Quote Originally Posted by old kodger View Post
EVERY thing I have is older than 30 years. I had an electric drill fail the other day and after 46 years the brushes had the temerity to wear out, (trouble is, it's so bloody old that you can't buy brushes for it anymore).
But I have a good incident going just at the moment, the manufacturers of a piece of equipment I'm repairing, use 5mm x 1.25 pitch torx socket head bolts,........there ain't no such thread.
Not doubting your googling-ability; with 1.25mm is a radical pitch on a 5mm fastener. Common is 0.8, 0.9, 1.0, nor apparent taps or dies. Is it engaging plastic? How about self tapping imperial 10-32, or sheetmetal screw?

Here's a good combination of reference charts, useful when away from my laptop/ bookmarks or library.
https://www.armstrongmetalcrafts.com...Reference.aspx