Part
Number

OD
(inch)

3L
Pitch

4L+A
Pitch

Type

O.L.
(inch)

P
(inch)

X
(inch)

3.05

2.46

2.80

1

1-13/16

7/8

1-13/16

· AK32H - inch
· AK32H - metric

3.25

2.66

3.00

1

1-13/16

7/8

1-13/16

· AK34H - inch
· AK34H - metric

3.45

2.86

3.20

2

1-1/2

9/16

7/8

· AK39H - inch
· AK39H - metric

3.75

3.16

3.50

2

1-1/2

9/16

7/8

· AK41H - inch
· AK41H - metric

3.95

3.36

3.70

2

1-1/2

9/16

7/8

· AK44H - inch
· AK44H - metric

4.25

3.66

4.00

2

1-1/2

9/16

7/8

· AK46H - inch
· AK46H - metric

4.45

3.86

4.20

2

1-1/2

9/16

7/8

· AK49H - inch
· AK49H - metric

4.75

4.16

4.50

2

1-1/2

9/16

7/8

· AK51H - inch
· AK51H - metric

4.95

4.36

4.70

2

1-1/2

9/16

7/8

· AK54H - inch
· AK54H - metric

5.25

4.66

5.00

2

1-1/2

9/16

7/8

· AK56H - inch
· AK56H - metric

5.45

4.86

5.20

2

1-1/2

9/16

7/8

· AK59H - inch
· AK59H - metric

5.75

5.16

5.50

2

1-1/2

9/16

7/8

· AK61H - inch
· AK61H - metric

5.95

5.36

5.70

3

1-1/2

9/16

7/8

· AK64H - inch
· AK64H - metric

6.25

5.66

6.00

3

1-1/2

9/16

7/8

· AK66H - inch
· AK66H - metric

6.45

5.86

6.20

3

1-1/2

9/16

7/8

· AK69H - inch
· AK69H - metric

6.75

6.16

6.50

3

1-1/2

9/16

7/8

· AK71H - inch
· AK71H - metric

6.95

6.36

6.70

3

1-1/2

9/16

7/8

· AK74H - inch
· AK74H - metric

7.25

6.66

7.00

3

1-1/2

9/16

7/8

· AK79H - inch
· AK79H - metric

7.75

7.16

7.50

3

1-1/2

9/16

7/8

· AK84H - inch
· AK84H - metric

8.25

7.66

8.00

3

1-1/2

9/16

7/8

· AK89H - inch
· AK89H - metric

8.75

8.16

8.50

3

1-1/2

9/16

7/8

· AK94H - inch
· AK94H - metric

9.25

8.66

9.00

3

1-1/2

9/16

7/8

· AK99H - inch
· AK99H - metric

9.75

9.16

9.50

3

1-1/2

9/16

7/8

· AK104H - inch
· AK104H - metric

10.25

9.66

10.00

3

1-1/2

9/16

7/8

· AK109H - inch
· AK109H - metric

10.75

10.16

10.50

3

1-1/2

9/16

7/8

· AK104H - inch
· AK104H - metric

11.25

10.66

11.00

3

1-1/2

9/16

7/8

· AK124H - inch
· AK124H - metric

12.25

11.66

12.00

3

1-1/2

9/16

7/8

· AK134H - inch
· AK134H - metric

13.25

12.66

13.00

3

1-1/2

9/16

7/8

· AK144H - inch
· AK144H - metric

14.25

13.66

14.00

3

1-1/2

9/16

7/8

· AK154H - inch
· AK154H - metric

15.25

14.66

15.00

3

1-1/2

9/16

7/8

· AK184H - inch
· AK184H - metric

18.25

17.66

18.00

3

1-1/2

9/16

7/8

Stock Bores
(inch)

Keyseat
(inch)

3/8

None

7/16

None

1/2

1/8 x 1/16

9/16

1/8 x 1/16

5/8

3/16 x 3/32

11/16

3/16 x 3/32

3/4

3/16 x 3/32

13/16

3/16 x 3/32

7/8

3/16 x 3/32

15/16

1/4 x 1/8

1

1/4 x 1/8

1-1/16

1/4 x 1/8

1-1/8

1/4 x 1/8

1-3/16

1/4 x 1/8

1-1/4

1/4 x 1/8

1-5/16

5/16 x 1/16*

1-3/8

5/16 x 1/16*

1-7/16

3/8 x 1/16*

1-1/2

3/8 x 1/16*