AMPHENOL CORPORATION
40-60 Delaware Avenue, Sidney, NY 13838-1395 • 800-678-0141 • www.amphenol-aerospace.com
16617
MIL-DTL-26482, Series 2, Matrix
BAYONET COUPLING CONNECTORS WITH CRIMP REAR RELEASE CONTACTS
1
Contact Amphenol Aerospace for more information at 800-678-0141 • www.amphenol-aerospace.com
MIL-DTL-26482, Series 2, Matrix®
TABLE OF CONTENTS FOR SECTION J
MIL-DTL-26482, Series 2, Matrix®
Design Characteristics, Customer Options ....................................2
Insert Availability and Identication,
Alternate Positioning .....................................................3
Insert Arrangement Drawings ..............................................4, 5
Class Descriptions, Performance Specications ................................6
How to Order (Military and Commercial) ......................................7
Shell Styles:
Wall Mounting Receptacle with Narrow Flange,
Wall Mounting Receptacle with Wide Flange ...................................8
Cable Connecting Receptacle,
Jam Nut Receptacle .....................................................9
Straight Plug,
Straight Plug with RFI Grounding Fingers .....................................10
Contacts and Tools:
Contact Information, Sealing Plugs, Crimping and
Insertion/Removal Tools ..................................................11
Assembly Instructions ....................................................12, 13
J
26482
2Contact Amphenol Aerospace for more information at 800-678-0141 • www.amphenol-aerospace.com
MATRIX 2
J
AMPHENOL AEROSPACE OFFERS THE MATRIX®
PRODUCT LINE OF MIL-DTL-26482*,
SERIES 2 CONNECTORS
This series provides a bayonet coupling connector with crimp rear
insertable, rear releasable contacts.
DESIGN CHARACTERISTICS
• Medium size, environmentally resistant connector
• Recommended operating voltage to 1,000 VAC (RMS)
at sea level
• Quick positive coupling assured by 3 point bayonet
coupling system
• Visual conrmation of complete coupling
• Eliminates mismating by the use of ve key/keyway design
• Insertion and removal of contacts from the rear of the
con nector assures no damage to the front that might affect
the sealing characteristics
• Utilizes same standard qualied rear-release type plastic tool
for contact insertion and removal
• Contacts are qualied to SAE AS39029** requirements – BIN
coded (three color bands), and are crimped with standard
crimp tools per MIL-DTL-22520
• Grommets are constructed of tear-resistant elastomer and
experience no degradation when exposed to a broad range
of uids
• Sealing over a range of wire diameters is assured by a
tri ple webbed grommet at the rear of the connector
• Closed entry socket side of the insert is designed with a
lead-in chamfer and a hard face that will accept a pin
con tact bent within pre-established limits
• Elastomer interfacial seal on the pin side has raised
barri ers around each pin which displace into the socket
cham fer when mated, providing a positive moisture seal
CUSTOMER OPTIONS
• Shell styles within this family include: Wall mount with either a
narrow or a wide ange, jam nut single hole mount, and cable
connecting receptacles, along with standard plugs or plugs
with RFI grounding n gers, in shell sizes 8 to 24
• MS and Proprietary versions available
• Accommodation of contact sizes 20, 16 and 12
• 34 insert arrangement patterns available, accommodating
from a minimum of 3 to a maximum of 55 circuits
• Alternate positioning available
• Various nishes are available
(for information on non-cad mium zinc alloy plating, consult
Amphenol Aerospace)
* MIL-DTL-26482 supersedes MIL-C-26482
** SAE AS39029 supersedes MIL-C-39029
Design Characteristics and Options
MS3470
WALL MOUNTING
RECEPTACLE
WITH NARROW
FLANGE
MS3472
WALL MOUNTING
RECEPTACLE
WITH WIDE FLANGE
MS3471
CABLE CONNECTING
RECEPTACLE
MS3474
JAM NUT RECEPTACLE
MS3476
STRAIGHT PLUG
MS3475
PLUG WITH RFI
GROUNDING
FINGERS
26482
3
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MATRIX 2
J
AB
AB
AB
AB
Insert Availability, Identification & Alternate Rotations
INSERT ARRANGEMENTS
Insert
Arrangement
Service
Rating
Total
Contacts
Contact Size
12 16 20
8-33 I 3 3
8-98 I 3 3
10-6 I 6 6
12-3 II 3 3
12-8 I 8 8
12-10 I 10 10
14-4 I 4 4
14-5 II 5 5
14-9 I 9 4 5
14-12 I 12 4 8
14-15 I 15 1 14
14-18 I 18 18
14-19 I 19 19
16-8 II 8 8
16-23S I 23 1 22
16-26 I 26 26
18-8 I 8 8
18-11 II 11 11
18-30 I 30 1 29
18-32 I 32 32
20-16 II 16 16
20-24S I 24 24
20-39 I 39 2 37
20-41 I 41 41
22-12 I 12 12
22-19S I 19 19
22-21 II 21 21
22-32S I 32 32
22-41 I 41 14 27
22-55 I 55 55
22-95 I 32 6 26
24-19S II 19 19
24-31 I 31 31
24-61 I 61 61
Arrangements designated with an S are tooled in socket only.
