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MIL–DTL– 26482 S 2
MIL-DTL-26482
Features and Application
Series 2
– –
Features and Application
MIL-DTL-26482 Series 2, bayonet coupling, rear-removable
crimp contact connectors were designed as an upgrade to
MIL-DTL-26482 Series 1. Series 2 connectors are inter-
mountable and interchangeable with both solder and
front-release crimp Series 1. They are also identical to the
inactivated MIL-DTL- 83723 Series I connectors.
Series 2 connectors are widely used on commercial, military
and aerospace systems requiring general-purpose, miniature
cylindrical bayonet coupling connectors.
This family of connectors is offered in 4 receptacle-mounting
styles. They include narrow flange wall mounting receptacles,
wide flange wall mounting receptacles, cable connecting
receptacles and jam nut mounting receptacles which incorpo-
rate “O” ring seals, designed for rear panel “D” hole mounting.
Plugs are available in two designs, with and without RFI
grounding.
Thirty-three insert arrangements per MIL-STD-1669 are
tooled and qualified to MIL-DTL-26482 Series 2, utilizing
3 to 61 M39029 contacts. Contacts come in sizes 20, 16 and
12, terminating wire sizes from 24 to 12 gauge.
These connectors are available in wide range of shell
materials and finishes. Aluminum shells are offered in
electroless nickel, olive drab cadmium and black anodic.
Other finishes such as zinc nickel are available upon request
to commercial callouts only. In addition, we offer passivated
stainless steel shells with standard environment-resisting
inserts (commercial callouts only), and for highly corrosive
environments, nickel-aluminum-bronze shells with standard
environment-resisting inserts (commercial callouts only).
Universal I/R Tool – A single, expendable plastic tool is used
for both insertion and removal of contacts.
Insert Polarization – Alternate insert clocking positions aid
in mating of adjacent connectors having identical insert
arrangement.
Closed-Entry Socket Insert – Hard dielectric socket face
has lead-in chamfers for positive alignment of pins (even
partially bent within pre-established limits) with sockets.
Interfacial Pin Insert Seal – Raised moisture barriers
around each pin, which mate into lead-in chamfers of hard
face socket insert, provide individual contact sealing.
Interfacial seal is never touched by service tools.
Elastomer Wire Sealing Grommet – Sealing over a wide
range of wire diameters is assured by a triple wire seal in
each cavity at the rear of the connector.
Superior Contact Stability – Rear release crimp contact
system features a stamped beryllium-copper retaining clip
captivated by molded-in shoulders of each contact cavity in
the insulator. A rear-inserted M81969 plastic tool expands
the tines beyond the shoulder, releasing the contact.
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MIL–DTL– 26482 S 2
MIL-DTL-26482
Performance Specifications
Series 2
– –
Performance Specifications
Operating Temperature Range
Classes A, L and S*: -55°C to +200°C (-67°F to +392°F)
Classes W and ZC*: -55°C to +175°C (-67°F to +347°F)
Material and Finish Data (Class)
A–aluminum shell, black anodized finish
L–aluminum shell, electroless nickel finish
W– aluminum shell, olive drab cadmium over nickel base
S* – stainless steel shell, passivated
Z* – aluminum shell, zinc nickel finish
Corrosion Resistance
Classes A, S*, W and ZC* withstand 500-hour salt spray.
Class L withstands 48-hour salt spray.
Environmental Seal
Wired, mated connectors with specified accessories
attached, shall meet the altitude-immersion test specified in
MIL-DTL-26482 Series 2.
Fluid Resistance
Connectors resist specified immersions in MIL-PRF-7808
(lubricating oil), MIL-PRF-23699 (lubricating oil),
MIL-PRF-5606 (hydraulic fluid), M2-V Chevron oil,
Coolanol 25, ASTM D4814 (gasoline), SAE-AMS1424 Type I
(defrosting fluid), MIL-DTL-5624 (JP-5), and solvents
specified in Method 215 of MIL-STD-202.
* Not on QPL, can be supplied to Aero-Electric P/N only.
Durability
Mated connectors withstand a minimum of 250 mating
cycles for RFI plug (MS3475) and 500 cycles for standard
plug (MS3476).
Shock and Vibration Requirements
Wired, mated connectors shall not be damaged, coupling
ring shall not loosen, and there shall be no interruption of
electrical continuity longer than one microsecond when
subjected to the following:
Shock
Mated connectors withstand a pulse of approximate half
sine wave of 300 G magnitude with duration of three
milliseconds applied in each direction of the three major axes.
Vibration
Mated connectors withstand the following vibration levels:
●Random vibration per MIL-STD-202, method 214, test
condition II, letter J.
Shielding Effectiveness
RFI attenuation at the specified frequency meets the
requirements of MIL-DTL-26482 Series 2.
●RFI shielding effectiveness of mated connectors with
RFI backshells is measured in a triaxial radio frequency
leakage fixture.
Shell-to-Shell Conductivity
●With RFI spring fingers, the maximum potential drop
shall not exceed 5 millivolts.
●Without spring fingers, the maximum potential drop
shall not exceed 200 millivolts.
Service
Rating
Suggested Operating Voltage** Test Voltage Test Voltage Test Voltage Test Voltage
(Sea Level) Sea Level 50,000 Ft. 70,000 Ft. 110,000 Ft.
