Originally Posted by sealteamz6
I purchased those screws you posted. Thank you very much for that. I couldn't find those before.
Good. I presume they're the same size (might be 4mm or 3mm). I would not use the thread locker with these. I also recommend you test them in that board's mounting spot (leave the board off during the test) screwing them into the holes by hand until they bottom out to make sure the threads are correct, and make sure they don't bind or bottom out when you later install the board.
I'm still wondering why your screw broke off well below the head since you said you didn't crank it down too hard. The stub looks smooth enough that you can get an accurately centered center punch crater in dead center.
I am borrowing a dremel from a coworker.
Good. It's much easier to hold steady when doing precision drilling. If you happen to lean to the side while drilling with that small of a drill bit it easily snaps so remember to be careful.
Randy what brand of extractor do you have? I am struggling to find the right sizing and brand that has ones that small.
I've had this kit for over 30 years and it was made by Hanson, but it has a lot of extractors and taps and dies and drill bits.
Hanson is still around and they have a few kits with less bits and no tap-handle tool that i see online. The handle i use with the smaller extractor is just a regular Tap Wrench Handle but you have to have one small enough to tighten down on the smaller extractor bits. I have a few different small sizes so i always have the right handle. The larger handle won't tighten down enough on the smaller bits.
Below is a description for the Hanson 53535 kit.
I think you'll need to use the size #1
Extractor. Be sure to use the correct drill bit size.
Screw Extractor Set Hanson 53535 Spiral Screw Extractor Set, 5 Piece
for 3/32" - 5/32", 2.5mm - 4mm, #3
for 5/32" - 7/32", 4mm - 6mm, #6
for 7/32" - 9/32", 6mm - 8mm, #1
for 9/32" - 3/8", 1/8" NPT, 1/8" BSP, 8mm - 10mm
for 3/8" - 5/8", 1/4" NPT, 1/4" BSP, 10mm - 16mm
Set contains extractors #1
Left-hand spiral design, for removal of broken studs, bolts, screws and fittings
High carbon steel, square drive
Extractor size and recommended drill bit size are etched on each extractor
Hanson 53535 kit: eBay item number for instance is 112784981567
There's also a kit that comes with the drill bits: eBay item number 114007007898
Tap Wrench: eBay item number 254462731950 (but they have 3 sizes)
Edit - here's another interesting kit - one side of the bit has a short drill eBay item number: 352905424496