Insert
Arrangement
Degrees
W X Y Z
8-33 90 – – –
8-98 – – – –
10-6 90 – – –
12-3 – – 180 –
12-8 90 112 203 292
12-10 60 155 270 295
14-4 45 – – –
14-5 40 92 184 273
14-9 15 90 180 270
14-12 43 90 – –
14-15 17 110 155 234
14-18 15 90 180 270
14-19 30 165 315 –
16-8 54 152 180 331
16-23 158 270 – –
16-26 60 – 275 338
18-8 180 – – –
18-11 62 119 241 340
18-30 180 193 285 350
18-32 85 138 222 265
20-16 238 318 333 347
20-24 70 145 215 290
20-39 63 144 252 333
20-41 45 126 225 –
22-12 – – – –
22-19 15 90 225 308
22-21 16 135 175 349
22-32 72 145 215 288
22-41 39 135 264 –
22-55 30 142 226 314
22-95 26 180 266 –
24-19 30 165 315 –
24-31 90 225 255 –
24-61 90 180 270 324
ALTERNATE ROTATIONS OF INSERT
To avoid cross-plugging problems in applications requiring the
use of more than one connector of the same size and arrange-
ment, alternate rotations are available as indicated in the chart
below.
As shown in the diagram, the front face of the pin insert is rotated
within the shell in a clockwise direction from the normal shell key.
The socket insert would be rotated counter-clockwise the same
number of degrees in respect to the normal shell key.
Position W Position X Position Y Position Z
View looking into front face of pin insert
or rear of socket insert.
26482
4Contact Amphenol Aerospace for more information at 800-678-0141 • www.amphenol-aerospace.com
MATRIX 2
J
Insert Arrangements
Insert Arrangement 8-33 8-98 10-06 12-03 12-08 12-10 14-04 14-05
Service Rating I I I II I I I II
Number of Contacts 3 3 6 3 8 10 4 5
Contact Size 20 20 20 16 20 20 12 16
A
C
B
A
C
B
A
F
E
DC
B
AC
B
A
H
G
F
E
D
C
B
A
D
C
B
Insert Arrangement 14-09 14-12 14-15 14-18 14-19 16-08
Service Rating I I I I I II
Number of Contacts 5 4 8 4 14 1 18 19 8
Contact Size 20 12 20 16 20 16 20 20 16
A
E
DC
B
A
J
H
G
F
E
D
C
B
HA
B
J
G
MK
LCF
DE
A
H
G
F
E
D
C
B
M
L
K
JR
P
N
CONTACT LEGEND 20 16 12
A
D
C
B
H
GF E
M
L
K
JP
N
U
T
SR
A
D
C
B
H
GF
E
M
L
K
JTS
R
P
N
UV
A
D
C
B
H
G
F
E
A
HGF
E
D
C
B
P
N
M
L
K
J
Z
Y
X
W
V
U
T
S
R
A
Z
YXW
V
U
TS
R
P
N
M
L
K
JHG
F
E
D
C
B
ab
c
Insert Arrangement 16-23 16-26 18-08 18-11 18-30
Service Rating I I I II I
Number of Contacts 22 1 26 8 11 29 1
Contact Size 20 16 20 12 16 20 16
A
H
G
F
ED
C
B
A
L
K
J
H
G
F
E
D
C
B
A
ZYX
W
V
U
T
S
R
P
N
M
L
KJH
G
F
E
D
C
B
a
b
c
d
e
f
g
A
Z
Y
X
W
V
U
T
S
R
P
N
M
L
KJHG
F
E
D
C
B
a
b
c
d
e
f
g
h
j
Insert Arrangement 18-32 20-16 20-24 20-39 20-41
Service Rating I II I I I
Number of Contacts 32 16 24 37 2 41
Contact Size 20 16 20 20 16 20
A
M
L
K
J
H
G
F
E
D
C
B
S
RP
N
L
KW
MA
B
XN
YP
C
V
J
ZR
D
E
S
U
T
H
G
F
a
A
Z
Y
X
W
V
U
T
S
R
P
N
M
LKJ
H
G
F
E
D
C
B
a
r
pn
m
k
j
h
g
f
ed
c
b
i
q
A
Z
Y
X
W
V
U
T
S
R
P
NMLK
J
H
G
F
E
D
C
B
a
t
s
r
p
q
n
m
k
j
i
h
g
f
ed
c
b
NOTE: Connectors sold as mil-spec connectors will have mil-spec
markings on the insert (a “snail-trail” designating the numerical path).
