NAVAIR 01-1A-505-3
TO 1-1A-14-3
TM 1-1500-323-24-3
004 02
Page 11
Table 1. MIL-DTL-28731 Insert Arrangements (Sheet 6)
Contact Part
No. of
Mounting Type
Military Part No.
Contact Type
No.
Contacts
M28731/34-0006
Wrappost
M28731/36
165
Type E Fixed Screw
M28731/34-0007
Crimp
M28731/35
165
Type H Jacksocket
M28731/4-F
Less Contacts
---
100
Type F Fixed Socket
M28731/4-0073
Crimp
M28731/20
100
Type F Fixed Socket
M28731/4-0074
Crimp
M28731/20
100
Type D Jacksocket
M28731/4-0075
Solder
---
100
Type F Fixed Socket
M28731/4-0076
Solder
---
100
Type D Jacksocket
M28731/40077
Wrappost
M28731/26
100
Type F Fixed Socket
M28731/9-C
Less Contacts
---
20
Type C Jackscrew
M28731/9-E
Less Contacts
---
20
Type E Fixed Screw
M28731/9-F
Less Contacts
---
20
Type F Fixed Socket
M28731/9-0109
Crimp
M28731/20
20
Type C Jackscrew
M28731/9-0110
Crimp
M28731/20
20
Type F Fixed Socket
M28731/9-0111
Crimp
M28731/20
20
Type E Fixed Screw
M28731/9-0112
Solder
---
20
Type C Jackscrew
M28731/9-0113
Solder
---
20
Type F Fixed Socket
M28731/9-0114
Solder
---
20
Type E Fixed Screw
M28731/9-0115
Wrappost
M28731/26
20
Type F Fixed Socket
M28731/9-0116
Wrappost
M28731/26
20
Type E Fixed Screw
16. INSERT ARRANGEMENT. The insert
has current rating of 8.5 amps and M2873U35 has
arrangement (Table 1) contains connector military
current rating of 5.0 amps. Refer to Figures 6 thru 10.
part number, type of contact, contact part number,
20. Wrappost Contacts. Wrappost, or wire wrapped
number of contacts, and type of mounting hardware.
contacts, are used for solderless wire wrapping which
Refer to Figures 3 thru 5.
is a highly reliable method for making point-to-point
mechanical and electrical connections between wires
17. Contacts are designed to prevent damage to
and terminals. Wire wrapping may be used in any
contact retention device or sealing member during
application where low-cost, high density wiring is
insertion or removal of contacts.
used. There are two wrappost contacts and the only
18. Fixed Contacts. Fixed contacts are solderable
difference between them is the tail length. M2873U26
and non-removable from the insert and have either
has 0.170 in. tail length and M2873U36 has 0.580 in.
eyelet or solder cup terminals. The solder cups are so
tail length. Refer to Figures 11 thru 15. Refer to 01-
designed that during soldering, no components will be
1A-505-1, WP 003 00 Table 2 for more information
damaged and no liquid solder shall escape.
on wire wrapping.
19. Crimp Removable Contacts. There are two crimp
21. Contact Availability. Crimp contacts may be
removable contacts and the only difference between
supplied with each connector unit package and
them is current rating for each contact. M2873U20
consist of a full complement plus one spare per size
