Contacts
(Insert arrangement 21-27)

Contact
position
ID

Contact location

Contact
position
ID

Contact location

X-axis

Y-axis

X-axis

Y-axis

A

~.000 (0.00)

~.400 (10.16)

R

-.150 (3.81)

~.375 (9.53)

B

~.150 (3.81)

~.375 (9.53)

S

~.125 (3.18)

~.225 (5.72)

C

~.275 (6.99)

~.275 (6.99)

T

~.225 (5.72)

~.100 (2.54)

D

~.375 (9.53)

~.150 (3.81)

U

~.250 (6.35)

-.050 (1.27)

E

~.400 (10.16)

~.000 (0.00)

V

~.150 (3.81)

-.200 (5.08)

F

~.375 (9.53)

-.150 (3.81)

W

~.000 (0.00)

-.250 (6.35)

G

~.275 (6.99)

-.300 (7.62)

X

-.150 (3.81)

-.200 (5.08)

H

~.100 (2.54)

-.400 (10.16)

Y

-.250 (6.35)

-.050 (1.27)

J

-.100 (2.54)

-.400 (10.16)

Z

-.225 (5.72)

~.100 (2.54)

K

-.275 (6.99)

-.300 (7.62)

a

-.125 (3.18)

~.225 (5.72)

L

-.375 (9.53)

-.150 (3.81)

b

~.000 (0.00)

~.100 (2.54)

M

-.400 (10.16)

~.000 (0.00)

c

~.100 (2.54)

-.025 (0.64)

N

-.375 (9.53)

~.150 (3.81)

d

-.100 (2.54)

-.025 (0.64)

P

-.275 (6.99)

~.275 (6.99)

 

 

 

 

Shell size

Arrangement
no.

Number of contacts

Size
contacts

Service
rating

Contact location

Supersedes

21

-27

27

20

I

All

MS20055-27

 

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)