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MIL-DTL-38999 Series II Circular Connectors

Amphenol Aerospace MIL-DTL-38999 Series II consists of subminiature circular connectors designed to offer high reliability and high contact density with maximum weight and space savings. Amphenol MIL-DTL-38999 Series II Circular Connectors feature a lightweight, space-saving design, 3-point bayonet lock system, and error-proof alternate positioning. Amphenol Aerospace MIL-DTL-38999 Series II Circular Connectors are ideally suited for industrial applications, military and commercial air, military vehicles, missiles and ordnance, and C4ISR.

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Part #

Circular MIL Spec Connector 32P SZ 18 PLUG CBL MNT SKT

MS27473T18A32S
Amphenol Aerospace
1: $166.24
68In Stock

Mfr. Part No.
MS27473T18A32S

Mouser Part No
654-MS27473T18A32S

Amphenol Aerospace

Circular MIL Spec Connector 32P SZ 18 PLUG CBL MNT SKT

Datasheet

68In Stock

$166.24

$151.61

$145.77

$140.90

$133.12

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 53P SZ 18 PLUG CBL MNT PIN

MS27473T18A53P
Amphenol Aerospace
1: $236.17
36In Stock

Mfr. Part No.
MS27473T18A53P

Mouser Part No
654-MS27473T18A53P

Amphenol Aerospace

Circular MIL Spec Connector 53P SZ 18 PLUG CBL MNT PIN

Datasheet

36In Stock

$236.17

$216.74

$208.40

$201.45

Quote

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 26P SZ 16 PLUG CBL MNT SKT

MS27473T16F26S
Amphenol Aerospace
1: $146.98
5In Stock

Mfr. Part No.
MS27473T16F26S

Mouser Part No
654-MS27473T16F26S

Amphenol Aerospace

Circular MIL Spec Connector 26P SZ 16 PLUG CBL MNT SKT

Datasheet

5In Stock

$146.98

$134.04

$128.88

$124.57

$117.71

Min.: 1
Mult.: 1

Circular MIL Spec Connector 15P 14 SIZE STRAIGHT PLUG PIN

MS27473T14F15PC
Amphenol Aerospace
1: $101.53
4In Stock

Mfr. Part No.
MS27473T14F15PC

Mouser Part No
654-MS27473T14F15PC

Amphenol Aerospace

Circular MIL Spec Connector 15P 14 SIZE STRAIGHT PLUG PIN

Datasheet

4In Stock

$101.53

$90.24

$86.76

$85.47

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 22P JAM NUT RECEPT PIN CRIMP SZ 12

MS27474E12B35P
Amphenol Aerospace
1: $241.35
3In Stock

Mfr. Part No.
MS27474E12B35P

Mouser Part No
654-MS27474E12B35P

Amphenol Aerospace

Circular MIL Spec Connector 22P JAM NUT RECEPT PIN CRIMP SZ 12

Datasheet

3In Stock

$241.35

$209.15

$197.48

$192.10

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 5P SZ 14 FEM WALL MNT PIN

MS27472T14B5P
Amphenol Aerospace
1: $115.55
6In Stock

Mfr. Part No.
MS27472T14B5P

Mouser Part No
654-MS27472T14B5P

Amphenol Aerospace

Circular MIL Spec Connector 5P SZ 14 FEM WALL MNT PIN

Datasheet

6In Stock

$115.55

$102.72

$98.77

$95.47

$90.20

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 26P SZ 16 PLUG CBL MNT PIN

MS27473T16B26P
Amphenol Aerospace
1: $106.42
1In Stock

Mfr. Part No.
MS27473T16B26P

Mouser Part No
654-MS27473T16B26P

Amphenol Aerospace

Circular MIL Spec Connector 26P SZ 16 PLUG CBL MNT PIN

Datasheet

1In Stock

$106.42

$101.32

$98.97

$96.92

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 32P SZ 18 PLUG CBL MNT SKT

MS27473T18B32P
Amphenol Aerospace
1: $152.69
4In Stock

Mfr. Part No.
MS27473T18B32P

Mouser Part No
654-MS27473T18B32P

Amphenol Aerospace

Circular MIL Spec Connector 32P SZ 18 PLUG CBL MNT SKT

Datasheet

4In Stock

$152.69

$139.24

$133.88

$129.41

$122.26

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 37P 14 SIZE STRAIGHT PLUG PIN

