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MKJ Series Connectors
The Challenge
ITT has a long history of providing standard and custom MIL-DTL-38999 connectors which meet the most stringent military requirements.
ITT’s major military and commercial accounts recently approached us requesting that we take our proven high reliabilty designs and shrink them
to decrease weight and size while maintaining the connectors robust environmental performance and high reliability. Along with these requests,
ICS received substantial commentary from other markets including Medical, Industrial, and Space, requesting a similar, miniature circular product.
Split tine contact design provides proven
reliability in harsh environments
Connector uses size 23 contacts
accepting #22 to #28 wire. Contact
spacing is reduced to 0.076 inches
providing a compact yet robust package.
Mini Circular
B
MKJ connector provides significant size
and weight reduction while providing
electrical and mechanical characteristics
of larger connectors
Master key and 2 secondary keys allow
multiple clocking positions
Intergral band platform allows direct
attachment of cable shield to connector.
Pogo pin/pad technology. Touch pad
contacts increase ease of cleanability,
highly desireable in harsh environments.
Double start threads prevent thread
damage and allow full connector mating
in 1.5 turns. Durable design ideal for
harsh shock and vibration environments.
Breakaway design incorporates a simple
push/pull mating mechanism allowing
quick connector disconnect.
The ITT Solution …
ITT took on the challenge, driving innovation in mating capabilities and contacts to reduce size and weight while maintaining the high
level of quality customers have come to expect from ITT over 90 years of engineering excellence. ITT collated a substantial amount of industry
VOC from top tier military and commercial accounts. This feedback arrived from industry leading ICS customers, pioneering products in
their fields including satellites & missiles, test and medical equipment, and tactical battlefield gear. Using this information and leveraging
our historical product expertise, ITT engineered a product meeting our customers defined mix of Design, Functionality, and Flexibility. The
result of this process represents our innovative new product line, Trinity. Offering three coupling methodologies {threaded, bayonet, and
breakaway} and a highly engineered design, this innovative product reduces weight and size without sacrificing robust environmental
performance or reliability. ITT ICS is proud to introduce our exciting new Trinity product line, engineered to the stringent quality
standards for which ITT is world renown.
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
B-30
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MKJ Series Connectors
Technical overview
The Trinity MKJ family of mini circular connectors provides approximate electrical and mechanical characteristics of larger and heavier
Military Standard Environmental connectors while reducing weight up to 71% and size up to 52%. All MKJ series connector’s shells
and jam nuts are available in high quality aluminum alloy or corrosion resistant steel per AMS-QQ-S 763. The MKJ series comes with
rear accessory thread or integral band platform for direct attachment of cable shield and overmold. The MKJ series of connectors come
with a variety of coupling mechanisms: threaded, breakaway, and bayonet. In addition, a Pogo Pin technology utilizing ITT’s unique
spring probe pin/touch pad contact system is available. The MKJ series receptacle comes with a variety of mounting options for both
crimp and PCB contacts including in-line, jam nut, front mount, and square flange mount, and flange mount. The MKJ0, MKJ1, MKJ3,
MKJ4, and MKJ5 feature a master key and 2 secondary keys for positive mating with 4 clocking positions available. The MKJ0 connector is ideal for everyday operations where size and weight are at a premium. The MJK1 connector uses a double start thread coupling
with 1/1/2 turns for a full mate and is ideal for harsh shock and vibration environments. The MKJ3 connector can be fully mated in a
1/4 turn. The MKJ4 connector provides a quick push to mate / pull to unmate disconnect mechanism for fast breakaway connections.
The MKJ5 connector utilizes a triple start thread and is fully mated in 1 turn, and is an ideal connector for harsh shock and vibration
environments and offers an internal coupling ratchet mechanism along with an EMI grounding spring.
Applications
• High contact density: size 23 contacts accommodate
#22 - #28 wire and allowing 0.076 inch contact spacing
• Available with 3-85 rear release crimp or PCB contacts
• Master key with 2 secondary keys. 4 clocking positions available
• Significant weight and size reduction compared to traditional
Mil Standard environmental connectors
• Available in jam nut, in-line, and square flange rear crimp
receptacle versions. Jam nut and square flange PCB receptacle
versions
• Rear accessory thread or integral band platform for direct
attachment of cable shield or overmold
• Wire seal grommet for rear environmental sealing.
Pin fluorosilicone interfacial seal provides interface sealing
• Available with double start threads allowing full mating in
1.5 turns
• Available with quick push/pull breakaway mechanism utilizing
canted retention spring for quicker mating and demating
• Available with bayonet 1/4 turn locking mechanism
• Available with Pogo Pin technology utilizing ITT’s unique spring
probe pin/pad contact system
•
•
•
•
•
•
•
•
•
•
Medical equipment: test and diagnostic
Industrial equipment
Commecial and militray aircraft electronics
Unmanned aerial vehicles
Missile systems
Avionic systems
Satellites
Sensors
Instrumentation
Interconnections for helmets, weapons, battery packs,
night vision goggles, aircraft headsets, etc.
