MIL-PRF-39012/26H
w/AMENDMENT 2
21 November 2016
SUPERSEDING
MIL-PRF-39012/26H
w/AMENDMENT 1
1 March 2011
PERFORMANCE SPECIFICATION SHEET
CONNECTORS, PLUGS, ELECTRICAL, COAXIAL RADIO FREQUENCY,
(SERIES TNC (CABLED), PIN CONTACT, CLASS 2)
This specification is approved for use by all Departments
and Agencies of the Department of Defense.
The requirements for acquiring the product described herein shall
consist of this specification sheet and MIL-PRF-39012.
NOTES:
1. Dimensions are in inches and metric equivalents are given for information only.
2. For dimension A, see tables I and III.
3. Wrench flats are to accommodate standard wrench opening in acc ordanc e wit h F ED-STD-H28.
4. All undimensioned pictorial representations are for reference purposes only.
5. Dimension A defines the maximum length of the connector when assembled to the appropriate
cable.
6. Series TNC, pin contact interface in accordance with MIL-STD-348.
7. Three holes .027 (0.69 mm) minimum diameter equally spaced for safety wiring. Location on
coupling nut optional.
FIGURE 1. General configuration.
AMSC N/A FSC 5935
INCH-POUND
MIL-PRF-39012/26H
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NOTES:
1. Dimens ions are in inches and metric equivalents are given for information only.
2. Three holes .027 (0.69 mm) minimum diameter equally spaced for safety wiring. Location on
coupling nut optional.
3. Chamfer is optional.
4. All undimensioned pictorial configurations are for reference purposes only.
FIGURE 2. Category D captivation detail.
Inches
mm
.002
0.05
.010
0.25
.015
0.38
.036
0.91
.077
1.96
.267
6.78
MIL-PRF-39012/26H
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TABLE I. Dash numbers, cross reference, and dimensions.
Part or Identifying
Number (PIN) 1/
M39012/26-
Applicable cable 2/
M17/ Dimensions Inches (millimeters)
maximum #
Categor y A – Field serviceable (no special tools required) 3/
X101
Cable group VI 6/
60-RG142 4/
128-RG400 5/
A
1.250 (31.75)
X102
Cable group VII 6/
110-RG302 4/ 5/
X103
Cable group IV 6/
54-RG122 5/
X018
Cable group II 6/
113-RG316 4/ 5/
X225
Cable group X 6/
127-RG393 4/ 5/
A
1.739 (44.17)
0030
220-00001
A
1.250
(31.75)
0130
220-00002 13/
0031
221-00001
0131
221-00002 13/
0032
222-00001
0132
222-00002 13/
0033
223-00001
0133
223-00002 13/
0034
224-00001
0134
224-00002 13/
0035
225-00001
0135
225-00002 13/
See notes at end of table.
MIL-PRF-39012/26H
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TABLE I. Dash numbers, cross reference, and dimensions – Continued.
PIN 1/
M39012/26-
Applicable cable 2/
M17/
Dimensions
Inches (millimeters)
max imum #
Categor y C – field replaceable (MIL-DTL-22520 crimp tool)
See note next to applicable cable for crimp die 3/ 7/
X010
Cable group VIA 6/ 8/
111-RG305 4/ 5/
A
1.500 (38.10)
X011
Cable group VIB 6/ 8/
60-RG142 4/
128-RG400 5/
X012
Cable group VIIA 6/ 9/
110-RG302 4/ 5/
X013
Cable group IV 6/ 10/
54-RG122 5/
X014
Cable group VIIB 6/ 9/
90-RG71 5/
X022
Cable group IIA 6/ 11/
113-RG316 4/ 5/
X023
Cable group V 6/ 10/
95-RG180 5/
See notes at end of table.
MIL-PRF-39012/26H
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TABLE I. Dash numbers, cross reference, and dimensions – Continued.
PIN 1/
M39012/26-
Applicable cable 2/
M17/
Dimensions
Inches (millimeters)
max imum #
Categor y D – Field replaceable – Defined piece part 3/ 7/ 12/
X501
Cable group IV 6/
54-RG122 5/
A
1.187 (30.16)
X502
Cable group V 6/
95-RG180 4/ 5/
X503
Cable group VIB 6/
60-RG142 4/
128-RG400 5/
X504
Cable group VIA 6/
111-RG303 4/ 5/
1/ For cross-reference of dash number to superseded PIN or designation, see table IV.
2/ The latest version of each cable shall be applicable.
3/ These connectors have captivated center contacts.
4/ Cable to be used for the +200°C temperature cycling tests. This cable can be used for tests with the
approval of the Qualifying Activity.
5/ Cable to be used when performing test requiring cable except as in 5/ and 7/.
6/ Cables that are not 50-ohm cables in this cable group , when attached to the specified connectors,
VSWR, RF, leakage and insertion loss are not app lica ble.
