Cannon KJA/KJB
MIL-DTL-38999 Series III Connectors
How To Order
Military Nomenclature
D38999
CONNECTOR TYPE
SHELL STYLE
20
F
C
35
A
N
A
Circular
SERVICE CLASS
(HARDWARE FINISH)
SHELL SIZE
CONTACT ARRANGEMENT
CONTACT STYLE
POLARIZING POSITION
CONNECTOR TYPE
D38999/ - MIL-DTL-38999 Series III
SHELL STYLE
D38999/20 - Wall mount receptacle
D38999/24 - Jam nut receptacle
D38999/26 - Straight Plug, Grounded
SERVICE CLASS
(Hardware Finish)
F - Electroless nickel - 85ºF to +392ºF
(-65ºC to +200ºC)
G - Electroless nickel plated. Space Grade.
W - Olive drab cadmium over electroless nickel
plate, -85ºF to +347ºF (-65ºC to +175ºC)
SHELL SIZE
A
9
B
C
D
E
F
G
H
J
Military
Designation
Cannon
Designation
CONTACT ARRANGEMENT
See pages A-24, A-25.
CONTACT STYLE
P - Pin conatcts
S - Socket contact
A - Less Pin contacts*
B - Less Socket contact*
* Used only when other than power contacts are to
be installed (i,e., shielded, thermocouple, etc.)
POLARIZING POSITION
N (normal), A, B, C, D, E. See page A-23.
Note: To order MS connectors less standard power
contacts, purchase order must state "Less Contacts”.
11 13 15 17 19 21 23 25
Cannon Nomenclature
SERIES PREFIX
SHELL STYLE
CLASS
SHELL SIZE
HARDWARE FINISH
CONTACT ARRANGEMENT
CONTACT STYLE
POLARIZING POSITION
MODIFICATION CODE
SERIES PREFIX
KJA - Series III - Scoop proof, threaded
coupling
*KJB - Series III - Scoop proof, threaded
coupling, and with plastic contact
retention
SHELL STYLE
0 - Wall mount receptacle
6 - Straight plug
7 - Jam nut receptacle
CLASS
T - Environment-resistant (without
rear accessory)
* Consult factory for applicable layouts
SHELL SIZE
9
A
Cannon
11 13 15 17 19 21 23 25 Designation
B
C
D
E
F
G
H
J
Military
Designation
KJB
0
T
13
F
35
P
N
L
CONTACT STYLE
P -Pin contacts
S -Socket contacts
HARDWARE FINISH
F - Electroless nickel, - 85ºF to +392ºF
(-65ºC to +200ºC)
G - Electroless nickel plated. Space Grade.
W - Olive drab cadmium over electroless nickel
plate, -85ºF to +347ºF (-65ºC to +175ºC)
Z - Zinc Nickel, Black
- - (Dash) When using a finish modification code
CONTACT ARRANGEMENTS
See pages A-24 and A-25.
POLARIZING POSITION
N (normal) A, B, C, D, E. See page A-23.
MODIFICATION CODE
L - Less contacts, not stamped on connector
16 - Outgassed
NASA space graded connector
27- Outgassed, standard connector
T-69 Olive Drab (Green) Zinc Cobalt
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
A-20
www.ittcannon.com
Cannon KJA/KJB
MIL-DTL-38999 Series III Connectors
Wall Mount Receptacle
D38999/20
KJA0T
S
R
1
R
2
B
THREAD
W
MAX.
