C3O1U1N1T1E1R1S1I1N1K5I1N1G2
21 points
COUNTERSINKING is validvalid
COUNTERSINK, to set the head of a fastener at or below surface level [v]
COUNTERSINK, to make a countersink on (a hole) [v]
COUNTERSINK, to set the head of a fastener at or below surface level [v]
COUNTERSINK, to make a countersink on (a hole) [v]