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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 55P SZ 16 SOC WALL MNT

MS27497T16B35S
Amphenol Aerospace
1: $160.48
100Expected 23/10/2026

Mfr. Part No.
MS27497T16B35S

Mouser Part No
654-MS27497T16B35S

Amphenol Aerospace

Circular MIL Spec Connector 55P SZ 16 SOC WALL MNT

Datasheet

100Expected 23/10/2026

$160.48

$146.34

$140.71

$136.01

$128.51

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 3P SZ 18 PIN

MS27497T18F32P
Amphenol Aerospace
1: $118.09
93On Order

Mfr. Part No.
MS27497T18F32P

Mouser Part No
654-MS27497T18F32P

Amphenol Aerospace

Circular MIL Spec Connector 3P SZ 18 PIN

Datasheet

93On Order

$118.09

$107.68

$103.54

$100.08

$94.56

Min.: 1
Mult.: 1

Circular MIL Spec Connector 55P SZ 16 PIN

MS27508E16F35P
Amphenol Aerospace
1: $136.88
74Expected 18/9/2026

Mfr. Part No.
MS27508E16F35P

Mouser Part No
654-MS27508E16F35P

Amphenol Aerospace

Circular MIL Spec Connector 55P SZ 16 PIN

Datasheet

74Expected 18/9/2026

$136.88

$124.83

$120.02

$116.02

$109.62

Min.: 1
Mult.: 1

Circular MIL Spec Connector 41P SZ 20 PIN

MS27508E20B41P
Amphenol Aerospace
1: $124.60
19Expected 16/9/2026

Mfr. Part No.
MS27508E20B41P

Mouser Part No
654-MS27508E20B41P

Amphenol Aerospace

Circular MIL Spec Connector 41P SZ 20 PIN

Datasheet

19Expected 16/9/2026

$124.60

$113.63

$109.25

$105.60

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 6P SZ 8 PIN

MS27508E8F35P
Amphenol Aerospace
1: $107.59
100Expected 5/11/2026

Mfr. Part No.
MS27508E8F35P

Mouser Part No
654-MS27508E8F35P

Amphenol Aerospace

Circular MIL Spec Connector 6P SZ 8 PIN

Datasheet

100Expected 5/11/2026

$107.59

$97.42

$76.36

$74.83

View

Min.: 1
Mult.: 1

Circular MIL Spec Connector size 16 shell recpt

MS27508E16B35P
Amphenol Aerospace
1: $133.92
79Expected 20/11/2026
Factory Special Order

Mfr. Part No.
MS27508E16B35P

Mouser Part No
654-MS27508E16B35P

Factory Special Order

Amphenol Aerospace

Circular MIL Spec Connector size 16 shell recpt

Datasheet

79Expected 20/11/2026

$133.92

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 37P 14 SIZE STRAIGHT PLUG PIN

MS27473T14B37P
Amphenol Aerospace
1: $107.66
2Expected 7/9/2026

Mfr. Part No.
MS27473T14B37P

Mouser Part No
654-MS27473T14B37P

Amphenol Aerospace

Circular MIL Spec Connector 37P 14 SIZE STRAIGHT PLUG PIN

Datasheet

2Expected 7/9/2026

$107.66

$93.96

$92.21

$91.30

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 55P SZ 16 SOCKET

MS27508E16B35S
Amphenol Aerospace
1: $285.29
14Expected 23/10/2026

Mfr. Part No.
MS27508E16B35S

Mouser Part No
654-MS27508E16B35S

Amphenol Aerospace

Circular MIL Spec Connector 55P SZ 16 SOCKET

Datasheet

14Expected 23/10/2026

$285.29

$247.63

$192.40

$158.64

View

Min.: 1
Mult.: 1

No

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

MS27473T18A53P
Amphenol Aerospace
Non-Stocked Lead-Time 9 Weeks
Factory Special Order

Mfr. Part No.
MS27473T18A53P

Mouser Part No
654-MS27473T18A53P

Factory Special Order

Amphenol Aerospace

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

Datasheet

Non-Stocked Lead-Time 9 Weeks

Quote

No

Circular MIL Spec Connector 5P SZ 10 PIN BOX MNT

MS27508E10F5P
Amphenol Aerospace
100: $71.35
20Stock Available

Mfr. Part No.
MS27508E10F5P

Mouser Part No
654-MS27508E10F5P

Amphenol Aerospace

Circular MIL Spec Connector 5P SZ 10 PIN BOX MNT

Datasheet

20Stock Available

More Info Available

$71.35

Quote

Min.: 100
Mult.: 1

Circular MIL Spec Connector 6P Sz 16 Straight Plug

MS27473T16B6SA
Amphenol Aerospace
100: $125.64
1Stock Available

Mfr. Part No.
MS27473T16B6SA

Mouser Part No
654-27473T16B6SA

Amphenol Aerospace

Circular MIL Spec Connector 6P Sz 16 Straight Plug

Datasheet

1Stock Available

More Info Available

$125.64

Min.: 100
Mult.: 1

No

Circular MIL Spec Connector SKT CON STR PL 8 CON 16 SH SZ

MS27484T16F8S
Amphenol Aerospace
1: $117.78
19Stock Available

Mfr. Part No.
MS27484T16F8S

Mouser Part No
654-27484T16F8S

Amphenol Aerospace

Circular MIL Spec Connector SKT CON STR PL 8 CON 16 SH SZ

Datasheet

19Stock Available

More Info Available

$117.78

$101.82

$100.50

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 55P 22 SIZE STRAIGHT PLUG SKT