M
V THREAD
Z
A
Circular
BLUE BAND
(INDICATES REAR
RELEASE CONTACT
RETENTION SYSTEM)
T
4 PLACES
RED BAND
(FULLY MATED
INDICTAOR BAND)
.230 MAX PANEL
THICKNESS (including mounting hardware)
.520 (13.20) MAX
TT 4 PLACES
Shell
Size
9
11
13
15
17
19
21
23
25
MS
Shell size
Code
A
B
C
D
E
F
G
H
J
B Thread
Class 2A
(Plated)
.6250-0.1P-0.3L-TS
.7500-0.1P-0.3L-TS
.8750-0.1P-0.3L-TS
1.0000-0.1P-0.3L-TS
1.1875-0.1P-0.3L-TS
1.2500-0.1P-0.3L-TS
1.3750-0.1P-0.3L-TS
1.5000-0.1P-0.3L-TS
1.6250-0.1P-0.3L-TS
M
+.000 (.000)
-.005 (.130)
.820 (20.83)
.820 (20.83)
.820 (20.83)
.820 (20.83)
.820 (20.83)
.820 (20.83)
.790 (20.07)
.790 (20.07)
.790 (20.07)
R 1
.719 (18.26)
.812 (20.62)
.906 (23.01)
.969 (24.61)
1.062 (26.97)
1.156 (29.36)
1.250 (31.75)
1.375 (34.92)
1.500 (38.10)
R 2
.594 (15.09)
.719 (18.26)
.812 (20.62)
.906 (23.01)
.969 (24.61)
1.062 (26.97)
1.156 (29.36)
1.250 (31.75)
1.375 (34.92)
T
TT
S
+.004 (.100) +.004 (.100)
+_.012 (.300) -.002 (.050) -.002 (.050)
.938 (23.83)
1.031 (26.19)
1.125 (28.58)
1.219 (30.96)
1.312 (33.32)
1.438 (36.53)
1.562 (39.67)
1.688 (42.88)
1.812 (46.02)
.128 (3.25)
.128 (3.25)
.128 (3.25)
.128 (3.25)
.128 (3.25)
.128 (3.25)
.128 (3.25)
.154 (3.91)
.154 (3.91)
.216 (5.49)
.194 (4.93)
.194 (4.93)
.173 (4.39)
.194 (4.93)
.194 (4.93)
.194 (4.93)
.242 (6.15)
.242 (6.15)
Metric V
Thread
(Plated)
M12X1-6g0.100R
M15X1-6g0.100R
M18X1-6g0.100R
M22X1-6g0.100R
M25X1-6g0.100R
M28X1-6g0.100R
M31X1-6g0.100R
M34X1-6g0.100R
M37X1-6g0.100R
W
Max.
.098 (2.50)
.098 (2.50)
.098 (2.50)
.098 (2.50)
.098 (2.50)
.098 (2.50)
.126 (3.20)
.126 (3.20)
.126 (3.20)
Z
+.005 (.130)
-.010 (.250)
1.235 (31.36)
1.235 (31.36)
1.235 (31.36)
1.235 (31.36)
1.235 (31.36)
1.235 (31.36)
1.235 (31.36)
1.235 (31.36)
1.235 (31.36)
Straight Plug Grounded
D38999/26
KJA6T
L
Q
D THREAD
W
K
B
.244 (6.20)+.012 (0.30)
-.000 (0.00)
BLUE BAND
(INDICATES REAR
RELEASE CONTACT
RETENTION SYSTEMS
V THREAD
.185 (4.70) +_ .016 (0.40)
Shell
Size
9
11
13
15
17
19
21
23
25
MS
Shell size
Code
A
B
C
D
E
F
G
H
J
B
+.008 (.200)
-.000 (.000)
.724 (18.40)
.831 (21.10)
1.000 (25.40)
1.130 (28.70)
1.268 (32.20)
1.374 (34.90)
1.500 (38.10)
1.618 (41.40)
1.744 (44.30)
D Thread
Class 2B
(Plated)
.6250-0.1P-0.3L-TS
.7500-0.1P-0.3L-TS
.8750-0.1P-0.3L-TS
1.0000-0.1P-0.3L-TS
1.1875-0.1P-0.3L-TS
1.2500-0.1P-0.3L-TS
1.3750-0.1P-0.3L-TS
1.5000-0.1P-0.3L-TS
1.6250-0.1P-0.3L-TS
K
Max.
.748 (19.00)
.862 (21.90)
1.027 (26.10)
1.153 (29.30)
1.291 (32.80)
1.398 (35.50)
1.524 (38.70)
1.642 (41.70)
1.768 (44.90)
L
Max.
1.234 (31.34)
1.234 (31.34)
1.234 (31.34)
1.234 (31.34)
1.234 (31.34)
1.234 (31.34)
1.234 (31.34)
1.234 (31.34)
1.234 (31.34)
Q
Dia Max.
.859 (21.82)
.969 (24.61)
1.141 (28.98)
1.266 (32.16)
1.391 (35.53)
1.500 (38.10)
1.625 (41.28)
1.750 (44.45)
1.875 (47.62)
Metric V
Thread
(Plated)
M12X1-6g0.100R
M15X1-6g0.100R
M18X1-6g0.100R
M22X1-6g0.100R
M25X1-6g0.100R
M28X1-6g0.100R
M31X1-6g0.100R
M34X1-6g0.100R
M37X1-6g0.100R
W
+.008 (.200)
-.004 (.100)
.760 (19.30)
.760 (19.30)
.760 (19.30)
.760 (19.30)
.760 (19.30)
.760 (19.30)
.760 (19.30)
.760 (19.30)
.760 (19.30)
Performance Specifications-Pages A-7, A-8.
