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AYVNACOTDHSS-CO Taper Shank Drill 6602 COTDSold0pcsNACHI 6602 COTD is the cobalt (HSS-CO) Morse taper shank drill. Cobalt raises red hardness, which is what large-diameter stainless drilling needs; for ordinary steel 602 TD is enough and costs less. It is made from cobalt high speed steel (HSS-CO), uncoated. Sizes cover diameter 7~33mm, flute length 75~200mm, overall length 155~345mm, 249 in total, made in Japan. Why is large-diameter stainless hard? The bigger the hole the higher the cutting speed, concentrating heat at the edge - cobalt is there to take it. It suits carbon and alloy steel, stainless steel, copper, aluminium and other non-ferrous metals with workpiece hardness up to HRC40. Typical uses: large-hole drilling in stainless, thick SUS plate, and roughing in heat-resistant alloys. The family also includes the uncoated 602 TD (diameter 7~100mm, rated to HRC30), the TiN coated 620P GTD (diameter 7~32mm) and the long-series 650 LTD (flute length 150~450mm).

Product Categories

Cutting Tools Drill Morse Taper Shank Drill

HSS-CO Taper Shank Drill 6602 COTD

NACHI 6602 COTD is the cobalt (HSS-CO) Morse taper shank drill. Cobalt raises red hardness, which is what large-diameter stainless drilling needs; for ordinary steel 602 TD is enough and costs less.

Specifications (249 items)

Dia.

Flute length

Overall length

Shank dia.

Depth ratio (×D)

7~7.9

75~82

155~162

MT1

10.38~10.99

Expand this group (10 specs)

Part No.	Dia.	Flute length	Overall length	Shank dia.
AYVNACOTD7.0	7	75	155	MT1
AYVNACOTD7.1	7.1	78	158	MT1
AYVNACOTD7.2	7.2	78	158	MT1
AYVNACOTD7.3	7.3	78	158	MT1
AYVNACOTD7.4	7.4	78	158	MT1
AYVNACOTD7.5	7.5	78	158	MT1
AYVNACOTD7.6	7.6	82	162	MT1
AYVNACOTD7.7	7.7	82	162	MT1
AYVNACOTD7.8	7.8	82	162	MT1
AYVNACOTD7.9	7.9	82	162	MT1

8~9.9

82~95

162~178

MT1

9.6~10.49

Expand this group (20 specs)

Part No.	Dia.	Flute length	Overall length	Shank dia.
AYVNACOTD8.0	8	82	162	MT1
AYVNACOTD8.1	8.1	85	168	MT1
AYVNACOTD8.2	8.2	85	168	MT1
AYVNACOTD8.3	8.3	85	168	MT1
AYVNACOTD8.4	8.4	85	168	MT1
AYVNACOTD8.5	8.5	85	168	MT1
AYVNACOTD8.6	8.6	88	172	MT1
AYVNACOTD8.7	8.7	88	172	MT1
AYVNACOTD8.8	8.8	88	172	MT1
AYVNACOTD8.9	8.9	88	172	MT1
AYVNACOTD9.0	9	88	172	MT1
AYVNACOTD9.1	9.1	92	175	MT1
AYVNACOTD9.2	9.2	92	175	MT1
AYVNACOTD9.3	9.3	92	175	MT1
AYVNACOTD9.4	9.4	92	175	MT1
AYVNACOTD9.5	9.5	92	175	MT1
AYVNACOTD9.6	9.6	95	178	MT1
AYVNACOTD9.7	9.7	95	178	MT1
AYVNACOTD9.8	9.8	95	178	MT1
AYVNACOTD9.9	9.9	95	178	MT1

10~11.9

95~108

178~192

MT1

9.08~9.7

Expand this group (20 specs)