Commercial versions will have insert markings as shown here.
Front face of pin insert or rear face of socket insert illustrated
26482
5
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MATRIX 2
J
Insert Arrangements
Insert Arrangement 22-12 22-19 22-21 22-32
Service Rating I I II I
Number of Contacts 12 19 21 32
Contact Size 12 12 16 20
A
M
L
K
J
H
G
FE
D
C
B
A
V
U
T
S
R
P
N
M
L
K
J
H
G
F
E
D
C
B
A
X
W
V
UT
S
R
P
N
M
L
K
J
H
G
F
E
D
C
B
A
Z
Y
X
W
V
U
T
S
R
P
N
M
L
K
J
H
G
F
E
D
C
B
a
j
h
g
fe
d
c
b
A
Z
Y
X
W
V
U
T
S
R
P
NMLK
J
H
G
F
E
D
C
B
a
t
s
r
q
p
n
m
k
j
i
h
g
f
e
d
c
b
A
Z
Y
X
W
V
U
T
S
R
P
N
M
L
KJH
G
F
E
D
C
B
a
x
wv
u
t
s
r
q
p
n
m
y
k
j
i
h
g
fe
d
c
b
z
HH
GG
FF
EE
DD
CC
BB
AA
Insert Arrangement 22-41 22-55 22-95 24-19
Service Rating I I I II
Number of Contacts 27 14 55 26 6 19
Contact Size 20 16 20 20 12 12
A
Z
Y
X
W
V
U
T
S
R
P
N
MLK
J
H
G
F
E
D
C
B
a
i
h
g
f
edc
b
A
VU
T S
R
PN
M
L
K
J
HGF
E
D
C
B
A
X
W
V
U
T
S
R
Q
P
Y
N
M
L
K
J
H
GF
E
D
C
B
Z
a
g
f
e
d
c
b
A
Z
Y
X
W
V
U
T
S
R
PNML
K
J
H
G
F
E
D
C
B
a
z
y
x
w
v
u
t
s
r
p
nm
q
kj
i
h
g
f
e
d
c
b
AA
PP
NN
MM
LL
KK
JJ
HH
GG
FF
EE
DD
CC BB
Insert Arrangement 24-31 24-61
Service Rating I I
Number of Contacts 31 61
Contact Size 16 20
CONTACT LEGEND 20 16 12
Front face of pin insert or rear face of socket insert illustrated
NOTE: Connectors sold as mil-spec connectors will have mil-spec
markings on the insert (a “snail-trail” designating the numerical path).
Commercial versions will have insert markings as shown here.
26482
6Contact Amphenol Aerospace for more information at 800-678-0141 • www.amphenol-aerospace.com
MATRIX 2
J
CLASS DESCRIPTIONS
Military
MIL-DTL-26482, Series 2
Amphenol/Matrix
Commercial MB1
Series
Description
Class L Class R Aluminum shell, electroless nickel nish, uid resistant
Class E – Inactive, superceded by Class L*
Class R – Inactive, superceded by Class L*
Class A Class A Aluminum shell, black non-conductive anodized nish, uid resistant
– Class G Stainless steel shell, passivated, uid resistant
Class W Class W Aluminum shell, olive drab cadmium plated, corrosion/uid resistant
* Ref. MIL-DTL-26482
PERFORMANCE SPECIFICATIONS
SERVICE RATINGS**
Service
Rating
Recommended
Operating AC Voltage
at Sea Level
Test Voltage AC (RMS), 60 cps
Sea Level 50,000 ft. 70,000 ft. 110,000 ft.