MS27473T14F35P
Amphenol Aerospace
1: $94.91
24Expected 15/9/2026

Mfr. Part No.
MS27473T14F35P

Mouser Part No
654-MS27473T14F35P

Amphenol Aerospace

Circular MIL Spec Connector 37P 14 SIZE STRAIGHT PLUG PIN

Datasheet

24Expected 15/9/2026

$94.91

$84.71

$83.29

$82.94

Min.: 1
Mult.: 1

Circular MIL Spec Connector 12P 14 SIZE JAM NUT RECEPTACLE SKT

MS27474E14F97S
Amphenol Aerospace
1: $936.05
5In Stock

Mfr. Part No.
MS27474E14F97S

Mouser Part No
654-MS27474E14F97S

Amphenol Aerospace

Circular MIL Spec Connector 12P 14 SIZE JAM NUT RECEPTACLE SKT

Datasheet

5In Stock

$936.05

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 18P SZ 14 FEM PNL MNT SKT

MS27474T14F18S
Amphenol Aerospace
1: $346.78
34Expected 11/12/2026

Mfr. Part No.
MS27474T14F18S

Mouser Part No
654-MS27474T14F18S

Amphenol Aerospace

Circular MIL Spec Connector 18P SZ 14 FEM PNL MNT SKT

Datasheet

34Expected 11/12/2026

$346.78

$310.03

Min.: 1
Mult.: 1

Circular MIL Spec Connector 3P SZ 12 PLUG CBL MNT PIN

MS27473E12B3P
Amphenol Aerospace
1: $96.69
60Expected 4/8/2026

Mfr. Part No.
MS27473E12B3P

Mouser Part No
654-MS27473E12B3P

Amphenol Aerospace

Circular MIL Spec Connector 3P SZ 12 PLUG CBL MNT PIN

Datasheet

60Expected 4/8/2026

$96.69

$87.82

$80.61

$77.92

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector PLUG

MS27473E18A53P
Amphenol Aerospace
1: $257.82
1In Stock

Mfr. Part No.
MS27473E18A53P

Mouser Part No
654-MS27473E18A53P

Amphenol Aerospace

Circular MIL Spec Connector PLUG

Datasheet

1In Stock

$257.82

$222.59

$214.62

$213.00

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 5P SZ 10 PLUG CBL MNT SKT

MS27473T10B5S-LC
Amphenol Aerospace
1: $93.03
1In Stock

Mfr. Part No.
MS27473T10B5S-LC

Mouser Part No
654-MS27473T10B5SL

Amphenol Aerospace

Circular MIL Spec Connector 5P SZ 10 PLUG CBL MNT SKT

Datasheet

1In Stock

$93.03

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 13P 10 SIZE STRAIGHT PLUG SKT

MS27473T10F35S
Amphenol Aerospace
1: $114.61
99On Order

Mfr. Part No.
MS27473T10F35S

Mouser Part No
654-MS27473T10F35S

Amphenol Aerospace

Circular MIL Spec Connector 13P 10 SIZE STRAIGHT PLUG SKT

Datasheet

99On Order

$114.61

$99.54

$73.00

Min.: 1
Mult.: 1

Circular MIL Spec Connector 22P SZ 12 PLUG CBL MNT SKT

MS27473T12B35S-LC
Amphenol Aerospace
1: $124.89
2In Stock

Mfr. Part No.
MS27473T12B35S-LC

Mouser Part No
654-MS27473T12B35SL

Amphenol Aerospace

Circular MIL Spec Connector 22P SZ 12 PLUG CBL MNT SKT

Datasheet

2In Stock

$124.89

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 55P SZ 16 PLUG CBL MNT SKT

MS27473T16B35S-LC
Amphenol Aerospace
1: $99.59
3In Stock

Mfr. Part No.
MS27473T16B35S-LC

Mouser Part No
654-MS27473T16B35SL

Amphenol Aerospace

Circular MIL Spec Connector 55P SZ 16 PLUG CBL MNT SKT

Datasheet

3In Stock

$99.59

$86.36

$83.04

$80.26

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 55P Sz 16 Crimp Strt Cable Mount Plug