AC (RMS) DC V RMS V RMS V RMS V RMS
I 600 850 1,500 500 375 200
II 1,000 1,275 2,300 750 500 200
Voltage Rating
** To be used by designer only as a guide.
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MIL–DTL– 26482 S 2
MIL-DTL-26482
Part Number Development
Series 2
Military and Aero-Electric Part Number Development
– –
* Not on QPL, can be supplied to Aero part number only. Consult factory
for availability.
Note 1: Each connector is furnished with contacts unless
ordered less contacts (L/C) as follows: One spare contact for
inserts requiring 2 to 26 of each contact and two spares for
inserts with 27 or more of each size, and a minimum of one
sealing plug up to 15% of the number of contacts. In addition,
one plastic insetion/removal tool of each size is included.
Note 2: Proper part number marking has no “0” in front
of single digit shell size ( 8) and no “0” after the dash
between shell size and single digit layout. Example of each:
J MS3470W8-33P and J MS3470W10-6P. In both “N” for
normal was omitted. As indicated above, “J” or “JAN” must
be marked in front of MIL part number.
Note 3: Insert layouts 8-2, 8-3 and 8-4 can only be ordered
to Aero-Electric part number. Non standard contacts are
required and to avoid confusion are sold “with contacts”
only. See page 80 for the correct contact part numbers.
Mil. Prefix MS34 70 L 12 - 10 P W
Aero Prefix AE7 70 L 12 - 10 P W -340
Shell type
70 = Narrow flange receptacle
71 = Cable connecting receptacle
72 = Wide flange receptacle
74 = Jam nut receptacle
75 = RFI grounding plug
76 = Straight plug
Class (Material and Finish)
A= Aluminum shell, black anodized finish (not available in RFI plug)
L= Aluminum shell, electroless nickel finish
W= Aluminum shell, olive drab cadmium over electroless nickel base
S* = Stainless steel shell, passivated (Aero part number only)
Z* = Aluminum shell, zinc nickel finish (Aero part number only)
Shell Size
8, 10, 12, 14, 16, 18, 20, 22 or 24
Insert Arrangement
See pages 82 thru 85
Contact Style
P= Pin
S= Socket
A= Pin connector less pins (with intent to use non-std contact)
B= Socket connector less sockets (with intent to use non-std contacts)
Polarization
N= Normal (not included in part number)
W, X, Y or Z= Alternate insert polarizations (see pages 82 thru 83 for position availability)
Modification (applies to Aero part numbers only)
01 = Less contacts (is not marked on the part)
340 = Connector kitted with M85049/31-XXX E-nut
341 = Connector kitted with M85049/52-1-XXX straight clamp
342 = Connector kitted with M85049/51-1-XXX right angle clamp
Consult factory for other modifications
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MIL–DTL– 26482 S 2
MS3470
Narrow Flange Receptacle
AE770
Bayonet Coupling, Crimp Removable, Rear Release
– –
Page 71 Completed Part Number
Page 80 Contacts, Sealing Plugs and Tools
Pages 84, 85 Insert Arrangements
Page 70 Performance Specifications
Pages 82, 83 Insert Availability and Contact Information
Page 82 Polarization
Note: Maximum grommet O.D. is same as ⭋C MAX on
page 74.
BLUE COLOR BAND
MAX PANEL THICKNESS & SCREWHEAD
.087(2.21) S.S. 8–18
.212(5.38) S.S. 20–24
MAX PANEL
THICKNESS
.125(3.18)
BLUE COLOR BAND
B
4x [ C
MOUNTING HOLES
MASTER
KEYWAY
[ H
4 MINOR KEYWAYS
3 BAYONET PINS
F
A
MAX
3 ACCESSORY TEETH
.190 (4.83)
.130 (3.30)
GROMMET EXTENSION
G ACCESSORY THREAD
E.290
(7.37)
MIN
FULL
THREAD
D
MAX
Shell
Size
A B ⭋C D E F G ⭋H
+.016 +.41 Accessory Thread
Maximum (TP) ±.005 ±.13 Maximum ±.016 ±.41 -.015 -.38 Class 2A ±.003 ±.08
inch mm inch mm inch mm inch mm inch mm inch mm inch mm
8 .828 21.03 .594 15.09 .120 3.05 1.215 30.86 .062 1.57 .446 11.33 1/2-20UNF .471 11.96
10 .954 24.23 .719 18.26 .120 3.05 1.215 30.86 .062 1.57 .446 11.33 5/8-24UNEF .588 14.94
12 1.047 26.59 .812 20.62 .120 3.05 1.215 30.86 .062 1.57 .446 11.33 3/4-20UNEF .748 19.00
14 1.141 28.98 .906 23.01 .120 3.05 1.215 30.86 .062 1.57 .446 11.33 7/8-20UNEF .873 22.17
16 1.234 31.34 .969 24.61 .120 3.05 1.215 30.86 .062 1.57 .446 11.33 1-20UNEF .998 25.35
18 1.328 33.73 1.062 26.97 .120 3.05 1.215 30.86 .062 1.57 .446 11.33 1-1/16-18UNEF 1.123 28.52
20 1.453 36.91 1.156 29.36 .120 3.05 1.275 32.39 .094 2.39 .571 14.50 1-3/16-18UNEF 1.248 31.70
22 1.578 40.08 1.250 31.75 .120 3.05 1.275 32.39 .094 2.39 .571 14.50 1-5/16-18UNEF 1.373 34.87
24 1.703 43.26 1.375 34.93 .147 3.73 1.275 32.39 .094 2.39 .604 15.34 1-7/16-18UNEF 1.498 38.05
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MIL–DTL– 26482 S 2
MS3471
Cable Connecting Receptacle
AE771
Bayonet Coupling, Crimp Removable, Rear Release
– –
Note: Maximum grommet O.D. is same as ⭋C MAX on
page 74.