• Navigation and Telemetry equipment
• Ruggedized computers and hand held communications equipment
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
www.ittcannon.com
B-31
B
Mini Circular
Product Features
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MKJ Series Connectors
MKJ Connector Styles
MKJ0
MKJ3
UNC Thread
Coupling
Bayonet Coupling
MKJ1
Mini Circular
B
Double Start Thread
Coupling
MKJ4
MKJ5
Breakaway Coupling
Triple Start Ratchet
Locking
Multiple Styles for all applications!
Series MKJ Performance
Contact size / Spacing
Contact Type
Wire Accomodation
Current Rating
Voltage Rating
Insulation Resistance
Operating Temperature
Contact Resistance
Vibration
Shock
EMI Shielding Effectiveness
Coupling
Coding
Housing material
Layouts
Usage
Receptacle Mounting
#23 / 0.076 inches (1.9 mm)
Solder Cup, Rear Crimp or PCB Mount
#22 - #28 AWG
5 Amps Maximum
500 VAC RMS Sea Level
5000 Megaohms Minimum
-55 degrees C to +150 degrees C
8 Milliohms Maximum
20 g’s in Accordance with MIL-STD-1344 Method 2005, Condition IV
300 g’s (MKJ1) 50 g’s (MKJ0 and MKJ4) in Accordance with
MIL-STD-1344 Method 2004, Condition E
40dB Attenuation, 100 MHz to 1000 MHz
Threaded, Quick Disconnect Pogo Pin
Master key and 2 secondary keys. 4 clocking positions available
Aluminum and Stainless Steel
31 layouts holding from 1 size 12 contact to 85 size 23 contacts
Medical, Military, Commercial, and Industrial
Jam Nut, Square Flange, In-line, PCB
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
B-32
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Page 33
MKJ Series Connectors
Electrical specifications for the connector
The MKJ series of products uses size 23 pin and socket contacts with equivalent electrical performance of size 22 contacts. These smaller contacts accept
#22 - #28 AWG wire and allow the contact spacing to be reduced down to 0.076 inches. The connector’s Fortron dielectric insulating material can accommodate from 3 to 85 contacts in various shell sizes. This high density packaging, along with a reduced wall thickness and scoop, allows a dramatic decrease
in size and weight of the MKJ connector while retaining the approximate mechanical and electrical characteristics of heavier and larger Military Standard
Enviromental connectors. The connector is capable of operating between -55 degrees Celsius and +150 degrees Celsius and can be mated up to 2,000
cycles. Maximum electrical current is 5 Amps and maximum voltage at sea level is 500 VAC RMS.
Max. Voltage
Max. Current
Operating Temp
Durability
500 VAC RMS Sea Level
5 Amps Maximum
-55 degrees C to +150 degrees C
2,000 mated cycles
MKJ Product Line Talking Dog
MKJ1
C
F
9-19
C
2
SERIES
MKJ0 - Threaded Coupling, UN Thread
MKJ1 - Threaded Coupling, Double Start ACME Thread
MKJ3 - Bayonet Coupling
MKJ4 - Breakaway/Quick Disconnect
MKJ5 - Threaded Coupling, Triple start ACME Thread
F
P
CLASS
AEnvironmental Plug and Receptacle
with Banding/Overmolding Platform
BEnvironmental Plug and Receptacle
with Threaded Accessory Attachment
CBack- Potted Receptacle
SHELL
1267-
STYLE
In-Line Receptacle
Square Flange Receptacle
Straight Plug
Jam Nut Receptacle
N
SIZE/CONTACT ARRANGEMENT
3 Size 23 Contacts Series MKJ0,
4 Size 23 Contacts Series MKJ0,
6 Size 23 Contacts Series MKJ0,
7 Size 23 Contacts Series MKJ0,
10 Size 23 Contacts Series MKJ0,
4 Size 23 Contacts Series MKJ5
6 Size 23 Contacts Series MKJ5
7 Size 23 Contacts Series MKJ5
13 Size 23 Contacts Series MKJ0,
4 Size 16 Contacts Series MKJ0,
10 Size 23 Contacts Series MKJ5
19 Size 23 Contacts Series MKJ0,
13 Size 23 Contacts Series MKJ5
26 Size 23 Contacts Series MKJ0,
19 23 Contacts
Series MKJ5
26 Size 23 Contacts Series MKJ5
37 Size 23 Contacts Series MKJ0,
37 Size 23 Contacts Series MKJ1
55 Size 23 Contacts Series MKJ0,
37 Size 23 Contacts Series MKJ5
55 Size 23 Contacts Series MKJ0,
