ABMA NUMBER

MILITARY 

STANDARD 

REFERENCE 

NUMBER MS-

A

B

W

C

D

E

H

P

BORE

O.D.

OVERALL

WIDTH

O.R.

WIDTH

RADIUS 

OR 45° 

BEVEL

END 

RING DIA.

O.R.

GROOVE

 WIDTH

I.R.

GROOVE

 WIDTH

IN.

TOL.

IN.

TOL.

+.000

-.005

+.000

-.005

3NBE514ZP

24463-3

.1900

+.0000

-.0007

.8750

+.0000

-.0005

.312

.218

.022

5/8

1/16

-

4NBE615ZP

24463-4

.2500

.9375

.375

.281

.022

11/16

3/32

-

5NBE717ZP

24463-5

.3125

1.0625

.437

.344

.022

3/4

3/32

-

6NBK919YZP

24464-6

.3750

1.1875

.562

.469

.022

13/16

1/8

3/16

7NBK1021YZP

24464-7

.4375

1.3125

.625

.531

.032

7/8

1/8

3/16

8NBK1224YZP

24464-8

.5000

1.5000

.750

.656

.032

1 1/32

1/8

3/16

9NBK1427YZP

24464-9

.5625

1.6875

.875

.781

.032

1 3/32

5/32

3/16

10NBK1628YZP

24464-10

.6250

1.7500

1.000

.906

.032

1 5/32

5/32

1/4

12NBK1830YZP

24464-12

.7500

1.8750

1.125

1.000

.032

1 9/32

5/32

1/4

14NBK2034YZP

24464-14

.8750

2.1250

+.0000

-.0006

1.250

1.125

.032

1 1/2

5/32

3/8

16NBK2036YZP

24464-16

1.0000

2.2500

1.250

1.125

.032

1 5/8

5/32

3/8

20NBK2040YZP

24464-20

1.2500

2.5000

1.250

1.049

.032

1 29/32

5/32

3/8

24NBK2044YZP

24464-24

1.5000

2.7500

1.250

1.049

.032

2 5/32

5/32

3/8

32NBK2052YZP

24464-32

2.0000

3.2500

+.0000

-.0008

1.250

1.049

.032

2 21/32

5/32

3/8

40NBK2060YZP

24464-40

2.5000

3.7500

1.250

1.049

.032

3 5/32

5/32

3/8

48NBK2068YZP

24464-48

3.0000

4.2500

1.250

1.049

.032

3 21/32

5/32

3/8

56NBK2078YZP

24464-56

3.5000

+.0000

-.0008

4.8750

+.0000

-.0010

1.250

1.049

.044

4 7/32

5/32

3/8