Drill a hole in a nut, thread on bolt and use nut as a guide. Use a drill press and vise of course. Two nuts can be locked together if the bolt moves around.
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I use the nut method, except I drill thru the nut and bolt at the same time, then reuse the nut as a guide if I have multiple bolts.
If your "bold" enough ? Drill some holes on your nut's, I mean one nut then thread it over your bolt along with the second nut to jam them. This way your nut's won't spin while your drill'n.
I think I tripped over mine today. I think that's what she said - "be careful you'll trip over your nuts"
This is out of control because of one fat finger !!!! Thanks for the suggestions. Johnney Gee you scare me !!
A Grinder is the secret Grind a flat piece on the thread so the drill bit doesn't walk , then clamp it in a drill vice. Where the hole comes out the other side, clean that up with a grinder so the nut threads on easily.
Why not just buy them pre-frilled from a bolt/nut supplier? Being close to Boeing, and having neighbors/friends who work for Boeing, I get bolts/nuts from them all the time. Some are made of lightweight material though (aluminum or titanium?). Just a thought. Although I personally have never drilled bolts/nuts, I do have a very high dollar, stand-up, drill press I bought for cheap from a cousin who needed the money. I've only used it a few times in 20 years. I am Butch/56sedandelivery.
Aircraft Spruce & Wicks Aircraft sell a good selection of drilled bolts that are relatively inexpensive. Just be careful how with the part number as they supply the bolts w/o holes or holes in the head or threaded end. Or as mentioned you may get what you need from an aircraft maintenance shop. I have bought a lot & need to order some more this week. Glenn
Just about every bolt on Model T's used castle nuts and cotter pins, so you can get old-style (thick head) drilled bolts from Model T parts suppliers. Lang's Old Car Parts has a good selection and great service.