Circular Backshells

PRODUCT RANGE FINDER

Use the table below to identify the correct Series based on your required termination style, screening options, and strain relief needs.

Series	Termination Style	Screening Options			Strain Relief & Cable Sealing		Required Components
Series	Termination Style	Individual (Inner/Outer)	Overall (Outer)	Reworkable Tool Free	Heat Shrink Boot	Cable Clamp	Boot / Band	Compression Spring / Grommet
ENVIRONMENTAL
SERIES 30	Heat Shrink Boot	N/A	N/A	N/A
SERIES 31	Lamp Base Thread
SERIES 35	Shield Sock
SERIES 42	Band
SERIES 43	Cable Sealing Band In A Can
SERIES 45 & 46	Band / Spring
SERIES 49	Memory Ring
SERIES 60 & 61	Cable Clamp, Environmental	N/A	N/A	N/A
SERIES 62	Cable Clamp, Splash-Proof	N/A	N/A	N/A
SERIES 80 to 84	Cone Clamp, Environmental
SERIES 85 to 89	Cone Clamp, Splash-Proof
NON-ENVIRONMENTAL
SERIES 40	Band / Spring
SERIES 55	Cable Clamp, Non-Environmental	N/A	N/A	N/A
SERIES 70 to 77	Cone Clamp, Non-Environmental

CONNECTOR INTERFACE CODES

For standard circular interfaces

Compaero offer termination solutions for virtually all known connector interfaces, the variants highlighted below are our standard lines, available on all product lines.

CONNECTOR INTERFACE	INTERFACE CODE
EN2997, ESC10, ESC11	A
EN3645	H
MIL-DTL-26482 SERIES I SOLDER MS3110, MS3116 WITHOUT ACCESSORY TEETH	DK
MIL-DTL-26482 SERIES II MS3470, MS3471, MS3472, MS3474, MS3475, MS3476	A
MIL-DTL-38999 SERIES I & II MS27466-68, MS27472-74, MS27479-81, MS27484, MS27497, MS27652, MS27653, MS27656	F
MIL-DTL-38999 SERIES III & IV D38999/20, /24, /26, /40, /46, /47	H
MIL-DTL-5015 SOLDER MS3100, MS3101, MS3106, Amphenol Class A (Blue Insert)	BA
MIL-DTL-5015 SOLDER MS3100, MS3101, MS3106, Bendix - Class A, E & R	BB
MIL-DTL-5015 SOLDER MS3100, MS3101, MS3106, Cannon - Class A, E & R	BC
MIL-DTL-5015 SOLDER MS3100, MS3101, MS3106, Amphenol - Class R (Resilient Insert)	BR
MIL-DTL-5015 CRIMP MS3400, MS3401, MS3404, MS3406, MS3450, MS3451, MS3454, MS3456	A
MIL-DTL-83723 SERIES I & III M83723/1/8/13/,14./36-/43/,48/49/65-/78/82-187, 191, 192, 195, 197, 198	A
BS9522 F0017 PATT 105 AMPHENOL 62GB	VA
VG95234 / BS9522 F0032 PATT 121B ABCIR RANGE	VB

INTERFACE TABLE

Reference tables for catalogue series

INTERFACE A

ADAPTER SHELL SIZE	CONNECTOR SHELL SIZE	A THREAD	ØB MAX in / mm	C MAX in / mm	D MAX in / mm	E MAX in / mm	MAX ENTRY
08	8S	7/16-27UNS	0.75 19.2	0.59 15.0	0.72 18.3	1.02 25.9	02
10	10S	1/2-28UNEF	0.82 20.8	0.60 15.4	0.75 19.1	1.08 27.5	03
11	10SL	5/8-24UNEF	0.94 23.9	0.63 16.0	0.81 20.7	1.21 30.6	04
12	12, 12S	11/16-24UNEF	1.02 25.9	0.64 16.3	0.84 21.5	1.27 32.2	04
14	14, 14S	3/4-20UNEF	1.08 27.5	0.66 16.7	0.88 22.2	1.33 33.8	05
16	16, 16S	7/8-20UNEF	1.27 32.3	0.71 18.1	0.97 24.6	1.49 37.8	06
18	18	1-20UNEF	1.40 35.4	0.74 18.8	1.03 26.2	1.61 40.9	06
20	20	1 1/8-18UNEF	1.52 38.6	0.77 19.4	1.09 27.8	1.74 44.1	08