Part No.	Dia.	Flute length	Overall length	Shank dia.
AYVNACOTD10.0	10	95	178	MT1
AYVNACOTD10.1	10.1	98	182	MT1
AYVNACOTD10.2	10.2	98	182	MT1
AYVNACOTD10.3	10.3	98	182	MT1
AYVNACOTD10.4	10.4	98	182	MT1
AYVNACOTD10.5	10.5	98	182	MT1
AYVNACOTD10.6	10.6	102	185	MT1
AYVNACOTD10.7	10.7	102	185	MT1
AYVNACOTD10.8	10.8	102	185	MT1
AYVNACOTD10.9	10.9	102	185	MT1
AYVNACOTD11.0	11	102	185	MT1
AYVNACOTD11.1	11.1	105	188	MT1
AYVNACOTD11.2	11.2	105	188	MT1
AYVNACOTD11.3	11.3	105	188	MT1
AYVNACOTD11.4	11.4	105	188	MT1
AYVNACOTD11.5	11.5	105	188	MT1
AYVNACOTD11.6	11.6	108	192	MT1
AYVNACOTD11.7	11.7	108	192	MT1
AYVNACOTD11.8	11.8	108	192	MT1
AYVNACOTD11.9	11.9	108	192	MT1

12~13.9

108~122

192~205

MT1

8.74~9.26

Expand this group (20 specs)

Part No.	Dia.	Flute length	Overall length	Shank dia.
AYVNACOTD12.0	12	108	192	MT1
AYVNACOTD12.1	12.1	112	195	MT1
AYVNACOTD12.2	12.2	112	195	MT1
AYVNACOTD12.3	12.3	112	195	MT1
AYVNACOTD12.4	12.4	112	195	MT1
AYVNACOTD12.5	12.5	112	195	MT1
AYVNACOTD12.6	12.6	115	198	MT1
AYVNACOTD12.7	12.7	115	198	MT1
AYVNACOTD12.8	12.8	115	198	MT1
AYVNACOTD12.9	12.9	115	198	MT1
AYVNACOTD13.0	13	115	198	MT1
AYVNACOTD13.1	13.1	118	202	MT1
AYVNACOTD13.2	13.2	118	202	MT1
AYVNACOTD13.3	13.3	118	202	MT1
AYVNACOTD13.4	13.4	118	202	MT1
AYVNACOTD13.5	13.5	118	202	MT1
AYVNACOTD13.6	13.6	122	205	MT1
AYVNACOTD13.7	13.7	122	205	MT1
AYVNACOTD13.8	13.8	122	205	MT1
AYVNACOTD13.9	13.9	122	205	MT1

14~15.9

122~130

205~230

1~2

8.18~8.71

Expand this group (20 specs)

Part No.	Dia.	Flute length	Overall length	Shank dia.
AYVNACOTD14.0	14	122	205	MT1
AYVNACOTD14.1	14.1	122	222	MT2
AYVNACOTD14.2	14.2	122	222	MT2
AYVNACOTD14.3	14.3	122	222	MT2
AYVNACOTD14.4	14.4	122	222	MT2
AYVNACOTD14.5	14.5	122	222	MT2
AYVNACOTD14.6	14.6	125	225	MT2
AYVNACOTD14.7	14.7	125	225	MT2
AYVNACOTD14.8	14.8	125	225	MT2
AYVNACOTD14.9	14.9	125	225	MT2
AYVNACOTD15.0	15	125	225	MT2
AYVNACOTD15.1	15.1	128	228	MT2
AYVNACOTD15.2	15.2	128	228	MT2
AYVNACOTD15.3	15.3	128	228	MT2
AYVNACOTD15.4	15.4	128	228	MT2
AYVNACOTD15.5	15.5	128	228	MT2
AYVNACOTD15.6	15.6	130	230	MT2
AYVNACOTD15.7	15.7	130	230	MT2
AYVNACOTD15.8	15.8	130	230	MT2
AYVNACOTD15.9	15.9	130	230	MT2

16~17.9

130~140

230~240

MT2

7.82~8.2

Expand this group (20 specs)