Contacts, Sealing Plugs, Assembly Tools - Pages A-26, A-32, A-33.
Contact Arrangements - Pages A-24, A-25.
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
www.ittcannon.com
A-21
Cannon KJA/KJB
MIL-DTL-38999 Series III Connectors
Jam Nut Receptacle
D38999/24
KJA7T
A
Z
Circular
S
B
THREAD
S
C
FLAT
M
A
P
BLUE BAND
(INDICATES REAR
RELEASE CONTACT
RETENTION SYSTEM)
V THREAD
R THREAD
.520 (13.2) MAX.
RED BAND
(FULLY MATED
INDICATOR BAND)
.062 (1.57) MIN./.125 (3.18) MAX.
PANEL THICKNESS
Shell
Size
9
11
13
15
17
19
21
23
25
MS
A
Shell size +.010 (.250)
Code
-.005 (.130)
A
B
C
D
E
F
G
H
J
.104 (2.64)
.104 (2.64)
.104 (2.64)
.104 (2.64)
.104 (2.64)
.135 (3.43)
.135 (3.43)
.135 (3.43)
.135 (3.43)
B Thread
Class 2A
(Plated)
.6250-0.1P-0.3L-TS
.7500-0.1P-0.3L-TS
.8750-0.1P-0.3L-TS
1.0000-0.1P-0.3L-TS
1.1875-0.1P-0.3L-TS
1.2500-0.1P-0.3L-TS
1.3750-0.1P-0.3L-TS
1.5000-0.1P-0.3L-TS
1.6250-0.1P-0.3L-TS
M
P
Z
C
+.004 (.100) +.005 (.130) +.005 (.130) +.016 (.410)
-.010 (.250) -.040 (.100) -.004 (.100) -.004 (.100)
.651 (16.53)
.751 (19.07)
.938 (23.82)
1.062 (26.97)
1.187 (30.15)
1.312 (33.32)
1.437 (36.50)
1.562 (39.67)
1.687 (42.85)
1.243 (31.57)
1.243 (31.57)
1.243 (31.57)
1.243 (31.57)
1.243 (31.57)
1.243 (31.57)
1.243 (31.57)
1.243 (31.57)
1.243 (31.57)
.871 (22.12)
.871 (22.12)
.878 (22.30)
.878 (22.30)
.878 (22.30)
.878 (22.30)
.878 (22.30)
.878 (22.30)
.878 (22.30)
.555 (14.10)
.555 (14.10)
.563 (14.30)
.563 (14.30)
.563 (14.30)
.563 (14.30)
.563 (14.30)
.563 (14.30)
.563 (14.30)
S
1.062 (26.97)
1.250 (31.75)
1.375 (34.92)
1.500 (38.10)
1.625 (41.28)
1.812 (46.02)
1.938 (49.23)
2.062 (52.37)
2.188 (55.38)
Metric R
Thread
(Plated)
M17X1-6g0.100R
M20X1-6g0.100R
M25X1-6g0.100R
M28X1-6g0.100R
M32X1-6g0.100R
M35X1-6g0.100R
M38X1-6g0.100R
M41X1-6g0.100R
M44X1-6g0.100R
Metric V
Thread
(Plated)
M12X1-6g0.100R
M15X1-6g0.100R
M18X1-6g0.100R
M22X1-6g0.100R
M25X1-6g0.100R
M28X1-6g0.100R
M31X1-6g0.100R
M34X1-6g0.100R
M37X1-6g0.100R
Performance Specifications-Pages A-7, A-8.
Contacts, Sealing Plugs, Assembly Tools - Pages A-26, A-32, A-33.
Contact Arrangements - Pages A-24, A-25.
