MIL-PRF-39012/26H
w/AMENDMENT 1
1 March 2011
SUPERSEDING
MIL-PRF-39012/26H
4 May 2010
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.
2. Metric equivalents are given for information only.
3. For dimension A, see tables I and III.
4. Wrench flats are to accommodate sta ndard wrench opening in accordance with FED-STD-H28,
appendix 10.
5. All undimensioned pictorial representations are for reference purposes only.
6. Dimension A defines the maximum length of the connector when assembled to the appropriate
cable.
7. Series TNC, pin contact interface in accordance with MIL-STD-348.
8. 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. Dimensions are in inches.
2. Metric equivalents are given for inform ation only.
3. Three holes .027 (0.69 mm) minimum diameter equally spaced for safety wiring. Location on
coupling nut optional.
4. Chamfer is optional.
5. 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 refe rence, and dimensions.
Part or Identifying
Number (PIN) 1/
M39012/26-
Applicable cable 2/
M17/ Dimensions Inches (millimeters)
maximum #
Category A – Field serviceable (no sp ecial 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 14/
0031 221-00001
0131 221-00002 14/
0032 222-00001
0132 222-00002 14/
0033 223-00001
0133 223-00002 14/
0034 224-00001
0134 224-00002 14/
0035 225-00001
0135 225-00002 14/
See notes at end of table.
MIL-PRF-39012/26H
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TABLE I. Dash numbers, cross refe rence, and dimensions – Continued.
PIN 1/
M39012/26- Applicable cable 2/
M17/ Dimensions Inches (millimeters)
maximum #
Category 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 refe rence, and dimensions – Continued.
PIN 1/
M39012/26- Applicable cable 2/
M17/ Dimensions Inches (millimeters)
maximum #
Category D – Field replaceable – Defined piece part 3/ 7/ 12/ 13/
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 att ached to the specified connectors,
VSWR, RF, leakage and insertion loss are not applicable.
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 cl osure 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 a ssembly shall consist of a body, center contact, ferrule and assembly
instructions.
13/ Not to be used in Army equipment.
14/ Armored cable.
# Dimensions are in inches. Metric equivalents are give n for information only.
X Denotes connector body plating material option. The only plating option s all owable are Silver or
Nickel over brass in accordance with MIL-PRF-39012. Only connectors of the sam e materials shall
be mated to avoid dissimilar metal problems. CAUTION: A NI CKEL 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. Dimensions are in inches.
2. Metric equivalents are given for information only.
3. Crimp tensile test shall be in accordance with SAE-AS39029.
4. Copyright notice: ALL information disclosed in these specification she ets which is or may be copyright
is reproduced herein with the express permission of the copyright owner.
5. .003 inch maximum break.
6. 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.
2. 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 a nd figure 2.
Outer contact:
Test ring ID: .319 inch (8.10 mm) maximum, 16 microinch (0.406 µm) finish.
Insertion force: 5 pounds (22.24 N), maximum whe n inserted a minimum of .093 inch (2.36 mm).
Contacts with slotted members: Shall contact a .324 inch (8.23 m m), minimum diameter ring within
.031 inch (0.79 mm) of their tip ends.
Hermetic seal: Not applicable.
Leakage (pressurized connectors): Not applicable.
Insulation resistance: Method 302 of MIL-STD-202, test condition B, 5,000 megohms, minimum.
MIL-PRF-39012/26H
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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): Method 10 1 of MIL-STD-202, 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 pro ce dure: 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, maximu m. The connector shall
meet the mating characteristics and fo rc e to engage and disengage requireme nts.
Contact resistance: In milliohms, maximum:
Initial After environment
Center contact 1.5 2.0
Outer contact (silver) .2 Not applicable
Outer contact (nickel) .4 Not applicable
Braid to body .1 Not applicable
Dielectric withstanding vol tage: Method 301 of MIL-STD-202, 1,500 volts rms, minimum at sea level.
Vibration, high frequency: Method 204 of MlL-STD-20 2, test condition B.
Shock: Method 213 of MIL-STD-202, test condition I.
Thermal shock: Method 107 of MIL-STD-202, 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: Method 106 of MIL-STD-202. No measurements at high humidity. Insulation
resistance shall be at least 200 megohms within 5 minutes after removal from humidity.
Corona Level:
Voltage: 375 volts rms, minimum.
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: 100 pounds 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 qualification of any of
the following connectors 2/ Qualifies the following
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 pro duces 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 o r
more connector PINs qualif ying the one connector. It is not necessary that such conne ctors b e in the
same group. Each connector, however, must be marked with its own appropriate PIN. For group
qualification, the connectors must be of simila r design and be of the same materials an d 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 o rde r to retain qualification for tho se pa rts in the corresponding right
hand column. The part does not ne cessarily have to be the part initially qualified.
MIL-PRF-39012/26H
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TABLE III. Category 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 note s @ 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
,
Arm
y,
or Nav
y
use. For OEM use onl
y
.
MIL-PRF-39012/26H
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TABLE IV. Supersession data. 1/ 2/
Preferred PIN
M39012/26 Superseded PINs
or superseded type designation
-0010 M23329/4-01, M23329/4-03
-0011 M23329/4-02, M23329/4-04
-0012 M23329/4-05, M39012/26-0221
-0023 M23329/4-06
-0101 M39012/26-0001, M39012/26-0104,
M39012/26-0004
-0102 M39012/26-0002, M39012/26-0117,
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 include s
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 amen dment. This was done as a convenience only and the
Government assumes no liability whatsoever for any inaccu racies 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-39 012, this document references the following:
FED-STD-H28
MIL-STD-202
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 5935-2011-043)
Review activities:
Army - AR, AT, EA, MI
Navy - AS, MC, OS, SH
Air Force - 19, 99
NOTE: The activities listed above were interested in this documen t as of the date of this document.
Since organizations and respo nsibilities can change, you sho uld verify the currency of the information
above using the ASSIST Online database at https://assist.daps.dla.mil.