I 600 1,500 500 375 200
II 1,000 2,300 750 500 200
** Service Rating is comparable to MS rating A. Miniature connectors rated Service Rating I will provide a minimum ashover voltage at
sea level of 2,000 volts AC (RMS). Service Rating II is comparable to MS Service Rating D, and will provide a minimum ashover voltage
of 2,800 volts AC (RMS) at sea level.
Please note that the electrical data given is not an establishment of electrical safety factors. This is left entirely in the designer’s hands, as
he can best determine which peak voltage, switching surges, transients, etc. can be expected in a particular circuit.
OPERATING TEMPERATURE RANGE
–65°C (–85°F) to 200°C (392°F)
ENVIRONMENTAL SEAL
Wired, mated connectors with the specied accessory
attached will meet the altitude immersion test specied in
MIL-DTL-26482.
DURABILITY
Minimum of 500 mating cycles.
SHOCK AND VIBRATION REQUIREMENTS
When tested as follows, the connector shall sustain no
physical damage, or electrical discontinuity exceeding
one microsecond.
SHOCK:
Pulse of an approximate half sine wave of 300g magnitude
with duration of 3 milliseconds applied in three axes.
VIBRATION:
Sixteen hours of random vibration having a range of 50 to
2,000 Hz with a 41.7G peak level.
Class Descriptions, Performance Specifications
26482
7
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MATRIX 2
J
How to Order
1. 2. 3. 4. 5. 6. 7.
MIL-DTL-26482,
Series 2
Connector
Type
Connector
Style
Service
Class
Shell Size/Insert
Arrangement
Contact
Type
Alternate
Rotation of
Insert
Modification
Number
MILITARY MS 3470 W 12-10 P W NA
COMMERCIAL MB1 0 W 12-10 P W (xxx)
1. MILITARY CONNECTOR TYPE
MS Designates Military Standard
2. CONNECTOR STYLE
3470 Wall mount receptacle with narrow ange
3472 Wall mount receptacle with wide ange
3471 Cable connecting receptacle
3474 Jam nut receptacle
3476 Straight plug
3475 Straight plug with RFI grounding ngers
3. SERVICE CLASS
LAluminum shell, electroless nickel nish, uid
resistant insert
AAluminum shell, black anodized nish,
non-conductive uid resistant insert
WAluminum shell, olive drab cadmium plated,
uid resistant insert
Note: For stainless steel shell, passivated, order by Amphenol®/Matrix®
commercial Class G. Class L inactivates classes E and R (Ref. MIL-DTL-26482)
4. SHELL SIZE & INSERT ARRANGEMENT
FROM CHART ON PAGE J3.
First number represents Shell Size, second number is
the Insert Arrangement.
5. CONTACT TYPE
PPin contacts
SSocket contacts
ALess pins
BLess sockets
6. ALTERNATE ROTATION OF INSERT
“W”, “X”, “Y”, “Z” designate that insert is rotated in its shell
from normal position. No letter required for normal
(no rotation) position. See page J3 for description of
alternate positions. For ordering information on accessories,
such as protection caps and backshell hardware, contact
Amphenol Aerospace.
Use A & B only when other than a full complement of power
contacts is to be installed.
1. COMMERCIAL CONNECTOR TYPE
MB1 Designates Amphenol®/Matrix® Bayonet
Coupling Connector
2. CONNECTOR STYLE
0Wall mount receptacle with narrow ange
1Wall mount receptacle with wide ange
3Cable connecting receptacle
4Jam nut receptacle
6Straight plug
8Straight plug with RFI grounding ngers
3. SERVICE CLASS
AAluminum shell, black anodized nish, non-
conductive, uid resistant insert
BBlack zinc conductive plating. Must also add
modication number (A15) in step 7
CGreen zinc cobalt plating. Must also add
modication number (981) in step 7
RAluminum shell, electroless nickel nish, uid
resistant insert
GStainless steel shell, passivated, uid
resistant insert
WAluminum shell, cadmium plated, olive drab
nish, uid resistant insert
DZ Black zinc nickel
DT Durmalon
4. SHELL SIZE & INSERT ARRANGEMENT
FROM CHART ON PAGE J3.