55 Size 23 Contacts Series MKJ1
85 Size 23 Contacts Series MKJ1
55 Size 23 Contacts Series MKJ5
85 Size 23 Contacts Series MKJ5
MKJ1,
MKJ1,
MKJ1,
MKJ1,
MKJ1,
MKJ3,
MKJ3,
MKJ3,
MKJ3,
MKJ3,
MKJ4
MKJ4
MKJ4
MKJ4
MKJ4
MKJ1, MKJ3, MKJ4
MKJ1, MKJ3, MKJ4
MKJ1, MKJ3, MKJ4
MKJ1, MKJ3, MKJ4
N
**
Pin, PC Tail, .0.062 Extension
Pin, PC Tail, 0.109 Extension
Socket, PC Tail, 0.062 Extension
Socket, PC Tail, 0.109 Extension
Pin, Pogo, Crimp, Removable
Pad, Pogo, Crimp, Removable
Pin, Solder Cup
Socket, Solder Cup
SHELL CLOCKING (POSITION)
MKJ0 Series
N - Normal
X - Clocking Position X
Y - Clocking Position Y
Z - Clocking Position Z
MKJ1 Series
A - Normal 150° 210°
B - Clocking Position B 75° 210°
C - Clocking Position C 95° 230°
D - Clocking Position D 140° 275°
MKJ3 Series
N - Normal 150° 210°
X - Clocking Position X 75° 210°
Y - Clocking Position Y 95° 230°
Z - Clocking Position Z 140° 275°
MKJ4 Series
Omit for Single Key/Keyway
A - Normal 150° 210°
B - Clocking Position B 75° 210°
C - Clocking Position C 95° 230°
D - Clocking Position D 140° 275°
MKJ5 Series
A - Normal 150° 210°
B - Clocking Position B 75° 210°
C - Clocking Position C 95° 230°
D - Clocking Position D 140° 275°
MKJ1, MKJ3, MKJ4
**
MKJ3, MKJ4
MKJ3, MKJ4
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
www.ittcannon.com
P
CONTACT STYLE
PPin, Crimp, Removable
SSocket, Crimp, Removable
ABCDGOL R -
MATERIAL/PLATING
CAluminum/Anodize, Black
FAluminum/Electroless Nickel
WAluminum/OD Cad
ZAluminum/Zinc Nickel, Black
KSS/Passivated
YSS/Zinc Nickel, Black
SHELL
5-3
6-4
6-6
6-7
7-10
8-4
8-6
8-7
8-13
9-4
9-10
9-19
10-13
10-26
11-19
12-26
12-37
13-37
14-55
15-37
15-55
16-55
17-85
18-55
19-85
9 -19
B-33
MODIFICATION CODES
F0 - Less Contacts ("F0" not printed on connector)
(No modification code required for standard product)
Consult Factor for other codes
B
Mini Circular
2
MKJ1
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Page 34
MKJ0 Connectors
The MKJ0 is ideal for light duty applications where
weight and cost take a precedence. The connector
comes with 5 high density contact arrangements,
multiple clocking positions, a banding platform,
and rear grommets and pin interfacial seals. Used
in avionics, aerospace, medical, and industrial
applications.
Specifications
Mini Circular
B
Contact Type
Rear crimp or PCB mount
Contacts
Size 23 (0.076" spacing), Size 16 (.177” spacing)
Wire Size
#22 - #28 AWG (Size 23 Contacts), #16 - #20 AWG (Size 16 Contacts)
Contact Rating
5 Amps Maximum
Voltage Rating
500 VAC RMS sea level
Insulation Resistance
5,000 Megaohms minimum
Operating Temperature
-55°C to +150°C
Contact Resistance
8 Milliohms maximum
Vibration
20 g’s in accordance with MIL-STD-1344 Method 2005, Condition IV
Shock
50 g’s in accordance with MIL-STD-1344 Method 2004, Condition E
Durability
2,000 mating cycles
Receptacle Mounting
Jam nut, PCB mount or Wall mount
EMI Shielding
40db attenuation, 100Mhz to 1000Mhz
Coupling
UN Threaded
Materials
Shells - Aluminum Alloy or Stainless Steel
Insulators - Thermoplastic
Seals - Flurosilicone
Contacts - Copper alloy with gold over nickel plating
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
B-34
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MKJ0 Connectors
MKJ0 Plug (Banding Platform)
B
Mini Circular
Socket Insert
Pin Insert
MKJ0 PLUG DIMENSIONS
LAYOUT
ØA
B THREAD
UN-2B
ØC
PIN
SOCKET
6-4
.500
.3750-28
.290
3.6
4.1
6-7
.500
.3750-28
.290
3.8
4.2
7-10
.620
.4375-28
.390
5.8
6.6
9-19
.750
.5625-32
.500
8.4
9.8
12-37
.880
.7500-28
.650
11.7
14.2
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
www.ittcannon.com
MAX WEIGHT IN GRAMS
B-35
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Page 36
MKJ0 Connectors
Plug Connector Orientation Front Side
Mini Circular
B
Note: Pin insert front side shown for reference only. Socket insert is mirror image.