Page 71 Completed Part Number
Page 80 Contacts, Sealing Plugs and Tools
Pages 84, 85 Insert Arrangements
Page 70 Performance Specifications
Pages 82, 83 Insert Availability and Contact Information
Page 82 Polarization
BLUE COLOR BANDS
[ B
MASTER
KEYWAY
A
MAX .290
(7.37)
MIN
FULL
THREAD
4 MINOR KEYWAYS
3 BAYONET PINS
[ F
ED
C
MAX
G ACCESSORY THREAD
3 ACCESSORY TEETH
.190 (4.83)
.130 (3.30)
GROMMET EXTENSION
Shell
Size
A⭋B C D E ⭋F G
+.016 +.41 Accessory Thread
Maximum ±.020 ±.51 Maximum ±.016 ±.41 -.015 -.38 ±.003 ±.08 Class 2A
inch mm inch mm inch mm inch mm inch mm inch mm
8 .828 21.03 .938 23.83 1.215 30.86 .062 1.57 .446 11.33 .471 11.96 1/2-20UNF
10 .954 24.23 1.062 26.97 1.215 30.86 .062 1.57 .446 11.33 .588 14.94 5/8-24UNEF
12 1.047 26.59 1.156 29.36 1.215 30.86 .062 1.57 .446 11.33 .748 19.00 3/4-20UNEF
14 1.141 28.98 1.250 31.75 1.215 30.86 .062 1.57 .446 11.33 .873 22.17 7/8-20UNEF
16 1.234 31.34 1.344 34.14 1.215 30.86 .062 1.57 .446 11.33 .998 25.35 1-20UNEF
18 1.328 33.73 1.438 36.53 1.215 30.86 .062 1.57 .446 11.33 1.123 28.52 1-1/16-18UNEF
20 1.453 36.91 1.562 39.67 1.275 32.39 .094 2.39 .571 14.50 1.248 31.70 1-3/16-18UNEF
22 1.578 40.08 1.688 42.88 1.275 32.39 .094 2.39 .571 14.50 1.373 34.87 1-5/16-18UNEF
24 1.703 43.26 1.812 46.02 1.275 32.39 .094 2.39 .604 15.34 1.498 38.05 1-7/16-18UNEF
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MIL–DTL– 26482 S 2
MS3472
Wide Flange Receptacle
AE772
Bayonet Coupling, Crimp Removable, Rear Release
– –
Page 71 Completed Part Number
Page 80 Contacts, Sealing Plugs and Tools
Pages 84, 85 Insert Arrangements
Page 70 Performance Specifications
Pages 82, 83 Insert Availability and Contact Information
Page 82 Polarization
Shell
Size
A B ⭋C D E F G ⭋H
+.016 +.41 Accessory Thread
Maximum (TP) Maximum Maximum ±.016 ±.41 -.015 -.38 Class 2A ±.003 ±.08
inch mm inch mm inch mm inch mm inch mm inch mm inch mm
8 1.065 27.05 .734 18.64 .305 7.75 1.215 30.86 .062 1.57 .477 12.12 1/2-20UNF .471 11.96
10 1.141 28.98 .812 20.62 .405 10.29 1.215 30.86 .062 1.57 .477 12.12 5/8-24UNEF .588 14.94
12 1.266 32.16 .938 23.83 .531 13.49 1.215 30.86 .062 1.57 .477 12.12 3/4-20UNEF .748 19.00
14 1.360 34.54 1.031 26.19 .665 16.89 1.215 30.86 .062 1.57 .477 12.12 7/8-20UNEF .873 22.17
16 1.453 36.91 1.125 28.58 .790 20.07 1.215 30.86 .062 1.57 .477 12.12 1-20UNEF .998 25.35
18 1.532 38.91 1.203 30.56 .869 22.07 1.215 30.86 .062 1.57 .477 12.12 1-1/16-18UNEF 1.123 28.52
20 1.688 42.88 1.297 32.94 .994 25.25 1.275 32.39 .094 2.39 .571 14.50 1-3/16-18UNEF 1.248 31.70
22 1.766 44.86 1.375 34.93 1.119 28.42 1.275 32.39 .094 2.39 .571 14.50 1-5/16-18UNEF 1.373 34.87
24 1.891 48.03 1.500 38.10 1.244 31.60 1.275 32.39 .094 2.39 .604 15.34 1-7/16-18UNEF 1.498 38.05
[ .150±.005
([ 3.81±.13)
MOUNTING HOLES 4 MINOR KEYWAYS
3 BAYONET PINS
MASTER
KEYWAY
B
A
MAX
[ H
FE
D
MAX
G ACCESSORY THREAD
.190 (4.83)
.130 (3.30)
GROMMET EXTENSION
3 ACCESSORY TEETH
[ C
MAX
GROMMET
.290
(7.37)
MIN
FULL
THREAD
BLUE COLOR BAND
MAX PANEL THICKNESS & SCREWHEAD
.118(3.00) S.S. 8–18
.212(5.38) S.S. 20–24
BLUE COLOR BAND
MAX PANEL
THICKNESS
.125(3.18)
.190 (4.83)
.130 (3.30)
GROMMET EXTENSION
.290(7.37)
MIN
FULL THREAD
[ B
AC MAX
G
ACCESSORY THREAD
(SAME AS FOR MS3472
ON PREVIOUS PAGE)
H THREAD
E
D
