MIL-C-26500
C48 Series
Introduction
GENERAL DESCRIPTION
The C48 Series describes a family of connectors qualified to MIL-C-26500. While maintaining the MIL-C-26500
mating interface, this product has also been expanded to include qualifications to numerous Boeing specifications
to satisfy general purpose requirements and unique product challenges for shielding, environmental sealing,
fluid resistance, and vibration.
Design Features
A.
Positive Location Captivated Insert
(Mechanical Interlock)
B.
Insert Face Seal
C.
Pin Contact, MIL-C-39029/31
D.
Contact Pressuring Seal
E.
Anti-Deflection Disc
F.
Resilient Pin Insert
G.
Insert Rim Seal
H.
Dynamic “O” Ring Shell Seal
I.
Five-Key Shell Polarization
J.
Metal-to-Metal Shoulder
K.
Bayonet or Threaded Coupling,
Permanent Captivation
L.
Contact Retention Clip
M.
Socket Contact, MIL-C-39029/32
N.
Wire Sealing Risers
O.
Grommet
The expanded Cinch C48 product family offers numerous product options qualified to Boeing high-performance
requirements and product solutions developed for alternate termination styles/low-profile packaging.
Product Description
•
•
Threaded non-decoupling design
High-vibration bayonet plug with
metal-to-metal bottoming shells
Connectors for shell grounding /
shielding effectiveness, non-rotating
accessory teeth, and advanced
fluid-resistance elastometers
Firewall Conformance
Cinch Series
CN0966
C0909
CN1020
CN0966
CN0967
CN1020
CN1021
CN0966
CN0967
CN0915
•
•
•
Low-profile connectors -
crimp - removable contacts
Low-profile connectors -
fixed contacts / alternate
termination styles
•
CN0942
CN0944
3-2
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C48 Series
How to Order
Cinch Numbers
C48-0 6 R 22-55 P 6-102
Order Code (Deviations)
100
- Connector With Contacts & Cable Support
102
- Connector Less Cable Support With Contacts
105
- Connector Less Contacts With Cable Support
106
- Connector Less Contacts & Less Cable Support
See order codes for Boeing on page 3-14
Alternate Shell Positions
6, 7, 8, 9, 10 per table on page 3-4
(Omit for normal position)
Contact Style
P
-- Pin
S
-- Socket
Insert Arrangements
(See page 3-4)
Shell Size
8, 10, 12, 14, 16, 18, 20, 22, 24
Series Designation
C48
--
Coupling Style
0
-- Threaded
1
-- Bayonet
Shell Style
0
-- Square Flange Receptacle
3
-- Single-Hole Mounting Receptacle
6
-- Straight Plug
Environmental Class
R
-- Meets MIL-C-26500 (USAF)
3
Military Standard Part Numbers
You can use MS* as well as C48
Series part numbers when ordering
C48 Series connectors.
*MS part numbers are supplied less
cable support. If cable support is
desired, it must be ordered separately.
MS24266 R 22 T 55 P 6
Military Designation
MS24264
-- Square-Flange Receptacle
MS24265
-- Single-Hole Mounting Receptacle
MS24266
-- Straight Plug
Environmental Class
R
-- Meets MIL-C-26500 (USAF)
Shell Size
8, 10, 12, 14, 16, 18, 20, 22, or 24
Alternate Shell Positions
N, 6, 7, 8, 9, Y per table on page 3-4
Contact Style
P
-- Pin
S
-- Socket
Insert Arrangements
(See page 3-4)
Coupling Style
T
-- Threaded
B
-- Bayonet
Part numbers for the contacts and assembly tools are listed on page 3-12.
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3-3
Inserts Available
C48 Series
(Showing Front Face
of Socket Inserts)
Shell
Size-12
(Y)
(Y)
(Y)
Shell
Size-8
(Y)
(Y)
Shell
Size-10
Shell
Size-14
Shell
Size-16
(Y)
(Y)
(Y)
Shell
Size-18
(Y)
Shell
Size-20
3
(Y)
(Y)
(Y)
(Y)
Shell
Size-22
(Y)
(Y)
Shell
Size-24
(Y)
(Y)
(Y)
Shell
Size-28
CN096X
CN102X
Series
Only
Alternate Shell Positions
(Front face of receptacle shown)
NOTE: Alternate positions 6 through Y incorporate special shell polarizing
key and keyways. All inserts remain in the normal position.