INTERFACE BR

ADAPTER SHELL SIZE	CONNECTOR SHELL SIZE	A THREAD	ØB MAX in / mm	C MAX in / mm	D MAX in / mm	E MAX in / mm	MAX ENTRY
22	22	1 1/4-18UNEF	1.65 41.8	0.79 20.1	1.16 29.4	1.86 47.3	09
24	24	1 3/8-18UNEF	1.85 46.9	0.85 21.5	1.25 31.8	2.02 51.3	10
28	28	1 5/8-18UNEF	1.97 50.1	0.87 22.2	1.31 33.4	2.14 54.4	11
32	32	1 29/32-18UN	2.22 56.4	0.93 23.5	1.44 36.5	2.39 60.8	13
36	36	2 1/16-20UNS	2.55 64.8	1.01 25.6	1.59 40.5	2.67 67.9	15
40	40	2 3/8-16UN	2.80 71.2	1.06 26.9	1.72 43.7	2.92 74.3	-

INTERFACE F

SHELL SIZE	A THREAD	ØB MAX in / mm	C MAX in / mm	D MAX in / mm	E MAX in / mm	MAX ENTRY
08	7/16-28UNEF	0.66 16.8	0.50 12.7	0.60 15.3	0.87 22.1	02
10	9/16-24UNEF	0.80 20.3	0.52 13.3	0.67 16.9	1.00 25.3	03
12	11/16-24UNEF	0.92 23.4	0.55 13.9	0.73 18.5	1.12 28.4	04
14	13/16-20UNEF	1.06 26.8	0.58 14.7	0.79 20.1	1.25 31.6	05
16	15/16-20UNEF	1.18 30.0	0.60 15.4	0.85 21.7	1.37 34.8	06
18	1 1/16-18UNEF	1.31 33.3	0.61 15.4	0.92 23.2	1.50 38.0	07
20	1 3/16-18UNEF	1.44 36.5	0.66 16.7	0.98 24.8	1.62 41.1	08
22	1 5/16-18UNEF	1.56 39.7	0.68 17.4	1.04 26.4	1.75 44.3	09
24	1 7/16-18UNEF	1.69 42.9	0.68 17.4	1.10 28.0	1.87 47.5	10

INTERFACE DK

SHELL SIZE	A THREAD	ØB MAX in / mm	C MAX in / mm	D MAX in / mm	E MAX in / mm	MAX ENTRY
08	7/16-28UNEF	0.68 17.3	0.57 14.4	0.72 18.2	1.00 25.5	02
10	9/16-24UNEF	0.80 20.3	0.59 14.9	0.86 21.8	1.16 29.5	03
12	11/16-24UNEF	0.94 23.8	0.62 15.7	0.83 21.0	1.26 32.0	04
14	13/16-20UNEF	1.06 26.8	0.65 16.5	0.92 23.4	1.40 35.5	05
16	15/16-20UNEF	1.17 29.8	0.66 16.8	0.96 24.5	1.52 38.5	06
18	1 1/16-18UNEF	1.31 33.3	0.70 17.8	1.04 26.5	1.65 42.0	07
20	1 3/16-18UNEF	1.43 36.3	0.71 18.1	1.12 28.5	1.79 45.5	08
22	1 5/16-18UNEF	1.57 39.5	0.73 18.5	1.18 30.0	1.91 48.5	09
24	1 7/16-18UNEF	1.69 42.8	0.78 19.7	1.24 31.5	2.03 51.5	10

INTERFACE VA

SHELL SIZE	A THREAD	ØB MAX in / mm	C MAX in / mm	D MAX in / mm	E MAX in / mm	MAX ENTRY
08	7/16-28UNEF	0.68 17.3	0.57 14.4	0.72 18.2	1.00 25.5	02
10	9/16-24UNEF	0.80 20.3	0.59 14.9	0.77 19.6	1.12 28.5	03
12	11/16-24UNEF	0.94 23.3	0.62 15.7	0.83 21.0	1.26 32.0	04
14	13/16-20UNEF	1.06 26.6	0.65 16.5	0.92 23.4	1.40 35.5	05
16	15/16-20UNEF	1.17 29.8	0.66 16.8	0.96 24.5	1.52 38.5	06
18	1 1/16-18UNEF	1.31 33.3	0.70 17.8	1.04 26.5	1.65 42.0	07
20	1 3/16-18UNEF	1.43 36.3	0.71 18.1	1.12 28.5	1.79 45.5	08
22	1 5/16-18UNEF	1.57 39.8	0.73 18.5	1.18 30.0	1.91 48.5	09
24	1 7/16-18UNEF	1.69 42.8	0.78 19.7	1.22 31.0	2.03 51.5	10