7/ These connectors are assembled using the applicable crimp tool, to the specified cables stripped as
shown on figure 4.
8/ M22520/5-19 closure B or M22520/5-05 closure A. M22520/5-11 closure A. M22520/5-57 closure A.
9/ M22520/5-19 closure A or M22520/5-07 closure A. M22520/5-13 closure A. M22520/5-59 closure A.
10/ M22520/5-41 closure B or M22520/5-05 closure B. M22520/5-09 closure A.
11/ M22520/5-35 closure B or M22520/5-03 closure A.
12/ Complete connector assembly shall consist of a body, center contact, ferrule and assembly
instructions.
13/ Armored cable.
# Dimens ions are in inches. Metr ic equ iv ale nts are gi ve n for information onl y.
X Denotes connector body plating material option. The only plating options allowable are Silver or
Nickel over brass in accordance with MIL-PRF-39012. Only connectors of the same materials shall
be mated to avoid dissimilar metal problems. CAUTION: A NICKEL PLATED BODY IS NOT FOR
USE IN APPLICATIONS WHERE PASSIVE INTERMODULATION GENERATION (PIM) MAY BE A
CONCERN. Silver is the preferred plating.
MIL-PRF-39012/26H
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Dash number Ferrule
number 1/ A
± 0.003 B
± 0.003 Basic crimp
tool 2/
Crimp die
or positioner
M22520/5
X501
X502 26-50 0.212 0.175
M22520/5-01
05 or 41
Closure B
or
9 Closure A
X503
26-51
0.250
0.220
05, 11, 57
Closure A
or
19 Closure B
X504 26-52 0.245 0.206
1/ Contact numbers and ferrule numbers are for identification only.
2/ Class 2 tool may be used by OEM (see MIL-DTL-22520).
FIGURE 3. Contact and ferrule dimensions for category D only.
MIL-PRF-39012/26H
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Inches
mm
Inches
mm
Inches
mm
Inches
mm
.001
,002
.003
.005
.015
.017
0.03
0.05
0.08
0.13
0.38
0.43
.033
.035
.040
.043
.067
.083
0.84
0.89
1.02
1.09
1.70
2.11
.145
.175
.183
.206
.210
.212
3.68
4.45
4.65
5.23
5.33
5.38
.220
.230
.235
.245
.250
.478
.500
5.59
5.84
5.97
6.22
6.35
12.14
12.70
FIGURE 3. Contact and ferrule dimensions for category D only - Continued.
MIL-PRF-39012/26H
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Dash
no. Contact no.
1/
A
+.001
-.002 B Basic crimp
tool 2/ Crimp die or
positioner
Crimp
tensile
min.
(N)
Color
band
Color band
X501 26 – 12 .033
.500
.005 +.003
-.000
x 45°
M22520/1-01 M22520/1-12
10 lbs
(44.48) Orn
Yellow
X502 26 – 11 .017
.500
.005 +.003
.- 000
x 30°
6 lbs
(26.69) Blue
X503
X504 26 – 10 .043
.500
.005 +.003
-.000
x 45°
M22520/1-01 M22520/1-12 20 lbs
(88.96) Red
1/ Contact numbers and ferrule numbers are for identification only.
2/ Class 2 tool may be used by OEM (see MIL-DTL-22520).
NOTES:
1. Dimens ions are in inches . Metric equivalents are given for information only.
2. Crimp tensile test shall be in accordance with SAE-AS39029.
3. Copyright notice: ALL information disclosed in these specification sheets which is or may be copyright
is reproduced herein with the express permission of the copyright owner.
4. .003 inch maximum break.
5. Color bands shall be positioned so that no coloring material enters the inspection hole.
FIGURE 3. Contact and ferrule dimensions for category D only – Continued.
NOTES:
1. Dimensions are in inches. Metric equivalents are given for information
only.
FIGURE 4. Cable stripping dimensions for field replaceable connectors.
Inches
mm
.146
3.71
.166
4.22
.333
8.46
.353
8.97
.427
10.85
.447
11.35
.593
15.06
MIL-PRF-39012/26H
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ENGINEERING DATA:
Nominal impedance: 50 ohms.
Frequency range: 0 to 11 GHz.
Voltage rating:
500 volts rms, maximum working voltage at see level.
125 volts rms, maximum at 70,000 feet (4.437 kPa).
Temperature rating; -65°C to +165°C.
REQUIREMENTS:
Design and configurations: See figures 1, 2, 3, and 4.
Force to engage and disengage:
Longitudinal force: Not applicable.
Torque: 2 inch-pounds (.22 Nm), maximum.
Coupling proof torque: 15 inch-pounds (Nm 1.69)
Inspection conditions:
Coupling torque: 4 – 6 inch -pounds ((0.51 Nm to 0.67 Nm).
