MS-E/F/R/ER
MIL-C-5015 Connectors
ITT Cannon is the foremost manufacturer of MS and
MS type connectors with the widest range of connec-
tor styles, sizes and variations in the industry. These
connectors utilize the finest materials, which, along
with precision manufacturing and rigid quality con-
trol, assure ITT Cannon customers of the finest qual-
ity connectors.
These circular connectors were originally designed
for aircraft, but are now widely used in many other
fields. They are particularly suitable for commercial
applications requiring low cost and high reliability
.
ENVIRONMENTAL RESISTANT MS-E, MS-F, MS-R,
AND F80 (Solder/Crimp Termination)
MS-E, MS-F and MS-R are similar to MS-A and MS-B
connectors but have resilient insulators and wire
sealing grommets for extreme environmental condi-
tions and high altitude sealing. MS-E’s and MS-F’s
have a mechanical cable clamp; the MS-R has a
shorter, lighter weight endbell without the cable
clamp. Both the MS-F and MS-R have O rings to sup-
plement the interfacial seal. Shells are aluminum
alloy. Contacts are silver plated copper alloy. The F80
modification (crimp contact termination) is available
in E, R, F and BFR styles with resilient insulators
.
POTTING ER CONNEC-
TORS (Solder Contact
Termination)
These Lightweight pot-
ting connectors provide
resistance to salt water,
fuels, etc., and will with-
stand the effects of high
vibration. 3100 and 3106
connectors with plastic
potting cups and resilient inserts meet the requirements of
MS3103 and MS25183. Contacts are silver plated copper or
brass. ER insulators are resilient; shells are aluminum alloy.
A 90º plug (3108ER) is also available.
A
Circular
ACCESSORIES
Accessories to fit fit MS
connectors
include
junction shells, protec-
tive caps, dummy or
stowage receptacles,
cable clamps, telescop-
ing bushings.
How to Order
In the latest revision of MIL-C-5015, a new
class of environment-resistant connectors
was added. This new class F connector super-
sedes the previous class E connector. The
MS3106F has an O ring under the coupling
nut. The class E will be available upon request
for existing programs, and upon ordering will
also bear the E nomenclature on the shell.
MS-F and MS-R connectors are designed to
operate in the extreme environmental condi-
tions of high altitude flight and must be com-
pletely sealed to withstand moisture, conden-
sation, vibration, corona and flashover
caused by high altitude environments. They
have resilient grommet with internal restric-
tions in the wire cavities which act as O rings
around the wires. This allows the wires to
slide thru the grommet with a minimum of
friction, yet when the ferrule is seated and
the endbell tightened it provides a perfect
wire seal thru a wide variety of wire diame-
ters. This seal at the rear, plus the interfacial
seal at the front, effects a completely environ-
ment-resistant assembly when the plug is
mated to and F or R receptacle. Sockets are of
the closed-entry type.
The temperature range for this connector is -
55ºC (67ºF) to +125º (+257ºF) and meets
the requirements of MIL-C-5015.
The F80 modification (crimp contact termina-
tion) is available in resilient insulators in the
E, R, F, and BFR styles, creating a large selec-
tion of insert assemblies and hardware.
Components are identical to the MS-5015
except that the contacts are modified for
crimp termination providing and inexpensive
crimp contact connector with the proven reli-
ability of and complete intermateability with
the MS-5015 series. Cable clamps have been
integrally designed with the endbell on MS-E
and MS-F connectors. Class R is without the
cable clamp
.
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
MS 3106
CA 3106
PREFIX
SHELL STYLE
CLASS
SHELL SIZE
CONTACT ARRANGEMENT
CONTACT TYPE
ALTERNATE INSERT POSITION
MODIFICATION CODE
PREFIX
MS - Conforms to latest MIL-C-5015
revision.
CA - Cannon designation (for any
modification)
CAR - RoHS compliant
SHELL STYLE
3100 - Wall mounting receptacle
3101 - Cable connecting plug
3102 - Box mounting receptacle
3106 - Straight plug
3108 - 90º angle plug
CLASS
E - with resilient insulator and integral
clamp for cable strain relief
F - same as E, however style 3106 with
O-ring seal under the coupling nut
* When ordering MS3106F to the
Cannon part number, designate CA06R.