Panel Cutouts
Wall Mounted Receptacle
R1
R2
Jam Nut Receptacle
A
H
B
T
Shell
Size
9
11
13
15
17
19
21
23
25
A
+.010 (.25)
-.000 (.00)
.700 (17.78)
.825 (20.96)
1.010 (25.65)
1.135 (28.83)
1.260 (32.00)
1.385 (35.18)
1.510 (38.35)
1.635 (41.53)
1.760 (44.70)
B
+.000 (.00)
-.010 (.25)
.670 (17.02)
.771 (19.58)
.955 (24.26)
1.085 (27.56)
1.210 (30.73)
1.335 (33.91)
1.460 (37.08)
1.585 (40.26)
1.710 (43.43)
H
+.010 (.25)
-.000 (.00)
.626 (15.90)
.751 (19.08)
.876 (22.25)
1.001 (25.43)
1.188 (30.18)
1.251 (31.78)
1.376 (34.95)
1.511 (38.38)
1.626 (41.30)
R1
(TP)
.719 (18.26)
.812 (20.62)
.906 (23.01)
.969 (24.61)
1.062 (26.97)
1.156 (29.36)
1.250 (31.75)
1.375 (34.92)
1.500 (38.10)
R2
(TP)
.594 (15.09)
.719 (18.26)
.812 (20.62)
.906 (23.01)
.969 (24.61)
1.062 (26.97)
1.156 (29.36)
1.250 (31.75)
1.375 (34.92)
T
(Max.)
.134 (3.40)
.134 (3.40)
.134 (3.40)
.134 (3.40)
.134 (3.40)
.134 (3.40)
.134 (3.40)
.160 (4.06)
.160 (4.06)
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
A-22
www.ittcannon.com
Cannon KJL/KJ/KJA/KJB
MIL-DTL-38999 Series I, II, III Connectors
Polarizing Positions
Series I
C
D
N
A
Angle of Rotation (Degrees)
Shell
Size
9
11
13
15
17
19
21
23
25
Normal
95º
95º
95º
95º
95º
95º
95º
95º
95º
A
77º
81º
75º
74º
77º
77º
77º
80º
80º
B
67º
63º
61º
65º
65º
65º
69º
69º
C
123º
127º
129º
125º
125º
125º
121º
121º
D
113º
109º
115º
116º
113º
113º
113º
110º
110º
A
Circular
B
5º
REF
Front face of receptacle (plug opposite). Insert
arrangement does not rotate with main key-keyway.
The master key is rotated to provide shell polar-
ization; the minor keys remain fixed.
Series II
C
D
N
A
Angle of Rotation (Degrees)
Shell Size
8
10
12
14
16
18
20
22
24
Normal
100º
100º
100º
100º
100º
100º
100º
100º
100º
A
82º
86º
80º
79º
82º
82º
82º
85º
85º
B
72º
68º
66º
70º
70º
70º
74º
74º
C
128º
132º
134º
130º
130º
130º
126º
126º
D
118º
114º
120º
121º
118º
118º
118º
115º
115º
B
10º
REF
Front face of receptacle (plug opposite). Insert
arrangement does not rotate with main key-keyway.
The master key is rotated to provide shell polar-
ization; the minor keys remain fixed.
Series III
RECEPTACLE
(Front face shown)
Shell
Size
MAIN
KEYWAY
AR˚
BSC
9
BR˚
BSC
DR˚
BSC
CR˚
BSC
PLUG
(Front face shown)
MAIN
KEY
AP˚
BSC
BP˚
BSC
DP˚
BSC
CP˚
BSC
11
13
and
15
17
and
19
NOTES
1. All Angles are BSC
2. The insert arrangement does not rotate with
main key/keyway
3. All minor keys are rotated to provide shell
polarization, the master key remains fixed at
twelve o'clock position.
4. Polarization is different from
Series I and II.
21
23
and
25
Key &
Keyway
Arrangement
identifi-
cation
Letter
N
A
B
C
D
E
N
A
B
C
D
E
N
A
B
C
D
E
N
A
B
C
D
E
Key Locations
ARº
or
APº
BSC
105
102
80
35
64
91
95
113
90
53
119
51
80
135
49
66
62
79
80
135
49
66
62
79
BRº
or
BPº
BSC
140
132
118
140
155
131
141
156
145
156
146
141
142
170
169
140
145
153
142
170
169
140
145
153
CRº
or
CPº
BSC
215
248
230
205
234
197
208
182
195
220
176
184
196
200
200
200
180
197
196
200
200
200
180
197
DRº
or
DPº
BSC
265
320
312
275
304
240
236
292
252
255
298
242
293
310
244
257
280
272
293
310
244
257
280
272
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
www.ittcannon.com
A-23
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