts for like £2-£3. but they got places all over the country, so may be worth seeing if they got one near you(not sure if they post, as being a 15 metre walk from work, ive always gone into collect)

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