First number represents Shell Size, second number is
the Insert Arrangement.
5. CONTACT TYPE
PPin contacts
SSocket contacts
6. ALTERNATE ROTATION OF INSERT
“W”, “X”, “Y”, “Z” designate that insert is rotated in its shell
from normal position. No letter required for normal
(no rotation) position. See page J3 for description of
alternate positions.
Consult Amphenol Aerospace for information.
For strain reliefs use the following codes:
7. MODIFICATION NUMBER
(189) E-nut M85049/31 conguration
(190) Straight strain relief M85049/52 conguration
(191) 90° strain relief M85049/51 conguration
(A15) Used with nish class B to designate
conductive black zinc plating.
(981) Used with nish class C to designate
green zinc cobalt plating.
26482
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MATRIX 2
J
Shell
Size
A
Max.
B
±.005
C Dia.
±.003
D Dia.
Max. EF
±.016
H
Accessory Thread
Class 2A
T Dia.
±.005
8 .828 .594 .471 .305 .462/.431 .062 .5000-20 UNF .120
10 .954 .719 .588 .405 .462/.431 .062 .6250-24 UNEF .120
12 1.047 .812 .748 .531 .462/.431 .062 .7500-20 UNEF .120
14 1.141 .906 .873 .665 .462/.431 .062 .8750-20 UNEF .120
16 1.234 .969 .998 .790 .462/.431 .062 1.0000-20 UNEF .120
18 1.328 1.062 1.123 .869 .462/.431 .062 1.0625-18 UNEF .120
20 1.453 1.156 1.248 .994 .587/.556 .094 1.1875-18 UNEF .120
22 1.578 1.250 1.373 1.119 .587/.556 .094 1.3125-18 UNEF .120
24 1.703 1.375 1.498 1.244 .620/.589 .094 1.4375-18 UNEF .147
Shell
Size
A
Max.
B
±.005
C Dia.
±.003
D Dia.
Max. EF
±.016
H
Accessory Thread
Class 2A
8 1.065 .734 .471 .305 .493/.462 .062 .5000-20 UNF
10 1.141 .812 .588 .405 .493/.462 .062 .6250-24 UNEF
12 1.266 .938 .748 .531 .493/.462 .062 .7500-20 UNEF
14 1.360 1.031 .873 .665 .493/.462 .062 .8750-20 UNEF
16 1.453 1.125 .998 .790 .493/.462 .062 1.0000-20 UNEF
18 1.532 1.203 1.123 .869 .493/.462 .062 1.0625-18 UNEF
20 1.688 1.297 1.248 .994 .587/.556 .094 1.1875-18 UNEF
22 1.766 1.375 1.373 1.119 .587/.556 .094 1.3125-18 UNEF
24 1.891 1.500 1.498 1.244 .620/.589 .094 1.4375-18 UNEF
Wall Mounting Receptacle (with Narrow Flange)
Military (MS3470), Commercial (MB10)
Wall Mounting Receptacle (with Wide Flange)
Military (MS3472), Commercial (MB11)
All dimensions for reference only.
All dimensions for reference only.
A Max. Ty p.
B Ty p.
Master
Keyway
T Dia. Mounting
Holes Ty p. 4-Places
C Dia.
1.405 Max.
Shell 8 Thru 18
1.465 Max.
Shell 20, 22, & 24
3 Teeth
Equally Spaced
120 Apart
H Accessory
Thread
D Dia. Max.
Grommet
EF
.290 Min. Full Thread
.190
.130 Grommet
Extension
Blue
Color
Bands
°
C Dia.
1.405 Max.
Shell 8 Thru 18
1.465 Max.
Shell 20, 22, & 24
3 Teeth
Equally Spaced
120 Apart
H Accessory
Thread
D Dia. Max.
Grommet
EF
.290 Min. Full Thread
.190
.130 Grommet
Extension
Blue Color
Bands
°
A Max. Ty p.
B Ty p.
Master
Keyway
.150 Dia. Mounting
Holes Ty p. 4-Places
MB10
PART NUMBER BUILDER Page J7
MILITARY
MS3470
Commercial
MB11
PART NUMBER BUILDER Page J7
MILITARY
MS3472
Commercial
26482
9
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MATRIX 2
J
Cable Connecting Receptacle
Military (MS3471), Commercial (MB13)
Jam Nut Receptacle
Military (MS3474), Commercial (MB14)
All dimensions for reference only.