Mating characteristics;
In accordance with MIL-STD-348 and figure 2.
Outer contact:
Test ring ID: .319 inch (8.10 mm) maximum, 16 microinch (0.406 µm) finish.
Insertion force: 5 pounds (2 2.24 N) , maximum when inserted a minimum of .093 inch (2.36 mm).
Contacts with slotted members: Shall contact a .324 inch (8.23 mm), minimum diameter ring within
.031 inch (0.79 mm) of their tip ends.
Hermetic seal: Not applicable.
Leakage (pressurized connectors): Not applicable.
Insulation resistance: MIL-STD-202-302, test condition B, 5,000 megohms, minimum.
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`
Center contact retention: 6 pounds (26.69 N) minimum axial force. Applicable to captivated-center-
contact connectors only.
Corrosion (salt spray): MIL-STD-202-101, test condition B.
Voltage standing wave ratio (VSWR): From .5 to 11 GHz, or approximately 80 percent of upper cutoff
frequency of the cable, whichever is lower; 1.30, maximum.
Swept frequency VSWR test setup:
Item 6: VSWR shall be less than 1.02 + .003 F (F in GHz).
Item 16: VSVR shall be less than 1.02 + .003 F (F in GHz).
Second step of VSWR checkout procedure: VSWR shall be less then 1.06 + .007 F (F in GHz).
Group B inspection; VSWR shall be less than 1.05 +.005 F (F in GHz}.
Qualification and group C inspection: VSWR shall not exceed 1.10.
Connector durability: 500 cycles minimum, at 12 cycles per minute, maximum. The connector shall
meet the mating characteristics and force to engage and disengage requirements.
Contact resistance: In milliohms, maximum:
Initial After environment
Center contact 1.5 2.0
Outer contact (silver) .2 Not appl icabl e
Outer contact (nickel) .4 Not appl icabl e
Braid to body .1 Not appl icabl e
Dielectric withs ta ndi ng volt age: MIL-STD-202-301, 1,500 volts rms, minimum at sea level.
Vibration, high frequency: MlL-STD-202-204, test condition B.
Shock: MIL-STD-202-213, test condition I.
Thermal shock: MIL-STD-202-107, test condition B, except test high temperature shall be
+85°C. High temperature shall be at +200°C for connectors using +200’C cables (see tables I and III).
Moisture resistance: MIL-STD-202-106. No measurements at high humidity. Insulation
resistance shall be at least 200 megohms within 5 minutes after removal from humidity.
Corona Leve l:
Voltage: 375 vo lts rms, mi n imu m.
Altitude: 70,000 feet (4.437 kPa).
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RF high potential withstanding voltage:
Voltage and frequency: 1,000 volts rms at a frequency from 5 to 7.5 MHz.
Leakage current: Not applicable
Cable retention force:
Noncrimp assemblies: 40 poun ds (177 .93 N ), minimum.
Crimp assemblies:
10 pounds (44.48 N), minimum for cables .155 - .189 inch (3.94 mm – 4.80 mm) OD.
20 pounds (88.96 N), minimum for cables .190 - .229 inch (4.83 mm – 5.82 mm) OD.
30 pounds (133.45 N), minimum for cables .230 -.249 inch (5.84 mm – 6.32 mm) OD.
40 pounds (177.93 N), minimum for cables .250 inch (6.35 mm) OD and larger.
Coupling mechanism retention force: 1 00 pou nds 444.82 N), minimum.
RF Leakage: -60 dB minimum, tested at a frequency between 2 and 3 GHz.
Insertion loss:
.18 dB maximum tested at 9 GHz.
.06 F (GHz) dB max tested at 3 GHZ to 6 GHz.
PIN: M39012/26 (dash number from table I or “B” number from table III).
Group qualification: See table II.
MIL-PRF-39012/26H
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TABLE II. Group qualification. 1/
Group
Submission and qua lif icat ion of any of
the following con nect ors 2/
Qualifies the foll owing
connectors
I
M39012/26
-X101
-X103
-X118
M39012/26
-X101
-X102
-X103
-X118
-X225
II
-X002
-X017
-X102
-X017
III
B0005
B0006
B0008
B0015
B0016
B0020
B0005
B0006
B0007
B0008
B0009
B0015
B0016
B0019
B0020
IV
B0007
B0009
B0019
B0007
B0009
B0019
V
-X010
-X011
-X013
-X022
-X023
-X010
-X011
-X012
-X013
-X014
-X021
-X022
-X023
VI
-X012
-X017
-X021
-X012
-X014
-X021
VII
-X501
-X503
-X504
-X501
-X502
-X503
-X504
VIII
-X502
-X502
1/ If a connector manufacturer produces a connector which meets all the requirements for two or more
connector PINs (within the same series), the manufacturer may receive qualification approval for two or
more connector PINs qualifying the one connector. It is not necessary that such connectors be in the
same group. Each connector, however, must be marked with its own appropriate PIN. For grou p
qualification, the connectors must be of similar design and be of the same materials and plating.