3X REAR ACCESSORY TEETH
BLUE COLOR BAND
S.S. 8–18
S.S. 20–24
PANEL THICKNESS
.187(4.75)
.062(1.57)
.250(6.35)
.062(1.57)
"O" RING
BLUE COLOR BAND
3 BAYONET PINS
HEX NUT
PER MS3186
EXCEPT FOR THICKNESS
F
FLAT
.125(3.18)
.108(2.74)
MASTER
KEYWAY
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MIL–DTL– 26482 S 2
MS3474
Jam Nut Receptacle
AE774
Bayonet Coupling, Crimp Removable, Rear Release
– –
Page 71 Completed Part Number
Page 80 Contacts, Sealing Plugs and Tools
Pages 84, 85 Insert Arrangements
Page 70 Performance Specifications
Pages 82, 83 Insert Availability and Contact Information
Page 82 Polarization
Shell
Size
A⭋B C D E F H
+.000 +.00 +.000 +.00 Flat Jam Nut
-.031 -.79 -.031 -.79 Maximum ±.005 ±.13 Thread
inch mm inch mm inch mm inch mm inch mm inch mm UNEF-2A
8 .954 24.23 1.078 27.38 1.215 30.86 .113/.086 2.87/2.18 .707/.658 17.96/16.71 .525 13.34 9/16-24
10 1.078 27.38 1.203 30.56 1.215 30.86 .113/.086 2.87/2.18 .707/.658 17.96/16.71 .650 16.51 11/16-24
12 1.266 32.16 1.391 35.33 1.215 30.86 .113/.086 2.87/2.18 .707/.658 17.96/16.71 .813 20.65 7/8-20
14 1.391 35.33 1.516 38.51 1.215 30.86 .113/.086 2.87/2.18 .707/.658 17.96/16.71 .937 23.80 1-20
16 1.516 38.51 1.641 41.68 1.215 30.86 .113/.086 2.87/2.18 .707/.658 17.96/16.71 1.061 26.95 1-1/8-18
18 1.641 41.68 1.766 44.86 1.215 30.86 .113/.086 2.87/2.18 .707/.658 17.96/16.71 1.186 30.12 1-1/4-18
20 1.828 46.43 1.954 49.63 1.275 32.39 .148/.096 3.76/2.44 .772/.721 19.61/18.31 1.311 33.30 1-3/8-18
22 1.954 49.63 2.078 52.78 1.275 32.39 .148/.096 3.76/2.44 .772/.721 19.61/18.31 1.436 36.47 1-1/2-18
24 2.078 52.78 2.203 55.96 1.275 32.39 .148/.096 3.76/2.44 .772/.721 19.61/18.31 1.561 39.65 1-5/8-18
Note: Maximum grommet O.D. is same as ⭋E MAX on
page 76.
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MIL–DTL– 26482 S 2
MS3476
Straight Plug
AE776
Bayonet Coupling, Crimp Removable, Rear Release
– –
Page 71 Completed Part Number
Page 80 Contacts, Sealing Plugs and Tools
Pages 84, 85 Insert Arrangements
Page 70 Performance Specifications
Pages 82, 83 Insert Availability and Contact Information
Page 82 Polarization
BLUE COLOR BAND
.190 (4.83)
.130 (3.30)
GROMMET EXTENSION
1.230(31.24)
MAX
.320(8.13)
MIN
.290
(7.37)
MIN
FULL THREAD
MASTER
KEY
4 MINOR KEYS
[ C
MAX
COUPLING NUT
[ A
MAX
INSERT
[ B
D ACCESSORY THREAD
3 ACCESSORY TEETH
EQUALLY SPACED
[ E
MAX
GROMMET
Shell
Size
⭋A⭋B⭋C D ⭋E
Accessory Thread
Maximum ±.003 ±.08 Maximum Class 2A Maximum
inch mm inch mm inch mm inch mm
8 .285 7.24 .355 9.02 .782 19.86 1/2-20UNF .305 7.75
10 .402 10.21 .483 12.27 .926 23.52 5/8-24UNEF .405 10.29
12 .516 13.11 .595 15.11 1.043 26.49 3/4-20UNEF .531 13.49
14 .641 16.28 .720 18.29 1.183 30.05 7/8-20UNEF .665 16.89
16 .766 19.46 .845 21.46 1.305 33.15 1-20UNEF .790 20.07
18 .855 21.72 .945 24.00 1.391 35.33 1-1/16-18UNEF .869 22.07
20 .980 24.89 1.070 27.18 1.531 38.89 1-3/16-18UNEF .994 25.25
22 1.105 28.07 1.195 30.35 1.656 42.06 1-5/16-18UNEF 1.119 28.42
24 1.229 31.22 1.320 33.53 1.777 45.14 1-7/16-18UNEF 1.244 31.60
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MIL–DTL– 26482 S 2
MS3475
RFI Grounding Plug
AE775
Bayonet Coupling, Crimp Removable, Rear Release
– –
Page 71 Completed Part Number
Page 80 Contacts, Sealing Plugs and Tools
Pages 84, 85 Insert Arrangements
