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| >> Products |
Morse taper shank twist
drills |

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GB/T 1438.1-1996 |
|
Diameter
|
Flute length
|
Total length
|
Shank No.
|
Diameter
|
Flute length
|
Total length
|
Shank No.
|
|
7.00
|
93
|
174
|
1
|
17.75
|
165
|
263
|
2
|
|
7.20
|
93
|
174
|
18.00
|
165
|
263
|
|
7.50
|
93
|
174
|
18.25
|
171
|
269
|
|
7.80
|
100
|
181
|
18.50
|
171
|
269
|
|
8.00
|
100
|
181
|
18.75
|
171
|
269
|
|
8.20
|
100
|
181
|
19.00
|
171
|
269
|
|
8.50
|
100
|
181
|
19.25
|
177
|
275
|
|
8.80
|
107
|
188
|
19.50
|
177
|
275
|
|
9.00
|
107
|
188
|
19.75
|
177
|
275
|
|
9.20
|
107
|
188
|
20.00
|
177
|
275
|
|
9.50
|
107
|
188
|
20.25
|
184
|
282
|
|
9.80
|
116
|
197
|
20.50
|
184
|
282
|
|
10.00
|
116
|
197
|
20.75
|
184
|
282
|
|
10.20
|
116
|
197
|
21.00
|
184
|
282
|
|
10.50
|
116
|
197
|
21.25
|
191
|
289
|
|
10.80
|
125
|
206
|
21.50
|
191
|
289
|
|
11.00
|
125
|
206
|
21.75
|
191
|
289
|
|
11.20
|
125
|
206
|
22.00
|
191
|
289
|
|
11.50
|
125
|
206
|
22.25
|
191
|
289
|
|
11.80
|
125
|
206
|
22.50
|
198
|
296
|
|
12.00
|
134
|
215
|
22.75
|
198
|
296
|
|
12.20
|
134
|
215
|
23.00
|
198
|
296
|
|
12.50
|
134
|
215
|
23.25
|
198
|
319
|
3
|
|
12.80
|
134
|
215
|
23.50
|
198
|
319
|
|
13.00
|
134
|
215
|
23.75
|
206
|
327
|
|
13.20
|
134
|
215
|
24.00
|
206
|
327
|
|
13.50
|
142
|
223
|
24.25
|
206
|
327
|
|
13.80
|
142
|
223
|
24.50
|
206
|
327
|
|
14.00
|
142
|
223
|
24.75
|
206
|
327
|
|
14.25
|
147
|
245
|
2
|
25.00
|
206
|
327
|
|
14.50
|
147
|
245
|
25.25
|
214
|
335
|
|
14.75
|
147
|
245
|
25.50
|
214
|
335
|
|
15.00
|
147
|
245
|
25.75
|
214
|
335
|
|
15.25
|
153
|
251
|
26.00
|
214
|
335
|
|
15.50
|
153
|
251
|
26.25
|
214
|
335
|
|
15.75
|
153
|
251
|
26.50
|
214
|
335
|
|
16.00
|
153
|
251
|
26.75
|
222
|
343
|
|
16.25
|
159
|
257
|
27.00
|
222
|
343
|
|
16.50
|
159
|
257
|
27.25
|
222
|
343
|
|
16.75
|
159
|
257
|
27.50
|
222
|
343
|
|
17.00
|
159
|
257
|
27.75
|
222
|
343
|
|
17.25
|
165
|
263
|
28.00
|
222
|
343
|
|
17.50
|
165
|
263
|
28.25
|
230
|
351
|
|
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