R
F
18
18
-
-
1
1
P
S
W
-
*
F80*
SHELL SIZE
10S, 12S, 14S, 16S, 16, 18, 20, 22, 24, 28, 32 and 36.
CONTACT ARRANGEMENTS
See pages A-85 to A-89
CONTACT TYPE
P - Pin
S - Socket
ALTERNATE INSERT POSITION
W, X, Y and Z (omit for “Normal), see page A-89
MODIFICATION CODE
A71 - Electroless Nickel Hardware, RoHS
A176 - Contacts hard gold over nickel, RoHS
A206 - Black zinc cobalt hardware, RoHS
F42 - Connector supplied without endbell, grommet and ferrule
F80 - Snap-in crimp contacts
F183 - Snap-in crimp contacts for metric conductors
DN - CA3106 (plug only), endbell for shrink boot adapter
A232 - Black zinc cobalt hardware,
RoHS European version
A233 - Green zinc cobalt hardware,
European version
www.ittcannon.com
A-83
MIL-DTL-5015
MS-E/F/R
Performance and Material Specifications
MATERIALS AND FINISHES
THERMOCOUPLE CONTACTS
Aluminum Alloy
O.D. Chromate coating
over cadmium plating
Polychloroprene (resilient)
Brass or copper alloy
Silver plate
Tinned solder pot
SIzes 12 and 16 contacts, machined from matching thermocouple lead wire alloys, can be supplied in ITT Cannon
connectors. These thermocouple contacts maintain continuity from thermal-sensor leads through a bulkhead of
other closures in temperature measuring applications.
These contacts for matching lead wires are detailed by the standards of the Instrument Society of America (ISA).
ISA Standards
J and Y
K
T
Material
Iron and constantan
Chromel and alumel
Copper and constantan
A
Shell
Material
Finish
Material
Material
Finish
Termination
Circular
Insulator
Contacts
WIRING
For class E, F, and R connectors, satisfactory moisture sealing
will be obtained if AWG and MS wire sizes and insulation
outside diameters are governed by this table.
Contact
Size
16
12
8
4
0
max.
Wire Size
(MIL-W-5086)
16 thru 20
12 thru 14
8 thru 10
4 thru 6
0 thru 2
Insulation OD Limit
(inches)
.064 (1.63) min. to .130 (3.30) max.
.114 (2.90) min. to .170 (4.32) max.
.164 (4.17) min. to .255 (6.48) max.
.275 (6.98) min. to .370 (9.40) max.
.415 (10.54) min to .550 (13.97)
Since the thermocouple connector applications determines the soldering methods and materials to be used, ther-
mocouple contacts, identified by permanent markings, are normally supplied with untinned solder pots.
Thermocouple contacts are supplied only in connectors having resilient insulators.
HIGH POTENTIAL TEST VOLTAGE
MS connectors show no evidence of breakdown when the test voltage given below is applied between the two
closest contacts and between the shell and the contacts closest to the shell for a period of one minute.
MS
Service
Rating
Inst.
A
D
E
B
C
Test
Voltage
(RMS)
60 cps
1000
2000
2800
3500
4500
7000
Suggested*
Operating Voltages
DC
AC (rms)
250
700
1250
1750
2450
4200
200
500
900
1250
1750
3000
Air
Spacing
Nom.
(inches)
1/16
1/8
3/16
1/4
5/16
Creepage
Distance
Nom.
(inches)
1/16
1/8
3/16
1/4
5/16
1
ELECTRICAL SERVICE DATA
Test current ratings of contacts and allowable voltage drop
under test conditions when assembled as in service are shown
below. Maximum total current to be carried per connector is the
same as the allowable in wire bundles as specified in MIL-W-
5088.
Contact
Size
16
12
8
4
0
Test Current
(amps)
13
23
46
80
150
Potential Drop
(millivolts)
49
42
26
23
21
*As indicated in previous MS specification and to be used by designer only as a guide.
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
A-84
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