Page 70 Performance Specifications
Pages 82, 83 Insert Availability and Contact Information
Page 82 Polarization
RFI STRIP
[ A
MAX
INSERT
[ B
[ C
MAX
COUPLING NUT
1.230(31.24)
MAX
BLUE COLOR BAND
.190 (4.83)
.130 (3.30)
GROMMET EXTENSION
[ E
MAX
GROMMET
.290
(7.37)
MIN
FULL THREAD
D ACCESSORY THREAD
MASTER
KEY
4 MINOR KEYS
3 ACCESSORY TEETH
EQUALLY SPACED
.320(8.13)
MIN
Shell
Size
⭋A⭋B⭋C D ⭋E
Accessory Thread
Maximum ±.003 ±.08 Maximum Class 2A Maximum
inch mm inch mm inch mm inch mm
8 .285 7.24 .355 9.02 .782 19.86 1/2-20UNF .305 7.75
10 .402 10.21 .483 12.27 .926 23.52 5/8-24UNEF .405 10.29
12 .516 13.11 .595 15.11 1.043 26.49 3/4-20UNEF .531 13.49
14 .641 16.28 .720 18.29 1.183 30.05 7/8-20UNEF .665 16.89
16 .766 19.46 .845 21.46 1.305 33.15 1-20UNEF .790 20.07
18 .855 21.72 .945 24.00 1.391 35.33 1-1/16-18UNEF .869 22.07
20 .980 24.89 1.070 27.18 1.531 38.89 1-3/16-18UNEF .994 25.25
22 1.105 28.07 1.195 30.35 1.656 42.06 1-5/16-18UNEF 1.119 28.42
24 1.229 31.22 1.320 33.53 1.777 45.14 1-7/16-18UNEF 1.244 31.60
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MIL–DTL– 26482 S 2
AC3475
Arctic Coupling Nut, RFI Plug
Bayonet Coupling, Crimp Removable, Rear Release
AC3475 – 10- 7PN
– –
Page 80 Contacts, Sealing Plugs and Tools
Pages 84, 85 Insert Arrangements
Page 70 Performance Specifications
Pages 82, 83 Insert Availability and Contact Information
Page 82 Polarization
Note: AC3475 Arctic Coupling Nut, RFI Plug is available
to Aero-Electric part number only. Mating part is AC3474
which is same as AE774 on page 75. Additional mates are
AC3470 (same as AE770 on page 72), AC3471 (same as
AE771 on page 73)and AC3472 (same as AE772 on page 74).
Shell
Size
⭋A⭋B⭋C D ⭋E
Accessory Thread
Maximum ±.003 ±.08 Maximum Class 2A Maximum
inch mm inch mm inch mm inch mm
8 .285 7.24 .355 9.02 .900 22.86 1/2-20UNF .305 7.75
10 .402 10.21 .483 12.27 1.010 25.65 5/8-24UNEF .405 10.29
12 .516 13.11 .595 15.11 1.180 29.97 3/4-20UNEF .531 13.49
14 .641 16.28 .720 18.29 1.310 33.27 7/8-20UNEF .665 16.89
16 .766 19.46 .845 21.46 1.510 38.35 1-20UNEF .790 20.07
18 .855 21.72 .945 24.00 1.620 41.15 1-1/16-18UNEF .869 22.07
20 .980 24.89 1.070 27.18 1.740 44.20 1-3/16-18UNEF .994 25.25
22 1.105 28.07 1.195 30.35 1.850 46.99 1-5/16-18UNEF 1.119 28.42
24 1.229 31.22 1.320 33.53 1.980 50.29 1-7/16-18UNEF 1.244 31.60
RFI STRIP
[ B
[ C
MAX
COUPLING NUT
1.230(31.24)
MAX
.190 (4.83)
.130 (3.30)
GROMMET EXTENSION
[ E
MAX
GROMMET
.290
(7.37)
MIN
FULL THREAD
D ACCESSORY THREAD
MASTER KEY
4 MINOR KEYS
3 ACCESSORY TEETH
EQUALLY SPACED
[ A
MAX
INSERT
Aero Prefix
Class (Material and Finish)
–= Aluminum shell, cadmium olive drab over nickel
Z= Aluminum shell, zinc nickel finish
Shell Size
8, 10, 12, 14, 16, 18, 20, 22 or 24
Polarization
N= Normal (N included in part number marking)
A, B, C, D, E or F(Alternate key positions)
and W, X, Y or Z(Alternate insert clocking positions)
Contact Style
P= Pin
S= Socket
Layout
See pages 82 thru 85
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MIL–DTL– 26482 S 2
MIL-DTL-26482 Series 2
Flange and Jam Nut Receptacles
Panel Cutouts
Panel Cutouts
– –
Flange and Jam Nut Mounting Dimensions
Note: For ⭋C and ⭋E, MS3470 and MS3472 call out for
tolerance of ±.010 (±.25), however we recommend ±.005 (±.13).
