11
"AT"
"CB"
"CT"
"TW"
"B"
Tool Steel
Carbide
Carbide
Tool Steel
Steel
STUD
Straight
Straight
Twist
Twist
Wire
inch
mm
inch
mm
THREAD
DRILL #
DRILL #
DRILL #
DRILL #
BRUSH #
.291-.306
7.39-7.77
.281 "
7.14
10-32
AT-199
CB-199
199-B
.307-.321
7.77-8.15
.296 "
7.52
10-32
AT-199-5
CB-199-5
199-5-B
.322-.337
8.18-8.56
.312 "
7.92
10-32
AT-200
CB-200
200-B
.338-.353
8.59-8.97
.328 "
8.33
10-32
AT-200-5
CB-200-5
200-5-B
.359-.389
9.12-9.88
.343 "
8.71
1/4" NF
AT-201
CB-201
TW-201
201-B
.390-.420
9.91-10.67
.375 "
9.52
1/4" NF
AT-202
CB-202
TW-202
202-B
.421-.452
10.69-11.48
.406 "
10.31
1/4" NF
AT-203
CB-203
TW-203
203-B
.453-.483
11.48-12.27
.437 "
11.10
1/4" NF
AT-204
CB-204
TW-204
204-B
.484-.514
12.29-13.06
.468 "
11.89
5/16" NF
AT-205
CB-205
CT-205
TW-205
205-B
.515-.545
13.08-13.84
.500 "
12.70
5/16" NF
AT-206
CB-206
CT-206
TW-206
206-B
.546-.577
13.87-14.66
.531 "
13.49
5/16" NF
AT-207
CB-207
CT-207
TW-207
207-B
.578-.608
14.68-15.44
.562 "
14.27
5/16" NF
AT-208
CB-208
CT-208
TW-208
208-B
.578-.608
14.68-15.44
.562 "
14.27
3/8' NF
AT-108
CB-108
CT-108
TW-108
108-B
.609-.639
15.47-16.23
.593 "
15.06
3/8' NF
AT209
CB-209
CT-209
TW-209
209-B
.640-.675
16.26-17.15
.625 "
15.88
3/8' NF
AT-210
CB-210
CT-210
TW-210
210-B
.676-.706
17.17-17.93
.656 "
16.66
3/8' NF
AT-211
CB-211
CT-211
TW-211
211-B
.707-.737
17.96-18.72
.687 "
17.45
3/8' NF
AT-212
CB-212
CT-212
TW-212
212-B
.738-.769
18.75-19.53
.718 "
18.24
3/8' NF
AT-213
CB-213
CT-213
TW-213
213-B
.770-.800
19.56-20.32
.750 "
19.05
3/8' NF
AT214
CB-214
CT-214
TW-214
214-B
.801-.831
20.35-21.11
.781 "
19.84
3/8' NF
AT-215
CB-215
CT-215
TW-215
215-B
.832-.862
21.13-21.89
.812 "
20.62
3/8' NF
AT-216
CB-216
CT-216
TW-216
216-B
.863-.894
21.92-22.71
.843 "
21.41
3/8' NF
AT-217
CB-217
CT-217
TW-217
217-B
.895-.925
22.73-23.50
.875 "
22.23
3/8' NF
AT-218
CB-218
CT-218
TW-218
218-B
.926-.956
23.52-24.28
.906 "
23.01
3/8' NF
AT-219
CB-219
CT-219
TW-219
219-B
.957-.987
24.31-25.07
.937 "
23.80
3/8' NF
AT-220
CB-220
CT-220
TW-220
220-B
.988-1.024
25.35-26.01
.968 "
24.59
3/8' NF
AT-221
CB-221
CT-221
TW-221
221-B
1.025-1.055
26.04-26.80
1.000 "
25.40
3/8' NF
AT-222
CB-222
CT-222
TW-222
222-B
1.056-1.086
26.82-27.58
1.031 "
26.19
7/16" NF
AT-223
CB-223
CT-223
TW-223
223-B
1.087-1.117
27.61-28.37
1.062 "
26.97
7/16" NF
AT-224
CB-224
CT-224
TW-224
224-B
1.118-1.149
28.40-29.18
1.093 "
27.76
7/16" NF
AT-225
CB-225
CT-225
TW-225
225-B
1.150-1.180
29.21-29.97
1.125 "
28.58
7/16" NF
AT-226
CB-226
CT-226
TW-226
226-B
1.181-1.211
30.0-30.76
1.156 "
29.36
7/16" NF
AT-227
CB-227
CT-227
TW-227
227-B
1.212-1.242
30.78-31.55
1.187 "
30.15
7/16" NF
AT-228
CB-228
CT-228
TW-228
228-B
1.243-1.280
31.57-32.51
1.218 "
30.94
7/16" NF
AT-229
CB-229
CT-229
TW-229
229-B
1.281-1.311
32.54-33.30
1.250 "
31.75
7/16" NF
AT-230
CB-230
CT-230
TW-230
230-B
TUBE
I. .D
DIAMETER of
DRILL or BRUSH