MKJ0 Plug Barrel Clocking Positions
REF
For Shell Sizes 5 and 6, the Master
Key is at top dead center. For Shell
Sizes 7 and up, the Master and
Minor keys are rotated 90° counterclockwise. Minor keys remain stationary, with the Master key rotating to
achieve alternate clocking positions
for all Shell Sizes.
BARREL CLOCKING
REF
ORIENTATION FOR SIZES 5 & 6
(N - CLOCKING SHOWN)
POSITION
K1°
N (normal)
150°
X
140°
Y
130°
Z
120°
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
B-36
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Page 37
MKJ0 Connectors
MKJ0 Jam Nut Receptacle (Banding Platform)
SIZES 5 & 6)
B
MKJ0 JAM NUT RECEPTACLE DIMENSIONS
ØA
LAYOUT FLANGE DIA.
B FLAT
C FLAT
D THREAD
UN-2A
ØF
G
MAX WEIGHT
IN GRAMS
PIN
SOCKET
6-4
.610
.356
.562
.3750-28
.290
.051
3.3
3.8
6-7
.610
.356
.562
.3750-28
.290
.051
3.4
3.8
7-10
.670
.420
.635
.4375-28
.390
.093
4.9
5.7
9-19
.875
.534
.806
.5625-32
.500
.093
7.3
8.7
12-37
1.062
.714
.986
.7500-28
.650
.093
11.6
14.4
Socket Insert
Pin Insert
Panel Cutouts
LAYOUT
H FLAT
±.002
ØJ
6-4
.363
.386
6-7
.363
.386
7 - 10
.426
.449
9 - 19
.540
.574
12 - 37
.722
.760
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
www.ittcannon.com
B-37
Mini Circular
SIZES 5 & 6)
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Page 38
MKJ0 Connectors
MKJ0 Jam Nut Receptacle (PCB Mount)
SIZES 5 & 6)
Mini Circular
B
MKJ0 JAM NUT RECEPTACLE DIMENSIONS
ØA
LAYOUT FLANGE
DIA.
B FLAT
C FLAT
D THREAD
UN-2A
ØF
G
MAX WEIGHT
IN GRAMS
PIN
SOCKET
6-4
.610
.356
.562
.3750-28
.322
.051
3.5
4.0
6-7
.610
.356
.562
.3750-28
.322
.051
3.8
4.2
7-10
.670
.420
.635
.4375-28
.432
.093
5.3
6.2
9-19
.875
.534
.806
.5625-32
.512
.093
8.1
9.7
12-37
1.062
.714
.986
.7500-28
.677
.093
13.7
16.6
Pin Insert
Socket Insert
Panel Cutouts
LAYOUT
H FLAT
±.002
ØJ
6-4
.363
.386
6-7
.363
.386
7 - 10
.426
.449
9 - 19
.540
.574
12 - 37
.722
.760
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
B-38
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Page 39
MKJ0 Connectors
Receptacle Connector Orientation Front Side
B
Mini Circular
Note: Pin insert front side shown for reference only. Socket insert is a mirror image.
MKJ0 Receptacle Shell Clocking Positions
For Shell Sizes 5 and 6, the Master
Key is at top dead center. For Shell
Sizes 7 and up, the Master and
Minor keys are rotated 90° clockwise.
Minor keys remain stationary, with
the Master rotating to achieve alternate clocking positions for all Shell
Sizes.
REF
SHELL CLOCKING
POSITION
K1°
N (normal)
150°
X
140°
Y
130°
Z
120°
REF
ORIENTATION FOR SIZES 5 & 6
(N - CLOCKING SHOWN)
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
www.ittcannon.com
B-39
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Page 40
MKJ1 Connectors
The MKJ1 is a robust connector meeting MIL-DTL-38999
shock and vibration requirements. Plug connector comes
with an anti-decoupling spring for vibration resistance. Ideal
for harsh environments where a robust electrical connection
is required under the most demanding shock and vibration
conditions. Proven design for avionics, satellites, and
missile systems.