MS27473T16F55S
Amphenol Aerospace
1: $414.71
10Expected 22/12/2026

Mfr. Part No.
MS27473T16F55S

Mouser Part No
654-MS27473T16F55S

Amphenol Aerospace

Circular MIL Spec Connector 55P Sz 16 Crimp Strt Cable Mount Plug

Datasheet

10Expected 22/12/2026

$414.71

$375.70

$357.27

Min.: 1
Mult.: 1

Circular MIL Spec Connector 32P SZ 18 PLUG CBL MNT PIN

MS27473T18B32P-LC
Amphenol Aerospace
1: $120.19
8In Stock

Mfr. Part No.
MS27473T18B32P-LC

Mouser Part No
654-MS27473T18B32PL

Amphenol Aerospace

Circular MIL Spec Connector 32P SZ 18 PLUG CBL MNT PIN

Datasheet

8In Stock

$120.19

$102.21

$99.86

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 66P SZ 18 PLUG CBL MNT PIN

MS27473T18B35P
Amphenol Aerospace
1: $189.87
19Expected 15/9/2026

Mfr. Part No.
MS27473T18B35P

Mouser Part No
654-MS27473T18B35P

Amphenol Aerospace

Circular MIL Spec Connector 66P SZ 18 PLUG CBL MNT PIN

Datasheet

19Expected 15/9/2026

$189.87

$140.21

$136.19

$130.30

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 128P SZ 24 PLUG CBL MNT PIN

MS27473T24B35P
Amphenol Aerospace
1: $501.25
7Expected 29/6/2026

Mfr. Part No.
MS27473T24B35P

Mouser Part No
654-MS27473T24B35P

Amphenol Aerospace

Circular MIL Spec Connector 128P SZ 24 PLUG CBL MNT PIN

Datasheet

7Expected 29/6/2026

$501.25

$455.93

$439.59

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 6P SIZE 8 SOCKET CABLE MOUNT PLUG

MS27473T8A35S
Amphenol Aerospace
1: $76.30
97Expected 4/8/2026

Mfr. Part No.
MS27473T8A35S

Mouser Part No
654-MS27473T8A35S

Amphenol Aerospace

Circular MIL Spec Connector 6P SIZE 8 SOCKET CABLE MOUNT PLUG

Datasheet

97Expected 4/8/2026

$76.30

$68.00

$63.68

$59.95

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 6P 8B SIZE STRAIGHT PLUG SKT

MS27473T8B35S-LC
Amphenol Aerospace
1: $88.17
1In Stock

Mfr. Part No.
MS27473T8B35S-LC

Mouser Part No
654-MS27473T8B35S-LC

Amphenol Aerospace

Circular MIL Spec Connector 6P 8B SIZE STRAIGHT PLUG SKT

Datasheet

1In Stock

$88.17

$76.45

$73.50

$71.06

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 5P Size 10 Rear Mount Receptacle

MS27474T10F5P
Amphenol Aerospace
1: $338.41
90Expected 4/8/2026

Mfr. Part No.
MS27474T10F5P

Mouser Part No
654-MS27474T10F5P

Amphenol Aerospace

Circular MIL Spec Connector 5P Size 10 Rear Mount Receptacle

Datasheet

90Expected 4/8/2026

$338.41

$297.56

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 37P SZ 14 PLUG CBL MNT PIN

MS27484T14B35P-LC
Amphenol Aerospace
1: $133.34
8In Stock

Mfr. Part No.
MS27484T14B35P-LC

Mouser Part No
654-MS27484T14B35PL

Amphenol Aerospace

Circular MIL Spec Connector 37P SZ 14 PLUG CBL MNT PIN

Datasheet

8In Stock

$133.34

View

Min.: 1
Mult.: 1

No