Contacts
(Insert arrangement 21-25)

Contact
position
ID

Contact location

Contact
position ID

Contact location

X-axis (mm)

Y-axis (mm)

X-axis (mm)

Y-axis (mm)

A

~.000 (0.00)

~.400 (10.16)

P

-.225 (5.72)

~.225 (5.72)

B

~.150 (3.81)

~.375 (9.53)

R

-.150 (3.81)

~.375 (9.53)

C

~.225 (5.72)

~.225 (5.72)

S

~.075 (1.91)

~.225 (5.72)

D

~.375 (9.53)

~.175 (4.45)

T

~.250 (6.35)

~.075 (1.91)

E

~.400 (10.16)

~.025 (0.64)

U

~.150 (3.81)

-.200 (5.08)

F

~.375 (9.53)

-.125 (3.18)

V

-.150 (3.81)

-.200 (5.08)

G

~.275 (6.99)

-.300 (7.62)

W

-.250 (6.35)

~.075 (1.91)

H

~.100 (2.54)

-.400 (10.16)

X

-.075 (1.91)

~.225 (5.72)

J

-.100 (2.54)

-.400 (10.16)

Y

~.000 (0.00)

~.075 (1.91)

K

-.275 (6.99)

-.300 (7.62)

Z

~.125 (3.18)

-.025 (0.64)

L

-.375 (9.53)

-.125 (3.18)

a

~.000 (0.00)

-.125 (3.18)

M

-.400 (10.16)

~.025 (0.64)

b

-.125 (3.18)

-.025 (0.64)

N

-.375 (9.53)

~.1 75 (4.45)

 

 

 

 

Shell size

Arrangement
No.

Number of contacts

Size
contacts

Service rating

Contact location

Supersedes

21

-25

25

20

I

All

MS20055-25

 

FIGURE 7. Insert arrangement, electrical connector, shell size 21 (Series I, III, IV of MIL-DTL­38999, Series I of MIL-DTL-27599, and Series A of MIL-C-29600)