INTERFACE VB

SHELL SIZE	A THREAD	ØB MAX in / mm	C MAX in / mm	D MAX in / mm	E MAX in / mm	MAX ENTRY
12	5/8-24UNEF	0.80 20.3	0.68 17.3	0.83 21.1	1.16 29.4	03
14	3/4-20UNEF	0.93 23.7	0.70 17.7	0.86 21.9	1.22 31.0	04
16	7/8-20UNEF	1.05 26.7	1.00 25.3	1.20 30.4	1.62 41.2	05
18	1-20UNEF	1.19 30.3	1.01 25.7	1.23 31.2	1.68 42.8	06
20	1 1/8-18UNEF	1.39 35.3	1.04 26.3	1.29 32.8	1.81 46.0	07
22	1 1/4-18UNEF	1.51 38.3	1.06 27.0	1.35 34.4	1.93 49.1	08
24	1 3/8-18UNEF	1.63 41.3	1.09 27.6	1.42 36.0	2.06 52.3	08
28	1 5/8-18UNEF	1.88 47.8	1.13 28.6	1.51 38.4	2.25 57.1	09
32	1 7/8-16UN	2.13 54.2	1.18 29.9	1.64 41.5	2.50 63.4	11
36	2 1/16-16UNS	2.45 62.2	1.22 30.9	1.73 43.9	2.68 68.2	13
40	2 5/16-16UN	2.70 68.6	1.27 32.2	1.85 47.1	2.93 74.5	15

MATERIAL & PLATING OPTIONS

All Compaero backshells are available in a wide selection of material and plating combinations, from heavy duty marine applications to lightweight aerospace solutions, there is an option for almost any situation.

CODE	MIL SPEC CODE	MATERIAL	PLATING	PROCESS	ROHS COMPLIANT
B	-	Marine Bronze	Shotblast, Nonreflective	1000 Hour Salt Spray, Conductive -65 to +200°C	Yes
C	A	Aluminum	Anodize, Black	AMS-A-8625 Type II Class 2, 336 Hour Salt Spray, Non-Conductive -65 to +175°C	Yes
F	F, N	Aluminum	Electroless Nickel	AMS-C-26074 Class 4 Grade B; ASTM-B-733, SC 2, Type IV, 48 Hour Salt Spray, Conductive -65 to +200°C	Yes
G	-	Aluminum	Anodize, Hardcoat, Black	AMS-A-8625 Type III, Class 2, .001" thick, 336 Hour Salt Spray, Non-Conductive -65 to +200°C	Yes
KB	B	Stainless Steel	Cadmium, Black	SAE-AMS-QQ-P-416 Type II Class 3, 1000 Hour Salt Spray, Conductive -65 to +175°C	No
K	S	Stainless Steel	Passivate	SAE-AMS-QQ-P-35 Type VI, 1000 Hour Salt Spray, Conductive -65 to +200°C	Yes
KL	-	Stainless Steel	Electrodeposited Nickel	SAE-AMS-QQ-N-290 Class 1 Grade F, 1000 Hour Salt Spray, Conductive -65 to +200°C	Yes
TR	-	Aluminum	Zinc-Nickel, Black	ASTM B841 Grade 5 over electroless nickel, 500 Hour Salt Spray, Conductive -65 to +175°C	Yes
T	-	Aluminum	Zinc-Nickel, Black	ASTM B841 Grade 5 over electroless nickel, 1000 Hour Salt Spray, Conductive -65 to +175°C	No
W	W	Aluminum	Cadmium, Olive Drab	SAE-AMS-QQ-P-416 Type II Class 2 over electroless nickel, 1000 Hour Salt Spray, Conductive -65 to +175°C	No
X	-	Aluminum	Unplated	-	Yes
Y	-	Aluminum	Zinc-Cobalt, Olive Drab	ASTM B 840 Grade 6 Type D over electroless nickel, 350 Hour Salt Spray, Conductive -65 to +175°C	Yes
ZN	-	Aluminum	Zinc-Nickel, Olive Drab	ASTM B841 Grade 5 over electroless nickel, 1000 Hour Salt Spray, Conductive -65 to +175°C	No
Z	-	Aluminum	Zinc-Cobalt, Black	ASTM B 840 Grade 6 Type D over electroless nickel, 350 Hour Salt Spray, Conductive -65 to +175°C	Yes

COUPLING RING OPTIONS

Type 2 Coupling Rings

When the selected cable entry exceeds the MAX ENTRY stated in the INTERFACE TABLE, you may choose to have a type 2 assembly.