2/ For qualification retention, where more then one part is listed in a group in this column, data may be
supplied on any of those parts in order to retain qualification for those parts in the corresponding right
hand column. The part does not necessarily have to be the part initi all y qual if ied.
MIL-PRF-39012/26H
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TABLE III. Categ ory B – nonfield replaceable (special tools may be required).
.
Dash number
1/ 2/ 3/
Applicable
cable M17/
4/
Dimensions
Inches
(millimeters)
maximum 5/
M39012/26B0005
28-RG058*
A
1.500 (38.10)
M39012/26B0006
60-RG142*@
128-RG400
M39012/26B0007
29-RG59*^
30-RG062 ^
97-RG210 ^
M39012/26B0008
54-RG122*
M39012/26B0009
90-RG71*^
M39012/26B0015
111-RG303*@
M39012/26B0016
84-RG223 *
M39012/26B0019
110-RG302 *@ ^
M39012/26B0020
113-RG316* @
119-RG174
1/ For cross-reference of dash number to superseded PIN or type designation, see table IV.
2/ For maintenance replacements for category B, see table V.
3/ Inactive for new design.
4/ The latest version of each cable shall be applicable.
5/ Dimensions are in inches. Metric equivalents are given for information only.
* Cable to be used when performing tests requiring cable except as in notes @ and ^.
@ Cable to be used for the +200°C temperature cycling tests. This cable can be used for tests with
the approval of the Qualifying Activity.
^ These are not 50 ohm cables; therefore, when attached to the specified connectors, VSWR, RF
leakage, and Insertion loss are not applicable.
Not for Air Force, Army, or Navy use. For OEM use only.
MIL-PRF-39012/26H
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TABLE IV. Superses s ion d ata. 1/ 2/
Preferred PIN
M39012/26
Superseded PINs
or superseded type designation
-0010
M23329/4-01, M2332 9/4-03
-0011
M23329/4-02, M2332 9/4-04
-0012
M23329/4-05, M3901 2/26-0221
-0023
M23329/4-06
-0101
M39012/26-0001, M3 901 2/ 26-0104,
M39012/26-0004
-0102
M39012/26-0002, M3 901 2/ 26-0117,
M39012/26-0004
-0103
M39012/26-0003
B0005
M39012/26-0005
B0006
M39012/26-0006
B0007
M39012/26-0007
B0008
M39012/26-0008
B0009
M39012/26-0009
B0015
M39012/26-0015
B0016
M39012/26-0016
B0019
M39012/26-0019
B0020
M39012/26-0020
1/ The superseded PIN or the type designation is for reference only. Where a superseded PIN or type
designation is not given, none was assigned or will be assigned. The PIN M39012/26-XXXX shall be used
in all cases for marking and identifying the connector.
2/ The basic type designation includes all letter versions of the specified number, e.g. UG-18/U includes
UG-18 A/U, UG-18 B/U, etc.
TABLE V. Maintenance replacements for category B.
Category B number*
Inactive for new
design
Category C
dash number
Category A
dash number
Category D
dash
number
B0005
B0006
B0007
B0008
B0009
B0015
B0016
B0019
B0020
0010
0011
0012
0013
0014
0010
0011
0021
0022
0101
0101
0102
0103
0102
---
0101
---
0018
0504
0503
---
0501
---
---
---
---
---
* Category B connectors are for original installation only. They will not be stocked or acquired
by the Government.
MIL-PRF-39012/26H
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Amendment notations. The margins of this specification are marked with vertical lines to indicate
modifications generated by this amendment. This was done as a convenience only and the
Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and
contractors are cautioned to evaluate the requirements of this document based on the entire content
irrespective of the marginal notations.
Referenced documents. In addition to MIL-PRF-39012, this document references the following:
FED-STD-H28
MIL-STD-202-101
MIL-STD-202-106
MIL-STD-202-107
MIL-STD-202-204
MIL-STD-202-213
MIL-STD-202-301
MIL-STD-202-302
MIL-STD-348
MIL-DTL-22520
SAE-AS39029
CONCLUDING MATERIAL
Custodians: Preparing activity:
Army - CR DLA - CC
Navy - EC
Air Force – 85
NASA – NA
DLA – CC (Project 5935-2016-204)
Revie w ac t i vit ies :
Army - AR, AT, EA, MI
Navy - AS, MC, OS, SH
Air Force - 19, 99
NOTE: The activities listed above were interested in this document as of the date of this document.
Since organizations and responsibilities can change, you should verify the currency of the information
above using the ASSIST Online database at https://assist.dla.mil.