Part No.	Dia.	Flute length	Overall length	Shank dia.
AYVNACOTD16.0	16	130	230	MT2
AYVNACOTD16.1	16.1	132	232	MT2
AYVNACOTD16.2	16.2	132	232	MT2
AYVNACOTD16.3	16.3	132	232	MT2
AYVNACOTD16.4	16.4	132	232	MT2
AYVNACOTD16.5	16.5	132	232	MT2
AYVNACOTD16.6	16.6	135	235	MT2
AYVNACOTD16.7	16.7	135	235	MT2
AYVNACOTD16.8	16.8	135	235	MT2
AYVNACOTD16.9	16.9	135	235	MT2
AYVNACOTD17.0	17	135	235	MT2
AYVNACOTD17.1	17.1	140	240	MT2
AYVNACOTD17.2	17.2	140	240	MT2
AYVNACOTD17.3	17.3	140	240	MT2
AYVNACOTD17.4	17.4	140	240	MT2
AYVNACOTD17.5	17.5	140	240	MT2
AYVNACOTD17.6	17.6	140	240	MT2
AYVNACOTD17.7	17.7	140	240	MT2
AYVNACOTD17.8	17.8	140	240	MT2
AYVNACOTD17.9	17.9	140	240	MT2

18~19.9

140~150

240~250

MT2

7.54~8.01

Expand this group (20 specs)

Part No.	Dia.	Flute length	Overall length	Shank dia.
AYVNACOTD18.0	18	140	240	MT2
AYVNACOTD18.1	18.1	145	245	MT2
AYVNACOTD18.2	18.2	145	245	MT2
AYVNACOTD18.3	18.3	145	245	MT2
AYVNACOTD18.4	18.4	145	245	MT2
AYVNACOTD18.5	18.5	145	245	MT2
AYVNACOTD18.6	18.6	145	245	MT2
AYVNACOTD18.7	18.7	145	245	MT2
AYVNACOTD18.8	18.8	145	245	MT2
AYVNACOTD18.9	18.9	145	245	MT2
AYVNACOTD19.0	19	145	245	MT2
AYVNACOTD19.1	19.1	150	250	MT2
AYVNACOTD19.2	19.2	150	250	MT2
AYVNACOTD19.3	19.3	150	250	MT2
AYVNACOTD19.4	19.4	150	250	MT2
AYVNACOTD19.5	19.5	150	250	MT2
AYVNACOTD19.6	19.6	150	250	MT2
AYVNACOTD19.7	19.7	150	250	MT2
AYVNACOTD19.8	19.8	150	250	MT2
AYVNACOTD19.9	19.9	150	250	MT2

20~21.9

150~160

250~260

MT2

7.31~7.71

Expand this group (20 specs)

Part No.	Dia.	Flute length	Overall length	Shank dia.
AYVNACOTD20.0	20	150	250	MT2
AYVNACOTD20.1	20.1	155	255	MT2
AYVNACOTD20.2	20.2	155	255	MT2
AYVNACOTD20.3	20.3	155	255	MT2
AYVNACOTD20.4	20.4	155	255	MT2
AYVNACOTD20.5	20.5	155	255	MT2
AYVNACOTD20.6	20.6	155	255	MT2
AYVNACOTD20.7	20.7	155	255	MT2
AYVNACOTD20.8	20.8	155	255	MT2
AYVNACOTD20.9	20.9	155	255	MT2
AYVNACOTD21.0	21	155	255	MT2
AYVNACOTD21.1	21.1	160	260	MT2
AYVNACOTD21.2	21.2	160	260	MT2
AYVNACOTD21.3	21.3	160	260	MT2
AYVNACOTD21.4	21.4	160	260	MT2
AYVNACOTD21.5	21.5	160	260	MT2
AYVNACOTD21.6	21.6	160	260	MT2
AYVNACOTD21.7	21.7	160	260	MT2
AYVNACOTD21.8	21.8	160	260	MT2
AYVNACOTD21.9	21.9	160	260	MT2

22~23.9

160~165

260~285

2~3

6.9~7.47

Expand this group (20 specs)