The two-piece assembly allows a large cable diameter to be maintained as close to the connector body as possible, allowing maximum continuation of screens and wire protection, whilst also providing an access point close to the connector.

To specify a type 2 assembly, place modification code -079 at the end of the part number when ordering.
Modification Code Example: CPA461W-1410-VG0-079

To receive a standard one-piece adapter, no modification code is needed.

Wrench Flat Coupling Rings OPTION W

Wrench flats are an available option on most Compaero adapters and backshells, allowing for an easier way of tightening the coupling ring when working with reduced accessibility.

Direct Coupling Rings OPTION D

Available on straight adapters only.

Seat-Lock Coupling Rings Non-Detent Self-Locking OPTION E

Using a spring loaded retaining ring, Compaero Seat-Lock coupling rings are a non detent way to achieve self locking. This option ensures that the accessory teeth of the connector mate properly with the teeth on the adapter or backshell by applying constant force between the two.

The Compaero Seat-Lock option is an excellent choice if an easy, economical self locking solution is required.

Safety Wire Holes OPTION T

Safety wire holes can be specified on standard rotatable coupling rings for use with safety wire after installation. Safety wire ensures the coupling ring will not un-couple during shock and/or vibration. These are common on AS85049 accessories.

When this option is specified the coupling ring will have 3 equally spaced wire holes (120 degrees apart), sufficient to accommodate 0.020 inch wire.

Self-Locking Coupling Rings Detent OPTION S

Detent style self locking features a ratcheting coupling ring using non corrosive clips located within the coupling ring.

Many AS85049 specifications specify this detent style self locking coupling ring making this one of the most popular ways of achieving a self locking adapter or backshell.

The above coupling ring options are available on most Compaero backshells and adapters.

Please contact the sales team for more information.

RECOMMENDED TORQUE VALUES

The below figures are provided to support operators already trained in the installation of heat shrinkable products and harnessing components. They identify the recommended torque values to be used when installing adapters onto circular electrical connectors, to consistently tighten adapters in a controlled manner.

For any questions or further instructions please contact us and we will be happy to assist you.

Connector Accessories onto Connector Threads

SHELL SIZE	MIL-DTL-26482 S1 MIL-DTL-38999 S1/S2 MIL-DTL-5015 Solder	MIL-DTL-83723 \| MIL-DTL-22992 MIL-DTL-5015 Crimp \| MIL-DTL-38999 S3/S4 MIL-DTL-26500 \| MIL-DTL-87511 MIL-DTL-26482 S2 \| MIL-DTL-28840
	TORQUE VALUES in-lb / Nm	TORQUE VALUES in-lb / Nm
08/09	30-40 3.0-4.0	51-61 5.8-6.9
10/11	30-40 3.0-4.0	71-81 8.0-9.2
12/13	35-45 4.0-5.1	103-113 11.6-12.8
14/15	35-45 4.0-5.1	111-121 12.5-13.7
16/17	35-45 4.5-5.8	111-121 12.5-13.7
18/19	35-45 4.5-5.8	111-121 12.5-13.7
20/21	75-85 8.5-9.6	131-141 14.8-15.9
22/23	75-85 8.5-9.6	131-141 14.8-15.9
24/25	75-85 8.5-9.6	131-141 14.8-15.9
28	115-125 13.0-14.1	143-153 16.2-17.3
32	115-125 13.0-14.1	143-153 16.2-17.3
36	115-125 13.0-14.1	143-153 16.2-17.3
40	155-165 17.5-18.6	159-169 18.0-19.1
44	155-165 17.5-18.6	159-169 18.0-19.1
48	155-165 17.5-18.6	159-169 18.0-19.1

Cable Clamps onto Backshells

CLAMP SIZE	TORQUE VALUES in-lb / Nm
01	35-40 4.0-4.5
02	35-40 4.0-4.5
03	35-55 4.0-6.2
04	35-55 4.0-6.2
05	35-55 4.0-6.2
06	40-60 4.5-6.8
07	40-60 4.5-6.8
08	40-60 4.5-6.8
09	80-100 9.0-11.3
10	80-100 9.0-11.3
11	80-100 9.0-11.3
12	80-100 9.0-11.3

Cable Clamp Hardware

THREAD SIZE	TORQUE VALUES in-lb / Nm
2-56	1.5-2.5 0.2-0.3
4-40	3.5-4.5 0.4-0.5
6-32	5.0-7.0 0.6-0.8
8-32	7.0-9.0 0.8-1.0
10-32	9.0-11.0 1.0-1.2
1/4-20	11.0-13.0 1.2-1.5

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