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Self Locking Circular Connectors

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Types of Circular Connectors

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Mating Style = Self Locking

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Part #

Circular MIL Spec Backshells Straight Shell size 25 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/88-25ZP02
Amphenol PCD
1: $98.07
53In Stock

Mfr. Part #
M85049/88-25ZP02

Mouser Part #
523-M85049/88-25ZP02

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 25 Black Zinc Nickel w/ Exposed Nickel Entry 2

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Datasheet

53In Stock

$98.07

$87.18

$86.92

$80.08

View

Min.: 1
Mult.: 1

Band Lock Adapters

Circular MIL Spec Backshells Straight Shell size 21 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/88-21ZP02
Amphenol PCD
1: $87.46
29In Stock

Mfr. Part #
M85049/88-21ZP02

Mouser Part #
523-M85049/88-21ZP02

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 21 Black Zinc Nickel w/ Exposed Nickel Entry 2

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Datasheet

29In Stock

$87.46

$75.86

$75.62

$74.13

View

Min.: 1
Mult.: 1

Band Lock Adapters

Circular MIL Spec Backshells Straight Shell size 18 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/85-18ZP02
Amphenol PCD
1: $81.69
31In Stock

Mfr. Part #
M85049/85-18ZP02

Mouser Part #
523-M85049/85-18ZP02

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 18 Black Zinc Nickel w/ Exposed Nickel Entry 2

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Datasheet

31In Stock

$81.69

$70.85

$70.64

$69.24

View

Min.: 1
Mult.: 1

Band Lock Adapters

Circular MIL Spec Backshells Straight Shell size 25 Black Zinc Nickel w/ Exposed Nickel Entry 3

M85049/88-25ZP03
Amphenol PCD
1: $98.05
25In Stock

Mfr. Part #
M85049/88-25ZP03

Mouser Part #
523-M85049/88-25ZP03

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 25 Black Zinc Nickel w/ Exposed Nickel Entry 3

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Datasheet

25In Stock

$98.05

$87.15

$85.20

$82.95

View

Min.: 1
Mult.: 1

Band Lock Adapters

Circular MIL Spec Backshells Straight Shell size 10 Black Zinc Nickel w/ Exposed Nickel Entry Size 3

M85049/82-10ZP03
Amphenol PCD
1: $73.67
34In Stock

Mfr. Part #
M85049/82-10ZP03

Mouser Part #
523-M85049/82-10ZP03

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 10 Black Zinc Nickel w/ Exposed Nickel Entry Size 3

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Datasheet

34In Stock

$73.67

$63.90

$60.22

$57.95

View

Min.: 1
Mult.: 1

Band Lock Adapters

Circular MIL Spec Backshells Straight Shell size 12 Black Zinc Nickel w/ Exposed Nickel Entry Size 1

M85049/85-12ZP01
Amphenol PCD
1: $72.92
40In Stock

Mfr. Part #
M85049/85-12ZP01

Mouser Part #
523-M85049/85-12ZP01

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 12 Black Zinc Nickel w/ Exposed Nickel Entry Size 1

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Datasheet

40In Stock

$72.92

$63.23

$61.80

$61.79

View

Min.: 1
Mult.: 1

Band Lock Adapters

Circular MIL Spec Strain Reliefs & Adapters ADPTR RING SZ18 CAD STR TINEL-LOCK

TXR40AB00-1814AI
TE Connectivity / Raychem
1: $191.37
152In Stock

Mfr. Part #
TXR40AB00-1814AI

Mouser Part #
650-TXR40AB00-1814AI

TE Connectivity / Raychem

Circular MIL Spec Strain Reliefs & Adapters ADPTR RING SZ18 CAD STR TINEL-LOCK

Datasheet

152In Stock

$191.37

$174.01

$160.75

$152.78

View

Min.: 1
Mult.: 1

Adapters

Circular MIL Spec Backshells Straight Shell size 12 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/85-12ZP02
Amphenol PCD
1: $72.92
15In Stock

Mfr. Part #
M85049/85-12ZP02

Mouser Part #
523-M85049/85-12ZP02

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 12 Black Zinc Nickel w/ Exposed Nickel Entry 2

Learn More

Datasheet

15In Stock

$72.92

$63.23

$57.97

Quote

Min.: 1
Mult.: 1

Band Lock Adapters

Circular MIL Spec Backshells Straight Shell size 12 Black Zinc Nickel w/ Exposed Nickel Entry Size 2

M85049/82-12ZP02
Amphenol PCD
1: $76.30
15In Stock

Mfr. Part #
M85049/82-12ZP02

Mouser Part #
523-M85049/82-12ZP02

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 12 Black Zinc Nickel w/ Exposed Nickel Entry Size 2