Shell
Size
A
Max.
B Dia.
±.020
C Dia.
±.003
D Dia.
Max. EF
±.016
H
Accessory Thread
Class 2A
8 .828 .938 .471 .305 .462/.431 .062 .5000-20 UNF
10 .954 1.062 .588 .405 .462/.431 .062 .6250-24 UNEF
12 1.047 1.156 .748 .531 .462/.431 .062 .7500-20 UNEF
14 1.141 1.250 .873 .665 .462/.431 .062 .8750-20 UNEF
16 1.234 1.344 .998 .790 .462/.431 .062 1.0000-20 UNEF
18 1.328 1.438 1.123 .869 .462/.431 .062 1.0625-18 UNEF
20 1.453 1.562 1.248 .994 .587/.556 .094 1.1875-18 UNEF
22 1.578 1.688 1.373 1.119 .587/.556 .094 1.3125-18 UNEF
24 1.703 1.812 1.498 1.244 .620/.589 .094 1.4375-18 UNEF
Shell
Size
A
Max.
B
±.005
C Dia.
±.003
D Dia.
Max. E F
H
Accessory Thread
Class 2A
J
Mounting Thread
Class 2A
K
Max.
8 .954 .525 .471 .305 .707/.658 .113/.086 .5000-20 UNF .5625-24 UNEF .767
10 1.078 .650 .588 .405 .707/.658 .113/.086 .6250-24 UNF .6875-24 UNEF .892
12 1.266 .813 .748 .531 .707/.658 .113/.086 .7500-20 UNEF .8750-20 UNEF 1.079
14 1.391 .937 .873 .665 .707/.658 .113/.086 .8750-20 UNEF 1.0000-20 UNEF 1.205
16 1.516 1.061 .998 .790 .707/.658 .113/.086 1.0000-20 UNEF 1.1250-18 UNEF 1.329
18 1.641 1.186 1.123 .869 .707/.658 .113/.086 1.0625-18 UNEF 1.2500-18 UNEF 1.455
20 1.828 1.311 1.248 .994 .772/.721 .148/.096 1.1875-18 UNEF 1.3750-18 UNEF 1.579
22 1.954 1.436 1.373 1.119 .772/.721 .148/.096 1.3125-18 UNEF 1.5000-18 UNEF 1.705
24 2.078 1.561 1.498 1.244 .772/.721 .148/.096 1.4375-18 UNEF 1.6250-18 UNEF 1.829
All dimensions for reference only.
A Max. Ty p.
Master Keyway
B
K Max.
Ty p.
.290 Min. Full Thread
.190
.130
Grommet
Extension
C
Dia.
1.405 Max
Shell 8 Thru 18
1.465 Max.
Shell 20, 22, & 24
EF
H Accessory
Thread
D Dia. Max.
Grommet
Blue Color Band
Blue
Color
Band
J Mounting Thread
Lockwire Hole
3-Places Equally Spaced
3 Teeth
Equally Spaced
120 Apart
°
A Max. Ty p.
Master
Keyway
B Dia. Blue Color
Bands
C
Dia.
H Accessory Thread
.190
.130 Grommet
Extension
D Dia. Max
Grommet
1.405 Max.
Shell 8 Thru 18
1.465 Max.
Shell 20, 22, &24
EF
.290 Min.
Full Thread
3 Teeth
Equally Spaced
120 Apart
°
MB13
PART NUMBER BUILDER Page J7
MILITARY
MS3471
Commercial
MB14
PART NUMBER BUILDER Page J7
MILITARY
MS3474
Commercial
26482
10 Contact Amphenol Aerospace for more information at 800-678-0141 • www.amphenol-aerospace.com
MATRIX 2
J
Shell
Size
A Dia.
Max.
B Dia.
Max.
H
Accessory Thread
Class 2A
8 .782 .305 .5000-20 UNF
10 .926 .405 .6250-24 UNEF
12 1.043 .531 .7500-20 UNEF
14 1.183 .665 .8750-20 UNEF
16 1.305 .790 1.0000-20 UNEF
18 1.391 .869 1.0625-18 UNEF
20 1.531 .994 1.1875-18 UNEF
22 1.656 1.119 1.3125-18 UNEF
24 1.777 1.244 1.4375-18 UNEF
Straight Plug
Military (MS3476), Commercial (MB16)
Straight Plug (With RFI Grounding Fingers)
Military (MS3475), Commercial (MB18)
Shell
Size
A Dia.
