Hi All,
I'm hot on the heels of fixing another Indy Nidec...this one has a shorted secondary diode and took me too long to find! Now the Nidec's use a "Screw" that's somewhere in the M3 x 0.50 area but aren't screws. They are threaded tubes with a multi-point head that also turns into a hex-like shaft. I've pretty much destroyed one getting it off. Normal Hex and torx or pentalobe don't work (just grind).
Here's a picture of the fastener,
it obviously takes a special "driver" but I cannot seem to use any terms on Google that come up with a TO-200 heatsink fastener like this. Now I was planning on reassembling with screws and nuts...but MANY MAJOR semiconductors on the Nidecs use these and the last one took me a screw extractor and 25 minutes to actually get it out (not fun).
Can anyone point me in the right direction to find this special hand-tool that allows me to remove and reinstall these fasteners? It's obviously some manufacturer's old joke...but I stopped laughing two fasteners ago.
No it's not T-6, not Hex, not a square drive, not a star drive, etc...tried the entire ifixit bit kit...I can temporarily JAM bit into it, but it's so soft that after a 1/4-1/2 of a turn...it starts grinding and not catching on the inside and the bit will spin (by hand of course).
Thanks for any help you can give.
NEED -> 