Page 549 - Iscar

DC_2
DCNT (M8-M24)
Indexable Head Drills with Chamfering DC k7 DCONMS DF
Insert Mainly for Pre-Thread Holes
PL
SDL 6
LTA LS
Designation Th (1) Dnominal (2) DCN (3) DCX (4) DC_2 SDL_1 PL LTA DCONMS LS SSC (5)
DCNT 068-021-12A-M8 M8 6.80 6.5 6.90 13.50 21.00 1.24 43.8 12.00 45.0 6.5
DCNT 085-026-12A-M10 M10 8.50 8.5 8.90 15.50 26.00 1.55 48.5 12.00 45.0 8.0 INDEXABLE DRILLS
DCNT 102-030-16A-M12 M12 10.20 10.0 10.40 17.00 30.00 1.86 52.1 16.00 48.0 10.0
DCNT 120-035-16A-M14 M14 12.00 12.0 12.40 19.00 35.00 2.18 58.8 16.00 48.0 12.0
DCNT 140-039-16A-M16 M16 14.00 14.0 14.40 21.00 39.00 2.55 66.5 16.00 48.0 14.0
DCNT 175-042-20A-M20 M20 17.50 17.0 17.90 24.00 42.00 3.18 68.8 20.00 50.0 17.0
DCNT 210-048-25A-M24 M24 21.00 21.0 21.90 28.00 48.00 3.82 76.2 25.00 56.0 21.0
• Hole tolerance: D+0.05 in average conditions. However, it can be higher or lower according to machine and tooling conditions • Do not mount smaller drilling
heads other than the specified range of the drill body. • For user guide and cutting conditions, see page 544
(1) Used for standard thread size (2) Pre-thread hole diameter (3) Cutting diameter minimum (4) Cutting diameter maximum (5) Pocket size

Spare Parts
Designation
DCNT 068-021-12A-M8 SR 34-508 T-7/51 K DCN 6-9.99-Y
DCNT 085-026-12A-M10 SR 34-508 T-7/51 K DCN 6-9.99
DCNT 102-030-16A-M12 SR 34-508 T-7/51 K DCN 10-13.99
DCNT 120-035-16A-M14 SR 34-508 T-7/51 K DCN 10-13.99
DCNT 140-039-16A-M16 SR 34-508 T-7/51 K DCN 14-17.99
DCNT 175-042-20A-M20 SR 34-508 T-7/51 K DCN 14-17.99
DCNT 210-048-25A-M24 SR 34-508 T-7/51 K DCN 18-21.99
1. Drilling pre-thread blind holes: 2. Drilling pre-thread through holes:

Drilling with a 45° chamfer Drilling with a 45° chamfer

Pre-Thread Recommended Hole Diameters with DCNT Drills
M Head TR Head M Helicoil Head
Drill Designation Dia. Range Thread Head Dia. MF Head Dia. Thread Dia. Thread Dia.
DCNT 068-021-12A-M8 6.5-6.99 M8 6.8
MF10x1 8.99
DCNT 085-026-12A-M10 8.5-8.99 M10 8.5 TR10x1.5 8.6
MF10x1.25 8.8
MF11x1 10.0 TR12x2
MF12x1 10.99 10.2
DCNT 102-030-16A-M12 10.0-10.99 M12 10.2 M10 10.5
MF12x1.25 10.8 TR14x4 10.5
MF12x1.5 10.5
MF13x1 12.0 TR14x2 12.2
MF14x1 12.99
DCNT 120-035-16A-M14 12.0-12.99 M14 12.0 M12 12.5
MF14x1.25 12.8 TR16x4 12.3
MF14x1.5 12.5
MF14x1 14.0
DCNT 140-039-16A-M16 14.0-14.99 M16 14.0 MF16x1 14.99 TR18x4 14.3 M14 14.99
MF16x1.5 14.5
DCNT 175-042-20A-M20 17.0-17.99 M20 17.5 MF20x2 17.99 TR22x5 17.3
DCNT 210-048-25A-M24 21.0-21.99 M24 21.0 MF22x1 21.0
Dia. UNF Head UNC Head BSW Head Head
Drill Designation Range Thread Dia. Thread Dia. Thread Dia. BSF Thread Dia.
DCNT 068-021-12A-M8 6.5-6.99
DCNT 085-026-12A-M10 8.5-8.99 UNF3/8-24 8.5
DCNT 102-030-16A-M12 10.0-10.99 UNC1/2-13 10.8 BSW1/2-12 10.5 BSF1/2-16 10.99
DCNT 120-035-16A-M14 12.0-12.99 UNC9/16-12 12.3 BSF9/16-16 12.5
DCNT 140-039-16A-M16 14.0-14.99 UNF5/8-18 14.5
DCNT 175-042-20A-M20 17.0-17.99 UNF3/4-16 17.5
DCNT 210-048-25A-M24 21.0-21.99
NPT Head BSP Head Head UNJF Helicoil
Drill Designation Dia. Range Thread Dia. Thread Dia. UNEF Thread Dia. Thread Head Dia.
DCNT 068-021-12A-M8 6.5-6.99
DCNT 085-026-12A-M10 8.5-8.99 NPT1/8-27 8.5 G1/8-28 8.8 UNEF3/8-32 8.7 UNJF3/8-24 8.6
DCNT 102-030-16A-M12 10.0-10.99
DCNT 120-035-16A-M14 12.0-12.99
DCNT 140-039-16A-M16 14.0-14.99 NPT3/8-18 14.5 UNEF5/8-24 14.8 UNJF5/8-18 14.5
DCNT 175-042-20A-M20 17.0-17.99 NPT1/2-14 17.5 UNEF3/4-20 17.8
DCNT 210-048-25A-M24 21.0-21.99

545