Specifications
Mini Circular
B
Contact Type
Rear crimp or PCB mount
Contacts
Size 23 (0.076" spacing), Size 16 (.177” spacing)
Wire Size
#22 - #28 AWG (Size 23 Contacts), #16 - #20 AWG (Size 16 Contacts)
Contact Rating
5 Amps Maximum
Voltage Rating
500 VAC RMS sea level
Insulation Resistance
5,000 Megaohms minimum
Operating Temperature
-55°C to +150°C
Contact Resistance
8 Milliohms maximum
Vibration
40 g’s in accordance with MIL-STD-1344 Method 2005, Condition IV
Shock
300 g’s in accordance with MIL-STD-1344 Method 2004, Condition E
Durability
2,000 mating cycles
Receptacle Mounting
Jam nut or Wall Mount
EMI Shielding
40db attenuation, 100Mhz to 1000Mhz
Coupling
Double Start Threaded
Materials
Shells - Aluminum Alloy or Stainless Steel
Insulators - Thermostatic
Seals - Flurosilicone
Contacts - Copper alloy with gold over nickel plating
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
B-40
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Page 41
MKJ1 Connectors
MKJ1 Plug (Banding Platform)
B
Mini Circular
Socket Insert
Pin Insert
MKJ1 PLUG DIMENSIONS
ØA
B THREAD
(ACME DOUBLE START)
ØC
PIN
SOCKET
6-4
.600
.375- .05P .1L -2B
.290
5.0
5.5
6-7
.600
.375- .05P .1L -2B
.290
5.1
5.5
7-10
.680
.4375- .05P .1L -2B
.390
6.9
7.7
9-19
.810
.5625- .05P .1L -2B
.500
9.4
10.9
13-37
1.050
.8125- .05P .2L -2B
.650
18.9
21.7
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
www.ittcannon.com
MAX WEIGHT IN GRAMS
LAYOUT
B-41
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Page 42
MKJ1 Connectors
Plug Connector Orientation Front Side
Mini Circular
B
Note: Pin insert front side shown for reference only. Socket insert is a mirror image.
MKJ1 Plug Barrel Clocking Positions
Master keyway remains stationary at top
dead center for all sizes and clocking.
BARREL CLOCKING
POSITION
K1°
K2°
A (NORMAL)
150°
210°
B
75°
210°
C
95°
230°
D
140°
275°
Barrel Clocking
(A- Clocking Shown)
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
B-42
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Page 43
MKJ1 Connectors
MKJ1 Jam Nut Receptacle (Banding Platform)
SHELL, RECEPTACLE
B
ØA
LAYOUT
B FLAT C FLATS
FLANGE DIA.
D THREAD
(ACME DOUBLE START)
E THREAD
UN-2A
ØF
MAX WEIGHT IN
GRAMS
PIN
SOCKET
6-4
.635
.410
.595
.375- .05P .1L -2A
.4375-2B
.290
4.1
4.6
6-7
.635
.410
.595
.375- .05P .1L -2A
.4375-2B
.290
4.2
4.6
7-10
.755
.536
.723
.4375- .05P .1L -2A
.5625-2B
.390
6.2
7.0
9-19
.830
.596
.790
.5625- .05P .1L -2A
.625-2B
.500
7.8
9.3
13-37
1.078
.845
1.044
.8125- .1P .2L -2A
.875-2B
.650
14.6
17.3
Socket Insert
Pin Insert
Panel Cutouts
LAYOUT
H FLAT
±.002
ØJ
6-4
.420
.448
6-7
.420
.448
7 - 10
.551
.573
9 - 19
.609
.635
13 - 37
.859
.885
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
www.ittcannon.com
B-43
Mini Circular
MKJ1 JAM NUT RECEPTACLE DIMENSIONS
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Page 44
MKJ1 Connectors
MKJ1 PCB Jam Nut Receptacle (PCB Mount)
Mini Circular
B
MKJ1 JAM NUT RECEPTACLE DIMENSIONS
ØF
MAX WEIGHT IN
GRAMS
PIN
SOCKET
.4375-28
.322
4.4
4.9
.375- .05P .1L -2A
.4375-28
.322
4.7
5.1
.723
.4375- .05P .1L -2A
.5625-28
.432
6.9
7.7
.596
.790
.5625- .05P .1L -2A
.625-28
.512
9.2
10.7
.845
1.044
.8125- .1P .2L -2A
.875-28
.677
17.1
19.9
LAYOUT
ØA
FLANGE
DIA.
