NAVAIR 01-1A-505-2
007 02
TO 00-25-255-1
Page 4
TM 1-1500-323-24-2
21. Alternate Position. The alternate position indicates
8. MATING SEAL. Plugs and receptacles with pin
insert polarization (Figure 3).
inserts have a resilient face with individual pin barriers
to seal against the hard face socket insert. The resilient
22. DESIGN AND CONSTRUCTION. Connectors and
interface seal provides individual contact seals in mated
accessories are designed and constructed to withstand
condition between each contact and shell.
normal handling incidental to installation and
maintenance for crimp front and rear release contacts
9. SHELL. Shells including mounting flanges are of
(Figures 4 and 5).
one-piece construction and designed to retain their
inserts in one position by mechanical means. Each plug
23. I N S E R T S . A l l r e s i l i e n t i n s e r t s s h a l l b e
and receptacle has at least one blue color band, which
non-removable from the shell. Hard material inserts
indicates rear release retention system, and is located
for connectors having more than one alternate position
to be readily visible.
shall be removable from the shell. However, these
inserts shall be retained within the shell when the
10. COUPLING. Connectors shall be capable of being
conduit nut or adapter is removed. All inserts are of a
fully coupled and uncoupled without use of tools.
voidless construction and are secured to prevent
rotation within shell.
11. POLARIZATION. Connectors are polarized as
denoted by their part numbers. This means that the
24. Crimp Snap-In Contacts. Snap-in contacts designed
master keyway is rotated to prevent mis-mating of
to AS39029 can be crimped with standard M22520/1
similar connectors in a close proximity location. A plug
crimp tool.
with a given polarization letter will mate with a
receptacle with same letter. The inserts do not rotate,
25. Closed-Entry Socket Contacts. These contacts
only the keyway is rotated.
eliminate damage from abuse by test probes and help
to correct any misaligned pins during engagement.
12. PART NUMBER. The following paragraphs contain
information necessary for proper selection and
26. Contact Insertion. Insertion is accomplished from
procurement of connector (Figure 2).
rear of connector. When contact is fully inserted, the
13. MILITARY PREFIX. The military prefix denotes
clip tines snap securely behind contact shoulders.
military standard.
27. Contact Extraction. Extraction is accomplished with
14. SHELL STYLE. The shell style denotes type of
use of a removal tool.
connector and mounting to structure.
28. Contact Retaining Clip. The contact retaining clip
15. CLASS. The class is a letter code denoting
is completely encased in a tough plastic wafer to protect
environment resisting ability.
clip from damage.
16. SHELL MATERIAL. The shell material is a letter
29. Moisture Sealing. Complete sealing is achieved by
code denoting the material of the shell (where
combining four seals, shell, peripheral, interfacial, and
applicable).
wire seal.
17. Shell Size. The shell size is indicated by a progressive
30. Shell Seal. This seal is effected when plug shell
numbering system.
pushes against sealing ring in receptacle when
connectors are mated.
18. Backshell Sealing Range. This portion of the part
number pertains to Class DJ only (where applicable).
31. Peripheral Seal. This seal is around the edge of pin
insulator and designed so that when mating the
19. Insert Configuration. The insert configuration is
connector, tension is put on seal and greatly reduces
the insert arrangement by number and size of contacts.
compression set.
20. Contact Style. The contact style denotes the type of
32. Interfacial Seal. This seal is achieved by insulator
contact (pin or socket).
faces meeting when plug and receptacle are mated.
