The Original 6-Flute Threaded Chatterless-Countersinks™





These countersink have a threaded back for use with separately ordered shanks. Ideal for use on radial drills, lathes, and Mills.
6-FLUTE THREADED CHATTERLESS-COUNTERSINKS High Speed Steel
HEAD    DIA OVERALL LENGTH THREAD SIZE SERIES # INCLUDED ANGLE
60° 82° 90° 100° 110° 120°
PART # PART # PART # PART # PART # PART #
             
3/4" 1-1/2" 3/8"-24   CK-3/4-T 03270 03280 03290 03300 03310 03320
7/8" 1-1/2" 3/8"-24   CK-7/8-T 03271 03281 03291 03301 03311 03321
1" 1-1/2" 1/2"-20   CK-1-T 03272 03282 03292 03302 03312 03322
1-1/4" 1-3/4" 5/8"-18   CK-1-1/4-T 03273 03283 03293 03303 03313 03323
1-1/2" 1-7/8" 3/4"-16   CK-1-1/2-T 03274 03284 03294 03304 03314 03324
1-3/4" 2-1/8" 3/4"-16   CK-1/34-T 03275 03285 03295 03305 03315 03325
2" 2-1/4" 3/4"-16   CK-2-T 03276 03286 03296 03306 03316 03326
2-1/2" 3" 1"-14   CK-2-1/2-T 03277 03287 03297 03307 03317 03327
3" 3-1/4" 1-1/4"-12   CK-3-T 03278 03288 03298 03308 03318 03328