6-4
.635
.410
.595
.375- .05P .1L -2A
6-7
.635
.410
.595
7-10
.755
.536
9-19
.830
13-37
1.078
B FLAT C FLATS
D THREAD
E THREAD
UN-2A
(ACME DOUBLE START)
Socket Insert
Pin Insert
Panel Cutouts
LAYOUT
H FLAT
±.002
ØJ
6-4
.420
.448
6-7
.420
.448
7 - 10
.551
.573
9 - 19
.609
.635
13 - 37
.859
.885
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
B-44
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Page 45
MKJ1 Connectors
Receptacle Connector Orientation Front Side
B
Mini Circular
Note: Socket insert front side shown for reference only. Pin insert is a mirror image.
MKJ1 Receptacle Shell Clocking Positions
Master keyway is perpendicular with
B Flat for all sizes and remains stationary
at top dead center for all clockings.
SHELL CLOCKING
POSITION
K1°
K2°
A (NORMAL)
150°
210°
B
75°
210°
C
95°
230°
D
140°
275°
Shell Clocking
(A- Clocking Shown)
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
www.ittcannon.com
B-45
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MKJ3 Connectors
The MKJ3 is ideal for quick mating, light duty applications
whereweight and cost take a precedence. The connector
comes with 7 high density contact arrangements,
multiple clocking positions and a rear banding platform
or accessory threads for backshell applications, and a
rear grommet and pin interfacial seals. Used in avionics,
aerospace, medical, and industrial applications.
Specifications
Mini Circular
B
Contact Type
Rear crimp or PCB mount
Contacts
Size 23 (0.076" spacing), Size 16 (.177” spacing)
Wire Size
#22 - #28 AWG (Size 23 Contacts), #16 - #20 AWG (Size 16 Contacts)
Contact Rating
5 Amps Maximum
Voltage Rating
500 VAC RMS sea level
Insulation Resistance
5,000 Megaohms minimum
Operating Temperature
-55°C to +150°C
Contact Resistance
8 Milliohms maximum
Vibration
37 g’s in accordance with MIL-STD-1344 Method 2005, Condition IV
Shock
300 g’s in accordance with MIL-STD-1344 Method 2004, Condition E
Durability
250 mating cycles (Aluminum) or 2,000 mating cycles (Stainless Steel)
Receptacle Mounting
Jam nut or Wall Mount
EMI Shielding
40db attenuation, 100Mhz to 1000Mhz
Coupling
Bayonet
Materials
Shells - Aluminum Alloy or Stainless Steel
Insulators - Thermostatic
Seals - Flurosilicone
Contacts - Copper alloy with gold over nickel plating
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
B-46
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MKJ3 Connectors
MKJ3 Plug (Banding Platform)
B
Mini Circular
Pin Insert
Socket Insert
MKJ3 PLUG DIMENSIONS
LAYOUT
ØA
ØB
6-4
.565
.290
6-7
.565
.290
7-10
.650
.390
8-13
.750
.440
9-19
.790
.500
10-26
.875
.562
12-37
.944
.650
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
www.ittcannon.com
B-47
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Page 48
MKJ3 Connectors
Connector Orientation Front Side
Mini Circular
B
Note: Pin insert front side shown for reference only. Socket insert is a mirror image.
MKJ4 Receptacle Shell Clocking Positions
For all Shell Sizes and Clockings, the
Master Keyway remains stationary at top
dead center, with minor keys rotating to
achieve alternate clocking positions.
SHELL CLOCKING
POSITION
K1°
K2°
N (NORMAL)
150°
210°
X
75°
210°
Y
95°
230°
Z
140°
275°
Barrel Clocking
(N- Clocking Shown)
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
B-48
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MKJ3 Connectors
MKJ3 Jam Nut Receptacle (Banding Platform)
B
ØA
LAYOUT FLANGE
DIA. B FLAT
C FLAT
D THREAD
UN-2A
ØE
ØF
H FLAT
ØJ
MAX WEIGHT
IN GRAMS
6-4
.635
.595
.410
.4375-28
.290
.362
.415
.445
TBD
6-7
.635
.595
.410
.4375-28
.290
.362
.415
.445
TBD
7-10
.755
.723
.536
.5625-32
.390
.436
.541
.572
TBD
8-13
.755
.723
.536
.5625-32
.440
.508
.541
.583
TBD
9-19
.830
.790
.596
.6250-28
.500
.561
.601
.643
TBD
10-26
.890
.855
.656
.6875-28
.562
.635
.671
.720
TBD
12-37
1.078
1.044
.845
.8750-28
.650
.714
.850
.885
TBD
Pin Insert
Socket Insert
Panel Cutouts
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
www.ittcannon.com
B-49
Mini Circular
MKJ0 JAM NUT RECEPTACLE DIMENSIONS
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Page 50
MKJ3 Connectors
MKJ3 Jam Nut Receptacle (PCB Mount)
Mini Circular
B
MKJ0 JAM NUT RECEPTACLE DIMENSIONS
LAYOUT
ØA
FLANGE DIA.
