Prod. No.  248

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CODE FOR

DIAMETER

STRAIGHT 
FLUTE 

SPIRAL 
FLUTE

HELICAL 
FLUTE

SIZE 

SHANK 
LENGTH 

SMALL 
END

LARGE
 END

FLUTE 
LENGTH 

OVERALL 
LENGTH 

RTR/ST/1

RTR/SP/1

RTR/H/1

7/0

5/64"

.0497"

.0666"

13/16"

1-13/16"

RTR/ST/2

RTR/SP/2

RTR/H/2

6/0

3/32"

.0611"

.0806"

15/16"

1-15/16"

RTR/ST/3

RTR/SP/3

RTR/H/3

5/0

7/64"

.0719"

.0966"

1-3/16"

2-3/16

RTR/ST/4

RTR/SP/4

RTR/H/4

4/0

1/8"

.0869"

.1142"

1-5/16"

2-5/16"

RTR/ST/5

RTR/SP/5

RTR/H/5

3/0

9/64"

.1029"

.1302"

1-5/16"

2-5/16"

RTR/ST/6

RTR/SP/6

RTR/H/6

2/0

5/32"

.1137"

.1462"

1-9/16"

2-9/16"

RTR/ST/7

RTR/SP/7

RTR/H/7

0

11/64"

,1287"

.1638"

1-11/16"

2-15/16"

RTR/ST/8

RTR/SP/8

RTR/H/8

1

3/16"

.1447"

.1798"

1-11/16"

2-15/16"

RTR/ST/9

RTR/SP/9

RTR/H/9

2

13/64"

.1605"

.2008"

1-15/16"

3-3/16"

RTR/ST/10

RTR/SP/10

RTR/H/10

3

15/64"

.1813"

.2294"

2-5-16"

3-11/16"

RTR/ST/11

RTR/SP/11

RTR/H/11

4

17/64"

.2071"

.2604"

2-9/16"

4-1/16"

RTR/ST/12

RTR/SP/12

RTR/H/12

5

5/16"

.2409"

.2994"

2-13/16"

4-5/16"

RTR/ST/13

RTR/SP/13

RTR/H/13

6

23/64"

.2773"

.3540"

3-11/16"

5-7/16"

RTR/ST/14

RTR/SP/14

RTR/H/14

7

13/32"

.3297"

.4220"

4-7/16"

6-5/16"

RTR/ST/15

RTR/SP/15

RTR/H/15

8

7/16"

.3971"

.5050"

5-3/16"

7-3/16"

RTR/ST/16

RTR/SP/16

RTR/H/16

9

9/16"

.4805"

.6066"

6-1/16"

8-5/16"

RTR/ST/17

RTR/SP/17

RTR/H/17

10

5/8"

.5799"

.7216"

6/-13/16"

9-5/16'

RTR/ST/18

RTR/SP/18

RTR/H/18

11

3/4"

.7060"

.8780"

8-1/4"

11-1/14"

RTR/ST/19

RTR/SP/19

RTR/H/19

12

7/8"

.8420"

1.0500"

10"

13-5/8"

RTR/ST/20

RTR/SP/20

RTR/H/20

13

1-1/4"

1.0090"

1.2590"

12"

16"

RTR/ST/21

RTR/SP/21

RTR/H/21

14

1-1/2"

1.25.00

1.5420"

14"

18-1/4"