Shell
Size
⭋A B ⭋C D ⭋E F ⭋G
±.005 ±.13 (TP) ±.010 ±.25 (TP) ±.010 ±.25 ±.005 ±.13 ±.005 ±.13
inch mm inch mm inch mm inch mm inch mm inch mm inch mm
8 .568 14.43 .594 15.09 .120 3.05 .734 18.64 .150 3.81 .536 13.61 .572 14.53
10 .685 17.40 .719 18.26 .120 3.05 .812 20.62 .150 3.81 .661 16.79 .697 17.70
12 .864 21.95 .812 20.62 .120 3.05 .938 23.83 .150 3.81 .824 20.93 .895 22.73
14 .989 25.12 .906 23.01 .120 3.05 1.031 26.19 .150 3.81 .948 24.08 1.010 25.65
16 1.113 28.27 .969 24.61 .120 3.05 1.125 28.58 .150 3.81 1.072 27.23 1.135 28.83
18 1.238 31.45 1.062 26.97 .120 3.05 1.203 30.56 .150 3.81 1.197 30.40 1.260 32.00
20 1.363 34.62 1.156 29.36 .120 3.05 1.297 32.94 .150 3.81 1.322 33.58 1.385 35.18
22 1.488 37.80 1.250 31.75 .120 3.05 1.375 34.93 .150 3.81 1.447 36.75 1.510 38.35
24 1.615 41.02 1.375 34.93 .147 3.73 1.500 38.10 .150 3.81 1.572 39.93 1.635 41.53
B[ G
[ E
D
[ C[ A
F
[ A
MS3470(AE770) MS3474(AE774) MS3472(AE772)
80www.conesys.com sales@aero-electric.com
MIL–DTL– 26482 S 2
MIL-DTL-26482
Contacts, Tools and Seal Plugs
Series 2
Contacts, Plastic Insertion/Removal Tools and Seal Plugs
Crimping and Metal Insertion/Extraction Tools
Contact and Wire Data
Note: Test Current and Maximum Voltage Drop when
tested with silver-plated wire at 25°C.
* Size 20 contacts for 8–2, 8–3 and 8–4 layouts are only available to
Aero-Electric part numbers. Connectors incorporating these three
layouts are only sold to Aero-Electric callouts (AE770, AE771, AE772,
AE774, AE775, AE776, AC3470, AC3471, AC3472, AC3474 and AC3475).
Standard size 20 contacts M39029/4-110 and M39029/5-115 will not
work in these 3 layouts.
– –
Contact
Size
Application Pin Contacts Socket Contacts Seal Plugs Insertion/Removal Tools
Plastic
Type Military No. Military No. Military No. Military No.
20 Power/Signal M39029/4-110 M39029/5-115 MS27488-20-1 M81969/14-11
16 Power/Signal M39029/4-111 M39029/5-116 MS27488-16-1 M81969/14-03
12 Power/Signal M39029/4-113 M39029/5-118 MS27488-12-1 M81969/14-04
20* Power/Signal 5291-022-204H 5091-022-204H MS27488-20-1 M81969/39-01
Contact
Size
Crimp Tool Positioner Positioner Insertion Tool Extraction Tool
For Pin Contacts For Socket Contacts Metal Metal
Military No. Military No. Military No. Military No. Military No.
20 M22520/1-01 M22520/1-02 M22520/1-02 M81969/8-205 M81969/8-206
M22520/2-01 M22520/2-02 M22520/2-02
16 M22520/1-01 M22520/1-02 M22520/1-02 M81969/8-207 M81969/8-208
12 M22520/1-01 M22520/1-02 M22520/1-02 M81969/8-209 M81969/8-210
20* M22520/1-01 M22520/1-02 M22520/1-02 M81969/8-205 M81969/8-206
M22520/2-01 M22520/2-02 M22520/2-02
Contact
Size
Test Current Voltage Crimp Well Data Wire Range Finished Wire ⭋Range
DC Test Max. Drop Well Dia. Minimum Well Dept Minimum Maximum
Amps Millivolts inch inch mm AWG mm2inch mm inch mm
20 7.5 55 .049 ±.001 .155 3.94 24-20 .20-.52 .040 1.02 .083 2.11
16 13.0 49 .067 ±.001 .250 6.35 20-16 .52-1.31 .053 1.35 .103 2.62
12 23.0 42 .100 ±.002 .250 6.35 14-12 2.08-3.31 .097 2.46 .158 4.01
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MIL–DTL– 26482 S 2
MIL-DTL-26482
Contact Installation Instructions
Series 2
– –
Contact Installation
Instructions
Crimping Contacts
1. Select the appropriate crimp tool and ensure that the
proper crimp head positioner is used.
2. Cycle the tool to be sure the indentors are open.
3. Determine the correct selector setting for the wire size
from the data plate on the positioner (turret head
assembly) and set the selector knob on the crimp tool
to match.
4. Place the contact, mating end first, into the tool.
5. Insert the stripped wire into the hollow end of the contact.
Be sure the wire is inserted as far as it will go.
6. Close the tool completely to crimp. Unless the tool is
closed completely, the tool will not release the contact.
7. Remove the crimped contact from the tool. Check the
inspection hole to verify that the wire is fully inserted.
Insertion of Contacts
1. Before inserting the contacts, unscrew the accessories
(clamps, backshells or adapters) from rear of plug or
receptacle. Slide the hardware over the wire bundle in
the proper order for reassembly after all the contacts
are inserted.
2. To assist insertion of contacts, lubricate insulator
(grommet) cavities with isopropyl alcohol. Alcohol will
evaporate and will not leave a conductive film. Caution:
Never use any lubricant other than isopropyl alcohol.
3. Place the correct insertion tool on the contact so that the
wire runs along the groove in the tool. (Tool tip will butt
against the shoulder.) Hold the plug or receptacle body
firmly.
4. Beginning with a center cavity, insert the contact into
the insulator with a slow, even pressure until the contact
snaps into position. Make sure the contact and tool are
held perpendicular to the face of the insert during the
contact installation or the grommet could be damaged.