For Connector Size
For Connector Size 8 and 10 12, 14, 16, 18, 20, 22, 24, and 28
Positions
A
B
C
D
A
B
C
D
Normal (N) 105°
140° 215°
265°
105°
140°
215° 265°
6
102°
132° 248°
320°
18°
149°
192° 259°
7
80°
118° 230°
312°
92°
152°
222° 342°
8
35°
140° 205°
275°
84°
152°
204° 334°
9
64°
155° 234°
304°
24°
135°
199° 240°
10 or Y*
25°
115°
220°
270°
98°
152°
268°
338°
† = #1 shielded contact is interchangeable
with #12 power contact.
(Y) = Available in Boeing Insert Style.
*Not available in Size 8 Connector. See individual part number systems.
3-4
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C48 Series
Plug Connectors
Threaded Coupling
C48-06RXX-XXXX
MS24266RXXTXXXX
BACC45FS
1
1.345 (34.164)
Max.
3
Bayonet Coupling
C48-16RXX-XXXX
MS24266RXXBXXXX
BACC45FT
1
1.345 (34.164)
Max.
Dimensions
Shell
Size
8
10
12
14
16
18
20
22
24
A. Dia.
in
mm
.328
8.331
.420 10.668
.580 14.732
.664 16.866
.769 19.533
.902 22.911
1.033 26.238
1.152 29.261
1.282 32.253
B. Dia.
in
mm
.437 11.100
.562 14.275
.750 19.050
.812 20.625
.938 23.825
1.062 26.975
1.182 30.023
1.312 33.325
1.432 36.373
C. Max.
in
mm
.776 19.712
.906 23.013
1.078 27.381
1.141 28.982
1.266 32.157
1.375 34.925
1.510 38.354
1.625 41.275
1.760 44.704
D. Thread
UNEF-2A
.437-28
.562-24
.750-20
.812-20
.937-20
1.062-18
1.187-18
1.312-18
1.437-18
1
Boeing Specifications, see page 3-14.
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3-5
C48 Series
Receptacle Connectors
Square Flange,
Threaded Coupling
C48-OORXX-XXXX
MS24264RXXTXXX
BACC45FM
1
1.407 (35.738)
Max.
Square Flange,
Bayonet Coupling
C48-1ORXX-XXXX
MS24264RXXBXXX
BACC45FN
1
1.407 (35.738)
Max.
3
Dimensions
A
+.005 (.127)
in
mm
.812
.937
1.031
1.125
1.250
1.343
1.437
1.562
1.703
20.625
23.800
26.188
28.575
31.750
34.112
36.500
39.675
43.256
B
+.005 (.127)
in
mm
.594
.719
.812
.906
.969
1.062
1.156
1.250
1.375
15.088
18.263
20.625
23.013
24.613
26.975
29.363
31.750
34.925
C
Max. Dia.
in
mm
.125 3.175
.125 3.175
.125 3.175
.125 3.175
.125 3.175
.125 3.175
.125 3.175
.125 3.175
.154 3.912
D
Max.
in
mm
.561 14.250
.696 17.679
.875 22.225
.935 23.749
1.062 26.975
1.187 30.150
1.312 33.325
1.437 36.500
1.562 39.675
F
Max.
in
mm
.437 11.100
.562 14.275
.750 19.050
.812 20.625
.938 23.825
1.062 26.975
1.182 30.023
1.312 33.325
1.432 36.373
G
H
Thread
Thread
UNEF-2A UNEF-2A
.562-24
.687-24
.875-20
.437-28
.562-24
.750-20
J
Min.
in
mm
.620 15.748
.748 18.999
.913 23.190
K
Min.
in
mm
.447 11.354
.572 14.529
.760 19.304
Shell
Size
8
10
12
14
16
18
20
22
24
1
.937-20 .812-20
1.062-18 .937-20
1.187-18 1.062-18
1.312-18 1.187-18
1.437-18 1.312-18
1.562-18 1.437-18
.980 24.892
.822 20.879
1.107 28.119
.948 24.079
1.209 30.709 1.072 27.229
1.337 33.960 1.192 30.277
1.452 36.881 1.322 33.579
1.577 40.056 1.442 36.627
= Boeing specifications, see page 3-14.
3-6
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