blind holes
Pits, not tunnels
Blind holes are holes that don't go all the way through a material—drilled or bored to a specific depth but closed at one end.
The term is standard in machining, woodworking, and engineering, distinguishing these from through holes that pierce completely: The bolt seats in a blind hole so it doesn't show on the other side.
- threadedPassed through an opening
- tapValve controlling liquid flow
- countersinkConical recess for fasteners
- drillingHole-making by rotation
- boreholeDrilled underground passage
machining · counterbore · workpiece · lathe · thermoplastic · reamer · ceramic · composite material · machinability · deburring tool · milling · depth gauge · hardness · alloy steel · cast iron · ductility · tensile strength · taps