Max.
B Dia.
Max.
H
Accessory Thread
Class 2A
8 .782 .305 .5000-20 UNF
10 .926 .405 .6250-24 UNEF
12 1.043 .531 .7500-20 UNEF
14 1.183 .665 .8750-20 UNEF
16 1.305 .790 1.0000-20 UNEF
18 1.391 .869 1.0625-18 UNEF
20 1.531 .994 1.1875-18 UNEF
22 1.656 1.119 1.3125-18 UNEF
24 1.777 1.244 1.4375-18 UNEF
All dimensions for reference only.
All dimensions for reference only.
A Dia.
Max.
Over
Knurl
Master
Keyway
.190
.130
Grommet
Extension
B Dia. Max
Grommet
Blue Color
Band
.290 Min. Full Thread
H Accessory Thread
3 Teeth
Equally Spaced
120 Apart
°
1.420 Max.
.320 Min.
Fully Coupled
Indicators
A Dia.
Max.
Over
Knurl
1.420 Max.
.320 Min.
Fully Coupled
Indicators
.190
.130 Grommet
Extension
B Dia. Max
Grommet
Blue Color
Band
RFI
Fingers
Master
Keyway
.290 Min. Full Thread
H Accessory Thread
3 Teeth
Equally Spaced
120 Apart
°
MB16
PART NUMBER BUILDER Page J7
MILITARY
MS3476
Commercial
MB18
PART NUMBER BUILDER Page J7
MILITARY
MS3475
Commercial
26482
11
Contact Amphenol Aerospace for more information at 800-678-0141 • www.amphenol-aerospace.com
MATRIX 2
J
CRIMP CONTACTS
Contact
Size
Wire Range Socket Contacts Pin Contacts
AWG mm2 Military
Part Number
Amphenol/Matrix
Part Number
Military
Part Number
Amphenol/Matrix
Part Number
20 24-20 0.2-0.6 M39029/5-115 M5100-001-0020L M39029/4-110 M5000-054-0020L
16 20-16 0.5-1.4 M39029/5-116 M5100-001-0016L M39029/4-111 M5000-054-0016L
12 14-12 2-3 M39029/5-118 M5100-001-0012L M39029/4-113 M5000-054-0012L
CONTACT CURRENT RATING AND RETENTION
Contact
Size*
DC Test
Amperage
Contact Retention
Axial Load
lb. N
20 7.5 20 89.0
16 13.0 25 111.2
12 23.0 30 133.4
* Organize individual circuits to maintain heat rise within
operating temperature requirements.
SEALING PLUGS
Contact
Size
Sealing Plugs
Military
Part Number
Amphenol/Matrix
Part Number
20 MS27488-20-2 10-405996-202
16 MS27488-16-2 10-405996-162
12 MS27488-12-2 10-405996-122
CRIMPING TOOLS
Contact
Size
Wire Range Finished Wire Dia. Range Crimping Tool
Part Number
Turret or Positioner
Part Number
AWG mm2Inch mm
20 24-20 0.2-0.6 .040-.083 1.02-2.11 M22520/1-01 or
M22520/2-01
M22520/1-02 or
M22520/2-02
16 20-16 0.5-1.4 .053-.103 1.34-2.62 M22520/1-01 M22520/1-02
12 14-12 2-3 .097-.158 2.46-4.01 M22520/1-01 M22520/1-02
Contact Information, Sealing Plugs, Crimping and
Insertion/Removal Tools
INSERTION/REMOVAL TOOLS
Contact
Size Color Code Military
Part Number
Amphenol/Matrix
Part Number
20 Red/White M81969/14-11 10-538988-201
16 Blue/White M81969/14-03 10-538988-016
12 Yellow/White M81969/14-04 10-538988-012
Note: Each connector is furnished with contacts. One spare for
inserts requiring 1 to 26 of each contact, two spares for inserts with
more than 26 contacts, and a minimum of one sealing plug up to 15%
of the number of contacts.
26482
12 Contact Amphenol Aerospace for more information at 800-678-0141 • www.amphenol-aerospace.com
MATRIX 2
J
Assembly Instructions
Military (MS3476), Commercial (MB16)
CONTACT INSERTION
1. First remove hardware from the plug
and receptacle and slide the hardware
over wires in proper sequence.
