MIL-DTL-641/1E
TABLE I. Dimensions.
Center to center dimensions for multiple
mounting panel
Type
A
B
In direction of
At right angle to
max
max
pileup (min)
pileup (min)
JJ-015
.750
.062
.922
.625
JJ-019
.688
.040
.969
REQUIREMENTS:
Dimensions and configuration: See figure 1.
Insertion and withdraw forces shall be as follows.
Insertion force -
7 pounds (maximum).
Withdraw force -
1.5 pounds (minimum).
-
7 pounds (maximum).
Spring life test is applicable. Test plug TP55, in accordance with MIL-DTL-641, shall be used.
Frame strength test is applicable.
Terminal of tip contact spring shall be on left side when terminals are viewed from the rear, with the jack
in a position such that the contact spring pileup is on top of the jack frame.
Cutout in jack frame shall be positioned so that a minimum of .016 inch (.4mm) clearance exists between
the tip of the TP55 plug and the edge of the frame cutout at all times during insertion of the plug.
Ground terminal shall be placed on top of pileup, as shown in schematic.
The Part or Identifying Number (PIN) consists of the letter M, the basic specification number, the
specification sheet number, and a number for jack type. (see table II)
M
641
/1
-1
Type designation
Specification sheet number
Specification number
M prefix
PIN example: M641/1-1 indicates type JJ-015 telephone jack.
TABLE II. PIN.
Dash number
Type
Connection
Switching action upon insertion
Mounting
designation
of plug 1/
1
JJ-015
One break - make, one make
Tip and sleeve
Single lug
2
JJ-019
Two make - break
1/ The hyphen indicates sequence.
2