4.1 If contacts are not inserted all the way prior to
removing insertion tool, do not try to reinsert the
insertion tool. Instead, remove the contact and try
again; otherwise reinserting the insertion tool may
damage the inside of the contact cavity.
5. Remove tool and check the face of the connector for
proper contact installation. Proper installation may also
be checked by pulling back lightly on the wire to make
sure the contact is properly seated.
Completion
After all the cavities have been filled, slide the hardware back
into position on the connector and tighten.
Extraction of Contacts (Rework)
1. Slide the hardware back over the wire bundle.
2. Select the appropriate tool. Place the wire into the
extraction tool of the pin or socket.
3. Slowly slide the extraction tool down wire into the contact
cavities until the tool tip bottoms against the contact
shoulder, expanding the clip retaining tines. Hold the wire
firmly in the tool and pull the wired contact and tool
straight out of the rear of the insulator.
Size Pin Contact Socket Contact Basic Crimp Tool Pin Positioner Socket Positioner Insertion/Removal Tool
20 M39029/4-110 M39029/5-115 M22520/1-01 M22520/1-02 Red M22520/1-02 Red M81969/14-11
M22520/2-01 M22520/2-02 M22520/2-02
16 M39029/4-111 M39029/5-116 M22520/1-01 M22520/1-02 Blue M22520/1-02 Blue M81969/14-03
12 M39029/4-113 M39029/5-118 M22520/1-01 M22520/1-02 Yellow M22520/1-02 Yellow M81969/14-04
20* 5291-022-204H 5091-022-204H M22520/1-01 M22520/1-02 Red M22520/1-02 Red M81969/39-01
M22520/2-01 SK2/2** SK2/2**
* Aero-Electric proprietary size 20 contacts used in 8-2, 8-3 and 8-4 layouts only.
** Daniels Manufacturing part number.
82www.conesys.com sales@aero-electric.com
MIL–DTL– 26482 S 2
MIL-DTL-26482 Series 2
Polarization, Insert Availability & Contact Information
per MIL-STD-1669
Insert Availability, Contact Information and Clocking Positions
– –
Polarization (Insert Clocking)
1. In the normal insert clocking position (position N), the
insert centerline coincides with the centerline of the
master keyway (key) of the shell: L = 0°.
2. In the alternate clocking positions (W, X, Y and Z),
the pin insert (viewing from mating side) is rotated
clockwise relative to the centerline of the master
keyway (key) of the shell.
3. The socket insert is rotated counter-clockwise.
4. Plugs have keys; receptacles have keyways.
Note: Be careful with alternate positions. See table below for
position availability on layouts of interest.
* Not qualified to MIL-DTL-26482 Series 2. These layouts were designed
to mate with solder Series 1 connectors using proprietary Aero-Electric
contacts (not QPL’d to M39029) and to avoid confusion are sold only
“with contacts”.
** Non MIL-STD-1669 layouts, available to Aero-Electric part numbers
only and utilize standard M39029 contacts. These layouts were
originally designed for use in AC3475 Arctic Coupling RFI plugs and
AC3474 jam nut receptacles.
Insert
Arrangement
Aero-Electric Total Contact Quantity Service Insert Positions
Status No. of By Size In Degrees
QPL'd Tooled Contacts 20 16 12 Rating N W X Y Z
8-2* No Yes 2 2 I 0 58 122 — —
8-3* No Yes 3 3 I 0 60 210 — —
8-4* No Yes 4 4 I 0 45 — — —
8-33 Yes Yes 3 3 I 0 90 — — —
8-98 Yes Yes 3 3 I 0 — — — —
10-6 Yes Yes 6 6 I 0 90 — — —
10-7** N/A Yes 7 7 I 0 90 — — —
12-3 Yes Yes 3 3 II 0 — — 180 —
12-8 Yes Yes 8 8 I 0 90 112 203 292
12-10 Yes Yes 10 10 I 0 60 155 270 295
14-2** N/A Yes 2 2 I 0 — — — —
14-4 Yes Yes 4 4 I 0 45 — — —
14-5 Yes Yes 5 5 II 0 40 92 184 273
14-9 Yes Yes 9 5 4 I 0 15 90 180 240
14-12 Yes Yes 12 8 4 I 0 43 90 — —
14-15 Yes Yes 15 14 1 I 0 17 110 155 234
14-18 Yes Yes 18 18 I 0 15 90 180 270
14-19 Yes Yes 19 19 I 0 30 165 315 —
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MIL–DTL– 26482 S 2
MIL-DTL-26482 Series 2
Polarization, Insert Availability & Contact Information
per MIL-STD-1669
Insert Availability, Contact Information and Clocking Positions
– –
Insert
Arrangement
Aero-Electric Total Contact Quantity Service Insert Positions
Status No. of By Size In Degrees
QPL'd Tooled Contacts 20 16 12 Rating N W X Y Z
16-8 Yes Yes 8 8 II 0 54 152 180 331
16-14 Yes Yes 14 8 6 I 0 25 78 180 240
16-23 Yes Yes 23 22 1 I 0 158 270 — —
16-26 Yes Yes 26 26 I 0 60 — 275 338
18-8 Yes Yes 8 8 I 0 180 — — —
18-11 Yes Yes 11 11 II 0 62 119 241 340
18-30 Yes Yes 30 29 1 I 0 180 193 285 350
18-32 Yes Yes 32 32 I 0 85 138 222 265
20-16 Yes Yes 16 16 II 0 238 318 333 347
20-24 Yes Yes 24 24 I 0 70 145 215 290
20-39 Yes Yes 39 37 2 I 0 63 144 252 333
20-41 Yes Yes 41 41 I 0 45 126 225 —
22-12 Yes Yes 12 12 I 0 — — — —
22-21 Yes Yes 21 21 II 0 16 135 175 349
22-41 Yes Yes 41 27 14 I 0 39 135 264 —
22-55 Yes Yes 55 55 I 0 30 142 226 314
22-95 Yes Yes 32 26 6 I 0 26 180 266 —
24-19 Yes No 19 19 II 0 30 165 315 —
24-31 Yes Yes 31 31 I 0 90 225 255 —
24-61 Yes Yes 61 61 I 0 90 180 270 324
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MIL–DTL– 26482 S 2
MIL-STD-1669
Insert Arrangements (Pin Front View)
for MIL-DTL-26482 Series 2 Connectors
Insert Arrangement Views
– –
* Not on QPL, available to Aero-Electric part number only. ** Non MIL-STD-1669 layout, available in AC3470 through AC3475 shell
styles only.