Learn More

Datasheet

15In Stock

$76.30

$66.17

$64.66

$63.12

View

Min.: 1
Mult.: 1

Band Lock Adapters

Circular MIL Spec Backshells Straight Shell size 16 Black Zinc Nickel w/ Exposed Nickel Entry 1

M85049/85-16ZP01
Amphenol PCD
1: $78.64
14In Stock

Mfr. Part #
M85049/85-16ZP01

Mouser Part #
523-M85049/85-16ZP01

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 16 Black Zinc Nickel w/ Exposed Nickel Entry 1

Learn More

Datasheet

14In Stock

$78.64

$68.19

$66.66

$62.41

View

Min.: 1
Mult.: 1

Band Lock Adapters

Circular MIL Spec Backshells Straight Shell size 16 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/82-16ZP02
Amphenol PCD
1: $81.64
11In Stock

Mfr. Part #
M85049/82-16ZP02

Mouser Part #
523-M85049/82-16ZP02

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 16 Black Zinc Nickel w/ Exposed Nickel Entry 2

Learn More

Datasheet

11In Stock

$81.64

$70.80

$69.20

$67.34

View

Min.: 1
Mult.: 1

Band Lock Adapters

Circular MIL Spec Backshells Straight Shell size 24 Black Zinc Nickel w/ Exposed Nickel Entry 1

M85049/85-24ZP01
Amphenol PCD
1: $96.55
5In Stock

Mfr. Part #
M85049/85-24ZP01

Mouser Part #
523-M85049/85-24ZP01

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 24 Black Zinc Nickel w/ Exposed Nickel Entry 1

Learn More

Datasheet

5In Stock

$96.55

$85.83

$83.88

$81.93

View

Min.: 1
Mult.: 1

Band Lock Adapters

Circular MIL Spec Backshells Straight Shell size 12 Black Zinc Nickel w/ Exposed Nickel Entry Size 3

M85049/82-12ZP03
Amphenol PCD
1: $76.30
9In Stock

Mfr. Part #
M85049/82-12ZP03

Mouser Part #
523-M85049/82-12ZP03

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 12 Black Zinc Nickel w/ Exposed Nickel Entry Size 3

Learn More

Datasheet

9In Stock

$76.30

$66.17

$64.66

$63.12

View

Min.: 1
Mult.: 1

Band Lock Adapters

Circular MIL Spec Backshells Straight Shell size 8 Black Zinc Nickel w/ Exposed Nickel Entry Size 2

M85049/85-08ZP02
Amphenol PCD
1: $70.02
28In Stock

Mfr. Part #
M85049/85-08ZP02

Mouser Part #
523-M85049/85-08ZP02

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 8 Black Zinc Nickel w/ Exposed Nickel Entry Size 2

Learn More

Datasheet

28In Stock

$70.02

$60.88

$58.45

$57.29

View

Min.: 1
Mult.: 1

Band Lock Adapters

Circular MIL Spec Backshells Straight Shell size 24 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/85-24ZP02
Amphenol PCD
1: $96.55
4In Stock

Mfr. Part #
M85049/85-24ZP02

Mouser Part #
523-M85049/85-24ZP02

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 24 Black Zinc Nickel w/ Exposed Nickel Entry 2

Learn More

Datasheet

4In Stock

$96.55

$85.83

$76.66

Min.: 1
Mult.: 1

Band Lock Adapters

Circular MIL Spec Backshells BACKSHELL BND LCK 45 DEG ADPTR CAD SZ 23

M85049/89-23W03
Amphenol PCD
1: $95.98
574In Stock

Mfr. Part #
M85049/89-23W03

Mouser Part #
523-85049/89-23W03

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL BND LCK 45 DEG ADPTR CAD SZ 23

Learn More

Datasheet

574In Stock

$95.98

$86.96

$83.45

$80.99

View

Min.: 1
Mult.: 1

Band Lock Adapters

Circular MIL Spec Backshells Straight Shell size 20 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/85-20ZP02
Amphenol PCD
1: $84.85
4In Stock

Mfr. Part #
M85049/85-20ZP02

Mouser Part #
523-M85049/85-20ZP02

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 20 Black Zinc Nickel w/ Exposed Nickel Entry 2