Part No.	Dia.	Flute length	Overall length	Shank dia.
AYVNACOTD22.0	22	160	260	MT2
AYVNACOTD22.1	22.1	165	265	MT2
AYVNACOTD22.2	22.2	165	265	MT2
AYVNACOTD22.3	22.3	165	265	MT2
AYVNACOTD22.4	22.4	165	265	MT2
AYVNACOTD22.5	22.5	165	265	MT2
AYVNACOTD22.6	22.6	165	265	MT2
AYVNACOTD22.7	22.7	165	265	MT2
AYVNACOTD22.8	22.8	165	265	MT2
AYVNACOTD22.9	22.9	165	265	MT2
AYVNACOTD23.0	23	165	265	MT2
AYVNACOTD23.1	23.1	165	285	MT3
AYVNACOTD23.2	23.2	165	285	MT3
AYVNACOTD23.3	23.3	165	285	MT3
AYVNACOTD23.4	23.4	165	285	MT3
AYVNACOTD23.5	23.5	165	285	MT3
AYVNACOTD23.6	23.6	165	285	MT3
AYVNACOTD23.7	23.7	165	285	MT3
AYVNACOTD23.8	23.8	165	285	MT3
AYVNACOTD23.9	23.9	165	285	MT3

24~25.9

165

285

MT3

6.37~6.88

Expand this group (20 specs)

Part No.	Dia.	Flute length	Overall length	Shank dia.
AYVNACOTD24.0	24	165	285	MT3
AYVNACOTD24.1	24.1	165	285	MT3
AYVNACOTD24.2	24.2	165	285	MT3
AYVNACOTD24.3	24.3	165	285	MT3
AYVNACOTD24.4	24.4	165	285	MT3
AYVNACOTD24.5	24.5	165	285	MT3
AYVNACOTD24.6	24.6	165	285	MT3
AYVNACOTD24.7	24.7	165	285	MT3
AYVNACOTD24.8	24.8	165	285	MT3
AYVNACOTD24.9	24.9	165	285	MT3
AYVNACOTD25.0	25	165	285	MT3
AYVNACOTD25.1	25.1	165	285	MT3
AYVNACOTD25.2	25.2	165	285	MT3
AYVNACOTD25.3	25.3	165	285	MT3
AYVNACOTD25.4	25.4	165	285	MT3
AYVNACOTD25.5	25.5	165	285	MT3
AYVNACOTD25.6	25.6	165	285	MT3
AYVNACOTD25.7	25.7	165	285	MT3
AYVNACOTD25.8	25.8	165	285	MT3
AYVNACOTD25.9	25.9	165	285	MT3

26~27.9

165~175

285~295

MT3

6.27~6.51

Expand this group (20 specs)

Part No.	Dia.	Flute length	Overall length	Shank dia.
AYVNACOTD26.0	26	165	285	MT3
AYVNACOTD26.1	26.1	170	290	MT3
AYVNACOTD26.2	26.2	170	290	MT3
AYVNACOTD26.3	26.3	170	290	MT3
AYVNACOTD26.4	26.4	170	290	MT3
AYVNACOTD26.5	26.5	170	290	MT3
AYVNACOTD26.6	26.6	170	290	MT3
AYVNACOTD26.7	26.7	170	290	MT3
AYVNACOTD26.8	26.8	170	290	MT3
AYVNACOTD26.9	26.9	170	290	MT3
AYVNACOTD27.0	27	170	290	MT3
AYVNACOTD27.1	27.1	175	295	MT3
AYVNACOTD27.2	27.2	175	295	MT3
AYVNACOTD27.3	27.3	175	295	MT3
AYVNACOTD27.4	27.4	175	295	MT3
AYVNACOTD27.5	27.5	175	295	MT3
AYVNACOTD27.6	27.6	175	295	MT3
AYVNACOTD27.7	27.7	175	295	MT3
AYVNACOTD27.8	27.8	175	295	MT3
AYVNACOTD27.9	27.9	175	295	MT3

28~29.9

175~185

295~305

MT3

6.19~6.41

Expand this group (20 specs)

