Maximize Productivity with Combination Tools

3N1 countersinks combine drilling, countersinking, and chamfering into a single operation, reducing cycle time and tool changes.

The 3N1 design features a precision drill point that creates the pilot hole while the countersink body follows to create the chamfer - all in one pass. This eliminates the need for separate drilling and countersinking operations.

3N1 Drill operation
Drill

Creates pilot hole

3N1 Countersink operation
Countersink

Forms chamfer

3N1 Chamfer operation
Chamfer

Deburrs edges

3N1 Drill Point Countersinks - Three Operations in One
Benefits
  • Reduced cycle time
  • Fewer tool changes
  • Consistent results
  • Lower tooling cost
  • Quick-change options

3N1 HSS Drill Point Countersinks

Combination drill-countersink in premium M2 HSS. Available in all 6 standard included angles.

Body Dia. Shank Dia. OAL Tool Name 60° EDP 82° EDP 90° EDP 100° EDP 110° EDP 120° EDP
1/8"1/8"1-5/8"3N1-1/8014730148801503015180153301548
3/16"3/16"1-1/2"3N1-3/16014740148901504015190153401549
1/4"3/16"1-1/2"3N1-1/4014700148501500015150153001545
1/4"1/4"2"3N1-1/4-1/4014640146501466014670146801469
5/16"1/4"1-3/4"3N1-5/16014750149001505015200153501550
3/8"1/4"1-3/4"3N1-3/8014710148601501015160153101546
1/2"3/8"2-1/8"3N1-1/2014720148701502015170153201547
5/8"3/8"2-3/8"3N1-5/8014760149101506015210153601551
3/4"1/2"2-11/16"3N1-3/4014770149201507015220153701552
7/8"1/2"2-13/16"3N1-7/8014780149301508015230153801553
1"1/2"2-13/16"3N1-1014790149401509015240153901554

3N1 Carbide Drill Point Countersinks

Solid carbide construction for maximum tool life. Available in all 6 standard included angles.

Body Dia. Shank Dia. OAL Tool Name 60° EDP 82° EDP 90° EDP 100° EDP 110° EDP 120° EDP
1/8"1/8"1-1/2"3N1-1/8-W019030192301943019630198302003
3/16"3/16"1-1/2"3N1-3/16-W019040192401944019640198402004
1/4"3/16"1-1/2"3N1-1/4-W019050192501945019650198502005
1/4"1/4"2"3N1-1/4-W-1/4019060192601946019660198602006
5/16"1/4"2-1/4"3N1-5/16-W019070192701947019670198702007
3/8"1/4"2-1/4"3N1-3/8-W019080192801948019680198802008
1/2"3/8"2-1/2"3N1-1/2-W019090192901949019690198902009
5/8"3/8"2-5/8"3N1-5/8-W019100193001950019700199002010
3/4"1/2"2-3/4"3N1-3/4-W019110193101951019710199102011
7/8"1/2"2-7/8"3N1-7/8-W019120193201952019720199202012
1"1/2"3"3N1-1-W019130193301953019730199302013

3N1 Double-Ended Countersinks

Two drill point countersinks in one tool. When one end wears, flip for a fresh cutting edge.

HSS Double-Ended

Body Dia. OAL Drill Point Tool Name 60° EDP 82° EDP 90° EDP 100° EDP 110° EDP 120° EDP
1/8"1-1/2".047"3N1-1/8-DE015850159501605016150162501635
3/16"1-7/8".078"3N1-3/16-DE015860159601606016160162601636
1/4"2".109"3N1-1/4-DE015870159701607016170162701637
5/16"2-1/8".125"3N1-5/16-DE015880159801608016180162801638
3/8"2-1/2".141"3N1-3/8-DE015890159901609016190162901639
1/2"3".219"3N1-1/2-DE015900160001610016200163001640
5/8"3-1/4".250"3N1-5/8-DE015910160101611016210163101641
3/4"3-1/2".313"3N1-3/4-DE015920160201612016220163201642

Carbide Double-Ended

Body Dia. OAL Drill Point Tool Name 60° EDP 82° EDP 90° EDP 100° EDP 110° EDP 120° EDP
1/8"1-1/2".047"3N1-1/8-W-DE016500167001680016900170001710
3/16"2".078"3N1-3/16-W-DE016510167101681016910170101711
1/4"2".109"3N1-1/4-W-DE016520167201682016920170201712
5/16"2-1/8".125"3N1-5/16-W-DE016530167301683016930170301713
3/8"2-1/2".141"3N1-3/8-W-DE016540167401684016940170401714
1/2"3".219"3N1-1/2-W-DE016550167501685016950170501715
5/8"3-1/4".250"3N1-5/8-W-DE016560167601686016960170601716
3/4"3-1/2".313"3N1-3/4-W-DE016570167701687016970170701717

3N1-QC Quick-Change System

3N1 Quick-Change with Long Shank

Interchangeable threaded drill point countersink heads for use with FM-series shanks. Quick tool changes without removing the holder from the spindle. Available in 5 included angles: 60°, 82°, 90°, 100°, 120°.

3N1-QC Heads

Body Dia. OAL Drill Point Thread Tool Name 60° EDP 82° EDP 90° EDP 100° EDP 120° EDP
3/8"1-5/32".141"1/4"-283N1-QC-3/80180001810018200183001840
7/16"1-5/32".188"1/4"-283N1-QC-7/160180101811018210183101841
1/2"1-5/32".219"1/4"-283N1-QC-1/20180201812018220183201842
5/8"1-5/32".250"1/4"-283N1-QC-5/80180301813018230183301843
3/4"1-13/16".313"3/8"-243N1-QC-3/40180401814018240183401844

FM-Series Shanks (for QC Heads)

Thread Shank Dia. OAL Shank Name EDP
1/4"-281/4"4"FM-2 Shank34235
1/4"-281/2"6"FM-2x6 Shank34239

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