Learn More

Datasheet

4In Stock

$84.85

$73.58

$71.90

$67.57

View

Min.: 1
Mult.: 1

Band Lock Adapters

Circular MIL Spec Connector TV 55C 55#22D SKT PLUG ZNI

D38999/26ZE35SA
Amphenol Aerospace
1: $207.68
15In Stock

Mfr. Part #
D38999/26ZE35SA

Mouser Part #
654-D38999/26ZE35SA

Amphenol Aerospace

Circular MIL Spec Connector TV 55C 55#22D SKT PLUG ZNI

Datasheet

15In Stock

$207.68

$193.60

$170.07

Min.: 1
Mult.: 1

Plugs

Socket (Female)

Crimp

Circular MIL Spec Connector 4P PLG SZ 21 PIN CBL MNT

D38999/26WG75PN
Amphenol Aerospace
1: $972.06
28In Stock
92Expected 10/16/2026

Mfr. Part #
D38999/26WG75PN

Mouser Part #
654-D38999/26WG75PN

Amphenol Aerospace

Circular MIL Spec Connector 4P PLG SZ 21 PIN CBL MNT

Learn More

Datasheet

28In Stock

92Expected 10/16/2026

$972.06

$727.25

Quote

Min.: 1
Mult.: 1

Plugs

Pin (Male)

Crimp

Circular MIL Spec Connector 55P RCPT SZ 17 PIN PNL MNT

D38999/24FE35PN
Amphenol Aerospace
1: $165.88
368In Stock

Mfr. Part #
D38999/24FE35PN

Mouser Part #
654-D38999/24FE35PN

Amphenol Aerospace

Circular MIL Spec Connector 55P RCPT SZ 17 PIN PNL MNT

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Datasheet

368In Stock

$165.88

$160.99

$139.05

$118.68

Quote

Min.: 1
Mult.: 1

Receptacles

Pin (Male)

Crimp

Circular MIL Spec Connector 19P PLG SZ 25 SKT CBL MNT

D38999/26FJ19SN
Amphenol Aerospace
1: $491.04
89In Stock
9Expected 10/19/2026

Mfr. Part #
D38999/26FJ19SN

Mouser Part #
654-D38999/26FJ19SN

Amphenol Aerospace

Circular MIL Spec Connector 19P PLG SZ 25 SKT CBL MNT

Learn More

Datasheet

89In Stock

9Expected 10/19/2026

$491.04

$405.59

$355.36

View

Min.: 1
Mult.: 1

Plugs

Socket (Female)

Crimp

Circular MIL Spec Backshells Straight Shell size 18 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/82-18ZP02
Amphenol PCD
1: $84.51
11In Stock

Mfr. Part #
M85049/82-18ZP02

Mouser Part #
523-M85049/82-18ZP02

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 18 Black Zinc Nickel w/ Exposed Nickel Entry 2

Learn More

Datasheet

11In Stock

$84.51

$73.29

$71.63

$69.71

View

Min.: 1
Mult.: 1

Band Lock Adapters

Circular MIL Spec Backshells Straight Shell size 18 Black Zinc Nickel w/ Exposed Nickel Entry 3

M85049/82-18ZP03
Amphenol PCD
1: $84.51
24In Stock

Mfr. Part #
M85049/82-18ZP03

Mouser Part #
523-M85049/82-18ZP03

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 18 Black Zinc Nickel w/ Exposed Nickel Entry 3

Learn More

Datasheet

24In Stock

$84.51

$73.29

$68.41

$66.35

View

Min.: 1
Mult.: 1

Band Lock Adapters

Circular MIL Spec Backshells Straight Shell size 22 Black Zinc Nickel w/ Exposed Nickel Entry 3

M85049/82-22ZP03
Amphenol PCD
1: $93.77
14In Stock

Mfr. Part #
M85049/82-22ZP03

Mouser Part #
523-M85049/82-22ZP03

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 22 Black Zinc Nickel w/ Exposed Nickel Entry 3

Learn More

Datasheet

14In Stock

$93.77

$81.32

$79.47

$77.13

View

Min.: 1
Mult.: 1

Band Lock Adapters

Circular MIL Spec Backshells Straight Shell size 19 Black Zinc Nickel w/ Exposed Nickel Entry 2

M85049/88-19ZP02
Amphenol PCD
1: $84.51
16In Stock

Mfr. Part #
M85049/88-19ZP02

Mouser Part #
523-M85049/88-19ZP02

Amphenol PCD

Circular MIL Spec Backshells Straight Shell size 19 Black Zinc Nickel w/ Exposed Nickel Entry 2

Learn More

Datasheet

16In Stock

$84.51

$73.29

$66.35

Quote

Min.: 1
Mult.: 1

Band Lock Adapters

Self Locking Circular Connectors

Types of Circular Connectors

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