Part No.	Dia.	Flute length	Overall length	Shank dia.
AYVNACOTD28.0	28	175	295	MT3
AYVNACOTD28.1	28.1	180	300	MT3
AYVNACOTD28.2	28.2	180	300	MT3
AYVNACOTD28.3	28.3	180	300	MT3
AYVNACOTD28.4	28.4	180	300	MT3
AYVNACOTD28.5	28.5	180	300	MT3
AYVNACOTD28.6	28.6	180	300	MT3
AYVNACOTD28.7	28.7	180	300	MT3
AYVNACOTD28.8	28.8	180	300	MT3
AYVNACOTD28.9	28.9	180	300	MT3
AYVNACOTD29.0	29	180	300	MT3
AYVNACOTD29.1	29.1	185	305	MT3
AYVNACOTD29.2	29.2	185	305	MT3
AYVNACOTD29.3	29.3	185	305	MT3
AYVNACOTD29.4	29.4	185	305	MT3
AYVNACOTD29.5	29.5	185	305	MT3
AYVNACOTD29.6	29.6	185	305	MT3
AYVNACOTD29.7	29.7	185	305	MT3
AYVNACOTD29.8	29.8	185	305	MT3
AYVNACOTD29.9	29.9	185	305	MT3

30~31.8

185~195

305~315

MT3

6.13~6.29

Expand this group (12 specs)

Part No.	Dia.	Flute length	Overall length	Shank dia.
AYVNACOTD30.0	30	185	305	MT3
AYVNACOTD30.2	30.2	190	310	MT3
AYVNACOTD30.3	30.3	190	310	MT3
AYVNACOTD30.5	30.5	190	310	MT3
AYVNACOTD30.7	30.7	190	310	MT3
AYVNACOTD30.8	30.8	190	310	MT3
AYVNACOTD31.0	31	190	310	MT3
AYVNACOTD31.2	31.2	195	315	MT3
AYVNACOTD31.3	31.3	195	315	MT3
AYVNACOTD31.5	31.5	195	315	MT3
AYVNACOTD31.7	31.7	195	315	MT3
AYVNACOTD31.8	31.8	195	315	MT3

32~33

195~200

315~345

3~4

6.06~6.21

Expand this group (7 specs)

Part No.	Dia.	Flute length	Overall length	Shank dia.
AYVNACOTD32.0	32	195	315	MT3
AYVNACOTD32.2	32.2	200	345	MT4
AYVNACOTD32.3	32.3	200	345	MT4
AYVNACOTD32.5	32.5	200	345	MT4
AYVNACOTD32.7	32.7	200	345	MT4
AYVNACOTD32.8	32.8	200	345	MT4
AYVNACOTD33.0	33	200	345	MT4

Specification Range

Diameter	7~33mm
Flute length	75~200mm
Overall length	155~345mm
Shank diameter	MT1~MT4
Depth ratio	6.06~10.99

Product Description

NACHI 6602 COTD is the cobalt (HSS-CO) Morse taper shank drill. Cobalt raises red hardness, which is what large-diameter stainless drilling needs; for ordinary steel 602 TD is enough and costs less. It is made from cobalt high speed steel (HSS-CO), uncoated. Sizes cover diameter 7~33mm, flute length 75~200mm, overall length 155~345mm, 249 in total, made in Japan. Why is large-diameter stainless hard? The bigger the hole the higher the cutting speed, concentrating heat at the edge - cobalt is there to take it. It suits carbon and alloy steel, stainless steel, copper, aluminium and other non-ferrous metals with workpiece hardness up to HRC40. Typical uses: large-hole drilling in stainless, thick SUS plate, and roughing in heat-resistant alloys. The family also includes the uncoated 602 TD (diameter 7~100mm, rated to HRC30), the TiN coated 620P GTD (diameter 7~32mm) and the long-series 650 LTD (flute length 150~450mm).

Workpiece Materials & Hardness

Steel (P)
Stainless steel (M)
Non-ferrous metals (N)

Max. workpiece hardness HRC40

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