better way of hanging your tunze

[weileong]

One of the PVC screw (the one nearer the rubber) holding my Tunze Stream broke off at the head and my tunze dropped into the tank.

Luckily was feeding and had the food timer activated. If that had happened when I am away then sure sand storm.

Was thinking of changing it to stainless steel bolts. Will that rust? Or maybe titanium bolts (very expensive.)

Had use the other existing screw temporary but it will be time when it breaks off as well. Better get a good solution.

See the picture for more details. The photo on the right is what's the current condition.

[limsh1999]

Likewise, it happened to me. Since then manage to fix it using stainless steel socket head cap screw. If I am not mistaken it should be size M6 right?

[Achilles Tang]

If its going to be permanent... try using a plier to tighten it.

It should hold.

[weileong]

I already used a screw driver to tighten it. Since it is hang onto the euro-bracing, all the force is acting on that screw. The "head" of that screw gave way and then the tunze just dropped to the floor. I'm surprised if no other pple with similar configuration gets the same problem.

limsh1999, did the stainless steel cap screw rush/corrode in salt-water?

Guess I'll have to go around hunting tomorrow.

[weileong]

Got the reply from Tunze.

reply as follows:

The screws are M5 thread. We do offer a black coated stainless steel screw set as part 3000.244, these are 10mm longer for bigger tanks. The screws that are included are graphite reinforced nylon and usually only break if over tightened. It is not necessary to use much force. Titanium should work very well.

End of Reply.

Hmmm... black coated stainless steel. Just wondering if they are the same as those black cap screws sold in the hardware shops. I remember those get rusty easily.

If I don't tighten the screws then you see the holder moving due to the tunze blowing.

[arcanehacker]

I tot even stainless steel will rust.. seen it happen so many times on appliances.. better get something else..

[alanseah]

well for screw, u tighten it but not over tighten it..because screw will get more tighten over the time.. that's is why if u screw something and then after a long time u try to unscrew it, u got problem as it's very tight...

[Joe_P]

Plastic screws overtightened will always fail....

Dun recommend any metal screws as when overtightened again a plastic counterpart might reshape the threading on your bracing holder....

Try those stores specialising in screws and see if you can find a M5 nylon screw thats long enough...... they do come as thumb screws but dunno if they come in such length...

[limsh1999]

Hi Weileong,

So far so good. No corrosion had been evident.............