2. Use proper plastic or metal insertion
tool for corresponding contact. (Consult
tool table on preceding page). Slide correct
tool (with plastic tool use colored end) over
wire insulation and slide forward until tool
bottoms against rear contact shoulder.
3. Next align the tool and contact up to
the properly identied cavity at rear of
connector plug. Use rm, even
pressure; do not use excessive
pressure. It is recommended to start at
the center cavity. Contact must be
aligned with grommet hole and not
inserted at an angle. Push forward until
contact is felt to snap into position
within insert.
Continued on next page.
Note: All plastic tools are double-ended.
The colored side is the insertion tool and
the white side is the removal tool. Metal tool with contact.
Plastic tool with contact in proper position.
TABLE 1
STRIPPING DIMENSIONS
Contact
Size
Wire Dimension (inches)**
Min. Max.
12 .040 .083
16 .053 .103
20 .097 .153
** Min. diameters to ensure moisture proof assembly;
max. diameters to permit use of metal removal tools.
WIRE STRIPPING
1. Strip wire to required length. (See Figure at right). When using
hot wire stripping do not wipe melted insulation material on wire
strands; with mechanical strippers do not cut or nick strands.
2. See Table 1 for proper nished outside wire dimensions.
3. Twist strands together to form a rm bundle.
4. Insert stripped wire into contact applying slight pressure until wire insulation
butts against wire well. Check inspection hole to see that wire strands are visible. If
there are strayed wire strands, entire wire end should be re-twisted.
When wire is stripped and properly installed into contact, the next step is to crimp
the wire inside the contact by using the proper crimping tool.
CRIMPING
See table on preceding page for recommended
M22520 series crimping tools, turret head or
positioner selection settings according to
contact size, part number and wire gauge size.
VISUAL INSPECTION
HOLE
1. Insert stripped wire into contact crimp pot.
Wire must be visible through inspection hole.
2. Using correct crimp tool and locator, cycle
the tool once to be sure the indentors are
open, insert contact and wire into locator.
Squeeze tool handles rmly and completely to
insure a proper crimp. The tool will not release
unless the crimp indentors in the tool head
have been fully actuated.
3. Release crimped contact and wire from
tool. Be certain the wire is visible through
inspection hole in contact.
A
Wire Size A
20 .188 (4.77)
16 .188 (4.77)
12 .188 (4.77)
Example M22520 Series Crimping Tool for
size 20, 16 or 12 contacts, and has a posi-
tioner that can be dialed for each contact size.
26482
13
Contact Amphenol Aerospace for more information at 800-678-0141 • www.amphenol-aerospace.com
MATRIX 2
J
CONTACT INSERTION, CONT.
4. Remove tool and pull back lightly on
wire, making sure contact stays
properly seated and isn’t dragged back
with the tool. Repeat operation with
remainder of contacts to be inserted,
beginning with the center cavity and
working outward in
alternating rows.
5. After all contacts are inserted,
ll any empty cavities with wire
sealing plugs. (Refer to sealing
plug charts for Series III on page
18, for Series I, II, and SJT on
page 19.
6. Reassemble plug or receptacle hardware
- slide forward and tighten using connector
pliers. Connector holding tools are recom-
mended while tightening back
accessories. When using strain relief,
center wires at bar clamp. Slide clamp
grommet into position and tighten clamp bar
screws. When tightening screws,
pressure should be applied in the same
direction that clamp is threaded to rear
threads of connector. When not using clamp
grommet, build up wire bundle
with vinyl tape so clamp bar will
maintain pressure on wires.
CAUTION when inserting or removing contacts, do not
spread or rotate tool tips.
CONTACT REMOVAL
1. Remove hardware from plug or
receptacle and slide hardware back
along wire bundle.
2. Use proper plastic or metal
removal tool for corresponding
contact. (Consult tool table on page
277). Slide correct size tool over wire
insulation.
3. Insert plastic or metal removal tool into
contact cavity until tool tips enter rear
grommet and come to a positive stop. Hold
tool tip rmly against positive stop on
contact shoulder. Grip wire and simultane-
ously remove tool and contact. (On occa-
sion, it may be necessary to remove tool,
rotate 90° and reinsert.)
Use white end of plastic tool for
removal of contacts.
Removal of contacts with metal tool.
Assembly Instructions
Military (MS3476), Commercial (MB16)