B FLAT
C FLAT
D THREAD
UN-2A
ØF
H FLAT
ØJ
MAX WEIGHT
IN GRAMS
6-4
.635
.595
.410
.4375-28
.362
.415
.445
TBD
6-7
.635
.595
.410
.4375-28
.362
.415
.445
TBD
7-10
.755
.723
.536
.5625-32
.436
.541
.572
TBD
8-13
.755
.723
.536
.5625-32
.508
.541
.583
TBD
9-19
.830
.790
.596
.6250-28
.561
.601
.643
TBD
10-26
.890
.855
.656
.6875-28
.635
.671
.720
TBD
12-37
1.078
1.044
.845
.8750-28
.714
.850
.885
TBD
Pin Insert
Socket Insert
Panel Cutouts
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
B-50
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Page 51
MKJ3 Connectors
Connector Orientation Front Side
B
Mini Circular
Note: Pin insert front side shown for reference only. Socket insert is a mirror image.
MKJ3 Shell Clocking Positions
For all Shell Sizes and Clockings, the
Master Keyway remains stationary at top
dead center, with minor keys rotating to
achieve alternate clocking positions.
SHELL CLOCKING
POSITION
K1°
K2°
N (NORMAL)
150°
210°
X
75°
210°
Y
95°
230°
X
140°
275°
Shell Clocking
(N- Clocking Shown)
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
www.ittcannon.com
B-51
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Page 52
MKJ4 Connectors
The MKJ4 features a canted retention spring disconnect
coupling mechanism. This durable coupling mechanism
allows quick and easy mating and demating of the
connector. Ideal for battlefield and medical device
equipment.
Specifications
Mini Circular
B
Contact Type
Rear crimp
Contacts
Size 23 (0.076" spacing), Size 16 (.177” spacing)
Wire Size
#22 - #28 AWG (Size 23 Contacts), #16 - #20 AWG (Size 16 Contacts)
Contact Rating
5 Amps Maximum
Voltage Rating
500 VAC RMS sea level
Insulation Resistance
5,000 Megaohms minimum
Operating Temperature
-55°C to +150°C
Contact Resistance
8 Milliohms maximum
Vibration
20 g’s in accordance with MIL-STD-1344 Method 2005, Condition IV
Shock
50 g’s in accordance with MIL-STD-1344 Method 2004, Condition E
Durability
2,000 mating cycles
Receptacle Mounting
Jam Nut
EMI Shielding
400db attenuation, 100Mhz to 1000Mhz
Coupling
Quick disconnect (Canted Spring)
Materials
Shells - Aluminum Alloy or Stainless Steel
Insulators - Thermoplastic
Seals - Flurosilicone
Contacts - Copper alloy with gold over nickel plating
Canted Coil - Stainless Steel
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
B-52
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Page 53
MKJ4 Connectors
MKJ4 Plug (Banding Platform)
B
Mini Circular
Socket Insert
Pin Insert
MKJ4 PLUG DIMENSIONS
LAYOUT
ØA
ØB
ØC
PIN
SOCKET
6-4
.485
.310
.290
2.5
3.0
6-7
.485
.310
.290
2.6
3.1
7-10
.565
.380
.390
3.7
4.5
9-19
.660
.480
.500
5.1
6.6
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
www.ittcannon.com
MAX WEIGHT IN GRAMS
B-53
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MKJ4 Connectors
Connector Orientation Front Side
Mini Circular
B
Note: Pin insert front side shown for reference only. Socket insert is a mirror image.
Connectors shown withour minor keys.
MKJ4 Receptacle Shell Clocking Positions
For all Shell Sizes and Clockings, the
Master Keyway remains stationary at top
dead center, with minor keys rotating to
achieve alternate clocking positions.
SHELL CLOCKING
Shell Clocking
(A- Clocking Shown)
POSITION
K1°
K2°
A (NORMAL)
150°
210°
B
75°
210°
C
95°
230°
D
140°
275°
NO
DESIGNATION
MASTER KEY ONLY
NO MINOR KEYS
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
B-54
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MKJ4 Connectors
MKJ4 In-Line Receptacle (Banding Platform)
B
Mini Circular
Socket Insert
Pin Insert
MKJ4 RECEPTACLE DIMENSIONS
LAYOUT
ØA
ØB
PIN
SOCKET
6-4
.520
.290
6.3
6.8
6-7
.520
.290
6.4
6.9
7-10
.580
.390
7.8
8.6
9-19
.695
.500
10.7
12.1
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
www.ittcannon.com
MAX WEIGHT IN GRAMS
B-55
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MKJ4 Connectors
Receptacle Connector Orientation Front Side
Mini Circular
B
Note: Pin insert front side shown for reference only. Socket insert is a mirror image.