A
B
C
AB A
BC
DA
B
C
A
B
CA
B
C
D
E
F
A
B
G
C
D
E
FA
B
C
A
HB
C
D
E
F
G
AB
C
D
E
F
G
H
J
K
A
B
C
D
A
B
C
D
E
A
B
C
D
E
F
G
H
J
A
B
C
D
E
F
G
M
H
J
K
L
A
B
RC
D
E
F
G
H
J
K
L
M
N
P
A
B
C
D
E
F
G
H
J
K
L
MN
P
R
S
TU
AB
C
D
E
F
G
H
J
K
L
M
NP
R
S
T
UV
A
B
C
D
E
F
G
H
A
B
C
D
E
F
G
H
J
K
L
M
NP
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
S
T
U
V
W
X
Y
Z
AB
C
D
E
F
G
H
J
K
L
M
N
P
R
ST
U
V
W
X
Y
Z
ab
c
A
B
C
D
E
F
G
H
A
B
C
D
E
G
H
J
K
L
F
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
S
T
U
V
W
X
Y
Z
a
b
c
d
e
f
g
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
S
T
U
V
W
X
Y
Z
a
b
c
d
e
f
g
h
J
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
S
8-3*
3 # 20, I
8-2*
2 # 20, I
8-4*
4 # 20, I
8-33
3 # 20, I
8-98
3 # 20, I
10-6
6 # 20, I
10-7**
7 # 20, I
12-3
3 # 16, II
12-8
8 # 20, I
12-10
10 # 20, I
14-4
4 # 12, I
14-5
5 # 16, II
14-9
5 # 20, 4 # 12, I
14-12
4 # 16, 8 # 20, I
14-15
1 # 16, 14 # 20, I
14-18
18 # 20, I
14-19
19 # 20, I
16-8
8 # 16, II
16-14
8 # 20, 6 # 12, I
16-23
1 # 16, 22 # 20, I
16-26
26 # 20, I
18-8
8 # 12, I
18-11
11 # 16, II
20-16
16 # 16, II
18-32
32 # 20, I
18-30
1 # 16, 29 # 20, I
A
B
14-2**
2 # 12, I
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MIL–DTL– 26482 S 2
MIL-STD-1669
Insert Arrangements (Pin Front View)
for MIL-DTL-26482 Series 2 Connectors
Insert Arrangement Views
– –
A
B
C
D
E
F
G
H
J
K
LM
N
P
R
ST
U
V
WX
Y
Z
a
20-24
24 # 20, I
AB
C
D
E
F
G
H
J
K
L
M
N
P
R
S
T
U
VW
XY
Z
a
b
c
d
e
f
g
h
J
k
m
n
P
r
i
q
20-39
2 # 16, 37 # 20, I
20-41
41 # 20, I
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
S
T
U
V
W
X
22-21
21 # 16, II
A
B
C
D
E
F
G
H
J
K
L
M
22-12
12 # 12, I
a
b
c
d
e
f
g
H
j
k
m
n
P
r
s
t
A
B
C
D
E
F
G
H
J
K
L
M
N
R
S
T
U
V
W
X
Y
Z
P
i
q
22-41
14 # 16, 27 # 20, I
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
S
T
UV
W
X
Y
Zl
a
b
c
d
e
f
g
h
k
m
n
p
r
s
t
u
v
w
x
y
z
i
q
AA
BB
CC
DD
EE
FF
GG
HH
22-55
55 # 20, I
AB
C
D
E
F
G
H
J
K
L
M
N
P
R
S
T
U
V
W
X
YZ
a
b
c
d
e
f
g
h
i
22-95
6 # 12, 26 # 20, I
AB
C
D
E
F
G
H
J
K
L
M
NP
R
S
T
UV
24-19
19 # 12, II
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
S
T
U
V
W
X
Y
Z
a
b
c
d
e
f
g
Q
24-31
31 # 16, I
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
S
T
U
V
W
X
YZ
AA
BB
CC
DD
EE
FF
GG
HH
JJ
LL
KK
MM
NN
PP
abc
d
e
f
g
h
j
k
m
n
p
r
s
t
u
v
w
x
y
z
i
q
24-61
61 # 20, I
AB
C
D
E
F
G
H
J
K
L
M
N
P
R
S
T
U
V
W
XY
Z
a
b
c
d
e
f
g
h
j
k
m
n
p
r
s
i
q
t