Thread repair

[Noguzznoglory]

Have stripped oil filter cover bolt on a recently purchased Yamaha xt250. What was another brand of thread repair insert that seemed to be preferred over helicoil by the members. Threader then? Nutsert?
Bolt goes into a blind hole in the outer case. Already chased it with a tap and it’ll snug down but not tighten.
6mm x 1.0 is the fastener in question
Thanks in advance

[fotoguzzi]

Timesert.?

[Noguzznoglory]

thanks for the info. probably go helicoil. timeserts have a flange on the outer edge and the hole i have to repair has a groove for an o ring cut around the top edge.
believe that'll make the timesert incompatible

[wirespokes]

I think the o-ring would have a better chance of sealing with a timesert. The trick is getting the depth just right.

I guess it depends what diameter o-ring we're talking here. If it's larger than the diameter of the hole needed for the helicoil, then it's not a problem.

[Tom H]

I think I would just Helicoil it.

There is another insert type thread repair. McMaster sells them. For M6 you drill about an M8 hole and thread it the correct size. Then take the straight, no flange, insert and thread it in. The insert has pins, that when the insert is threaded in, you use the included tool and drive the pins in locking the insert.

Good luck,
Tom

[pressureangle]

I hate helicoils, but in this case it's probably best.

Timesert is always the first choice, but being a blind hole you'll have some trouble with length of tap and depth of insert if the hole isn't pretty deep. Getting the flange square and level isn't assured either unless you're well-practiced. Helicoils are pretty straightforward, and if I have to use them I red loctite them in so they don't tend to slinky when you catch a thread. Use a bottom tap for your final thread. It sounds silly, but if you have a dremel take a little time to polish up the end you'll thread into, it's far less likely to catch and dislodge the insert.

[Chuck in Indiana]

some bright spark in the USA used a 1/4" bolt. 

Hey! We're 'Mericans here.. don't need none of them sissy metric bolts.
 

[Canuck750]

I used Helicoil for years but lately I have been going with Keyserts

https://www.lawsonproducts.com/Keysert/Locking-Thread-Insert-Kit/89810.lp

For spark plug repair I use these from E-Z Lock

https://www.ezlok.com/e-z-lok-solid-wall-threaded-inserts-automotive

[Mike Tashjian]

I rarely need an insert so buying a brand name kit is not first on my list.   I have bought a couple of the cheaper kits which are of the heli-coil style and have found them to work fine.  They can be found at almost any auto store and on line for twenty dollars or less.  They usually have a assortment of inserts along with the right drill and insert tool.  Installed correctly I have found them to hold specified torquing without any issues.   

[jcctx]

Why not the appropriately sized self tapping screw and be done with it???

[blackcat]

I have found that Helicoils fail if they are used for high torque applications. Not so with a Time-Sert, those things never back out in my experience.

[Luke]

This is the next best thing to an oil thread.

[Mike Tashjian]

There are many solutions for stripped threads with some being better than others.  Fixing a stripped 6mm screw in a oil filter cover is not a high torque application.  But you are going to want a fastener that can come out more than a few times. So the self tapper is not going to be a great choice as they usually don't cut good threads.  Two or three uses and you may be looking for that next larger size.  I like to make repairs that are as good as new or better and in this case any style insert will do that. 

[LesP]

This is the next best thing to an oil thread.

Only for the folk who embrace, just a little more on that fastener.

Inserts length goes right up to 3 times the diameter, insert to suit the application. 

https://www.thorintl.com/Drill-Sizes-HeliCoils-Metric.shtml

[Kiwi_Roy]

Consider also using a stud in place of the bolt, that you can lactate in then all the wear and tear takes place on the nut.
This is the normal procedure for loop generator brackets.

[moto]

Consider also using a stud in place of the bolt, that you can lactate in ...

Pullease, spare me that image!

Moto

[Dirk_S]

Consider also using a stud in place of the bolt, that you can lactate in...

Canadian methods are weird.