theoldwizard1
Well-known member
... for small female thread metal fasteners that you press into plastic or wood that accepts a machine screw instead of just using a coarse thread screw.
*** bolts
https://duckduckgo.com/?t=ffab&q=***+bolt&atb=v226-1&iax=images&ia=images
and no this is not a joke
mcmaster or google
Not quite. *** bolts are used where you need matched male and female threads on a through fastener. Typically they have slotted screw heads on both ends. They are not threaded inserts.