Connectors shown without minor key ways.
MKJ4 Receptacle Shell Clocking Positions
For all Shell Sizes and Clockings, the
Master Keyway remains stationary at top
dead center, with minor keys rotating to
achieve alternate clocking positions.
SHELL CLOCKING
POSITION
K1°
K2°
A (NORMAL)
150°
210°
B
75°
210°
C
95°
230°
D
140°
275°
NO
DESIGNATION
MASTER KEYWAY ONLY
NO MINOR KEYWAYS
Shell Clocking
(A- Clocking Shown)
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
B-56
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MKJ Connectors
PCB Layout Dimensions
B
Mini Circular
Note: Layouts for pin connectors shown. Socket connectors are a mirror image.
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
www.ittcannon.com
B-57
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MKJ Connectors
PCB Layout Dimensions
Note: Layouts for pin connectors shown. Socket connectors are a mirror image.
Mini Circular
B
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
B-58
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MKJ Accessories
Format Sheet-Tooling and Contacts MKJ
Crimp Contacts
Pin Contacts (Size 23)
Socket contacts (Size 23)
030-9649-000
031-9750-000
Contact Area Plating:
50 Micro inches Gold over Nickel
Accommodates Sizes #22-28 AWG Wire
Crimp Tool
Contact Crimp Tool
Locator
995-0002-293
995-0002-297
B
Mini Circular
Contact Insertion/Extraction Tools
Insertion Tool
995-0002-295
Extraction Tool
995-0002-294
Banding Tools
Hand banding Tool
1/8” bands (100 pk)
995-0002-298
995-0002-299
Banding Tools
PART NUMBER
USE ON JAMNUT
SIZE / PN
317-2187-000
MKJ1 (6) MKJ0 (7)
317-2187-001
MKJ1 (7) MKJ0 (9)
317-2187-002
MKJ1 (9)
317-2187-003
MKJ1 (13)
317-2187-006
MKJ0 (6)
317-2187-007
MKJ0 (12)
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
www.ittcannon.com
B-59
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MKJ Accessories
Backshells
MKJ Banding Backshell Designator - Talking Dog
MKJB
S- 7 - 6 - W
MKJB
Straight/90°
S=Straight
N=90°
C= Clamp
Mini Circular
B
Shell Material: 6061-T6 Aluminum
Clamp
Straight
90°
Plating
W= OD Cad/Ni
F = Nickel
Backshell Designator
1, 2, 3, 4, 5, 6,
7, 8
(See Below Table)
Backshell
Designator
1
2
Shell
Style
MKJ0,
MKJ1,
MKJ3,
MKJ4
MKJ0,
MKJ1,
MKJ3,
MKJ4
Shell
Size
(05)
Straight
(06)
Straight
Length (straight)
6 = .750"
8 = 1.00"
0 = 90° or Clamp Version
Backshell Designator Table
3
4
MKJ5
MKJ0,
MKJ1,
MKJ3,
MKJ4
(08)
Straight
(07)
Straight
5
MKJ5
MKJ0,
MKJ1,
MKJ3,
MKJ4
(09)
Straight
(08)
Straight
6
MKJ5
MKJ0,
MKJ1,
MKJ3,
MKJ4
(10)
Straight
(09)
Straight
7
MKJ5
MKJ0,
MKJ1,
MKJ3,
MKJ4
(11)
Straight
(10)
Straight
8
MKJ5
MKJ0,
MKJ1,
MKJ3,
MKJ4
MKJ5
(12)
Straight
(12)
Straight
(13)
Straight
Heat Shrink Boot
Material: Fluid resistant elastomer
MKJ Heat Shrink Boot P/N's - Straight
Shell Size
ITT P/N
5, 6, 7
980-2010-017
8, 9
980-2010-018
10, 11, 12, 13
980-2010-019
Adhesive: Polyamide hot melt
MKJ Heat Shrink Boot P/N's - 90°
Shell Size
ITT P/N
5, 6, 7
980-2010-020
8, 9
980-2010-021
10, 11, 12, 13 980-2010-022
Metal Dust Caps
MKJ Aluminum Dustcap Designator- Talking Dog
MKJD
Shell Style
0, 1, 3, 4, 5
Shell Size
5, 6, 7, 8, 9,
11, 12 , 13
Shell Material: Alluminum Alloy
1- 7 - P - F
Plating
W= OD Cad
F = Nickel
Z = Black Zinc Nickel
Gender
P= Plug
R= Receptacle
No Size 11 or 12 dustcaps are available on MKJ1
No size 11 or 13 dustcaps are available on MKJ0, MKJ3, & MKJ4
No size 5, 6, 7, or 13 dustcaps are available on MKJ5
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
B-60
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