looking for a mechanical method to attach sheet metal to thick steel
without welding, drilling, or tapping. preferably leaving behind
tamper-proof (or 'nearly so') heads. what's a guy ask for when he wants a
self-drilling, self-threading machine bolts that have heads on them that
snap off after a certain torque is reached?

Except for the not wanting to drill part it sounds like a good use for
"Drive Screws". It took me awhile to find them but McMaster Carr has them.
Search for "Type U Drive Screws" and scroll to the bottom of the page.

http://www.mcmaster.com

You just drill a hole and tap them in.

Best Regards,
Keith Marshall


"I'm not grown up enough to be so old!"


"dave" wrote in message
news:wEFcg.72436$IZ2.2865@dukeread07...

alternately, are there bolts made (just like above) except they'd have TWO
heads 'stacked' in an hourglass-like config, so that I'd have to CUT their
uppper heads off with my cutoff wheel, manually? (which'd be perfectly
fine with me)

alternately, what's the biggest diameter pop-rivet that can be 'manually
popped'? I mean like for which a tool that's "fairly readily available"
new -or- used?

thanks guys,

toolie