Piper 4-flute countersinks cut clean, chatter-free chamfers in steel, alloy and plastics. Five included angles — 60°, 82°, 90°, 100° and 120° — across nine body sizes.

Model	Angle	Max dia.	Shank dia.
CS60-260	60°	.260"	.200"
CS60-323	60°	.323"	.250"
CS60-385	60°	.385"	.250"
CS60-510	60°	.510"	.375"
CS60-635	60°	.635"	.375"
CS60-760	60°	.760"	.500"
CS60-885	60°	.885"	.500"
CS60-1010	60°	1.010"	.500"
CS60-1260	60°	1.260"	.500"
CS82-260	82°	.260"	.200"
CS82-323	82°	.323"	.250"
CS82-385	82°	.385"	.250"
CS82-510	82°	.510"	.375"
CS82-635	82°	.635"	.375"
CS82-760	82°	.760"	.500"
CS82-885	82°	.885"	.500"
CS82-1010	82°	1.010"	.500"
CS82-1260	82°	1.260"	.500"
CS82-1510	82°	1.510"	.625"
CS90-260	90°	.260"	.200"
CS90-323	90°	.323"	.250"
CS90-385	90°	.385"	.250"
CS90-510	90°	.510"	.375"
CS90-635	90°	.635"	.375"
CS90-760	90°	.760"	.500"
CS90-885	90°	.885"	.500"
CS90-1010	90°	1.010"	.500"
CS90-1260	90°	1.260"	.500"
CS90-1510	90°	1.510"	.625"
CS100-260	100°	.260"	.200"
CS100-323	100°	.323"	.250"
CS100-385	100°	.385"	.250"
CS100-510	100°	.510"	.375"
CS100-635	100°	.635"	.375"
CS100-760	100°	.760"	.500"
CS100-885	100°	.885"	.500"
CS100-1010	100°	1.010"	.500"
CS100-1260	100°	1.260"	.500"
CS120-260	120°	.260"	.200"
CS120-323	120°	.323"	.250"
CS120-385	120°	.385"	.250"
CS120-510	120°	.510"	.375"
CS120-635	120°	.635"	.375"
CS120-760	120°	.760"	.500"
CS120-885	120°	.885"	.500"
CS120-1010	120°	1.010"	.500"
CS120-1260	120°	1.260"	.500"

Piper Tools has manufactured machine tool accessories in Australia since 1937 and is credited with developing one of the world’s first lathe live centres. Now part of ALCT, every Piper tool is backed by the same workshop and the same machinists.

90°

Piper 4-Flute Countersink

Piper Cross-Hole Countersink