MS27484T22F55SC
Amphenol Aerospace
1: $224.77
1Stock Available

Mfr. Part No.
MS27484T22F55SC

Mouser Part No
654-27484T22F55SC

Amphenol Aerospace

Circular MIL Spec Connector 55P 22 SIZE STRAIGHT PLUG SKT

Datasheet

1Stock Available

More Info Available

$224.77

$206.27

$198.34

$191.72

Quote

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector RECPT 22P SZ 12 SOC

MS27472E12B22S
Amphenol Aerospace
100: $99.47
15Stock Available

Mfr. Part No.
MS27472E12B22S

Mouser Part No
654-MS27472E12B22S

Amphenol Aerospace

Circular MIL Spec Connector RECPT 22P SZ 12 SOC

Datasheet

15Stock Available

More Info Available

$99.47

View

Min.: 100
Mult.: 1

No

Circular MIL Spec Connector RECPT 22P SZ 12 PIN

MS27472E12B35P
Amphenol Aerospace
1: $115.07
15Stock Available

Mfr. Part No.
MS27472E12B35P

Mouser Part No
654-MS27472E12B35P

Amphenol Aerospace

Circular MIL Spec Connector RECPT 22P SZ 12 PIN

Datasheet

15Stock Available

More Info Available

$115.07

$102.29

$98.36

$95.06

$89.81

Min.: 1
Mult.: 1

No

Circular MIL Spec Connector 4P SIZE 12 STRAIGHT RECEPTACLE SOCKET

MS27472T12B4S
Amphenol Aerospace
100: $72.49
11Stock Available

Mfr. Part No.
MS27472T12B4S

Mouser Part No
654-MS27472T12B4S

Amphenol Aerospace

Circular MIL Spec Connector 4P SIZE 12 STRAIGHT RECEPTACLE SOCKET

Datasheet

11Stock Available

More Info Available

$72.49

Quote

Min.: 100
Mult.: 1

No

Circular MIL Spec Connector 15P SZ 14 RCPT WALL MNT PIN

MS27472T14B15P
Amphenol Aerospace
100: $94.57
3Stock Available

Mfr. Part No.
MS27472T14B15P

Mouser Part No
654-MS27472T14B15P

Amphenol Aerospace

Circular MIL Spec Connector 15P SZ 14 RCPT WALL MNT PIN

Datasheet

3Stock Available

More Info Available

$94.57

Min.: 100
Mult.: 1

No

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

MS27472T14F18S
Amphenol Aerospace
100: $80.44
6Stock Available

Mfr. Part No.
MS27472T14F18S

Mouser Part No
654-MS27472T14F18S

Amphenol Aerospace

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

Datasheet

6Stock Available

More Info Available

$80.44

Min.: 100
Mult.: 1

Circular MIL Spec Connector 18P SZ 14 PLUG CBL MNT PIN

MS27473E14F18P
Amphenol Aerospace
1: $148.65
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
MS27473E14F18P

Mouser Part No
654-MS27473E14F18P

Amphenol Aerospace

Circular MIL Spec Connector 18P SZ 14 PLUG CBL MNT PIN

Datasheet

Non-Stocked Lead-Time 10 Weeks

$148.65

$124.39

$116.58

Min.: 1
Mult.: 1

Circular MIL Spec Connector 18P SIZE 14 PIN CABLE MOUNT PLUG

MS27473E14F18PA
Amphenol Aerospace
100: $82.82
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
MS27473E14F18PA

Mouser Part No
654-MS27473E14F18PA

Amphenol Aerospace

Circular MIL Spec Connector 18P SIZE 14 PIN CABLE MOUNT PLUG

Datasheet

Non-Stocked Lead-Time 12 Weeks

$82.82

Min.: 100
Mult.: 1

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

MS27473E14F35P
Amphenol Aerospace
1: $102.14
11Stock Available

Mfr. Part No.
MS27473E14F35P

Mouser Part No
654-MS27473E14F35P

Amphenol Aerospace

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

Datasheet

11Stock Available

More Info Available

$102.14

$99.76

$99.73

$96.36

Min.: 1
Mult.: 1

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

MS27473E14F35PA
Amphenol Aerospace
100: $92.52
2Stock Available

Mfr. Part No.
MS27473E14F35PA

Mouser Part No
654-MS27473E14F35PA

Amphenol Aerospace

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

Datasheet

2Stock Available

More Info Available

$92.52

Min.: 100
Mult.: 1

Circular MIL Spec Connector 5P SIZE 14 STRAIGHT PLUG SOCKET

MS27473E14F5S
Amphenol Aerospace
1: $152.42
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
MS27473E14F5S

Mouser Part No
654-MS27473E14F5S

Amphenol Aerospace

Circular MIL Spec Connector 5P SIZE 14 STRAIGHT PLUG SOCKET

Datasheet

Non-Stocked Lead-Time 10 Weeks

$152.42

$116.40

$93.06

$86.85

Min.: 1
Mult.: 1

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

MS27473E16F26P
Amphenol Aerospace
1: $148.23
3Stock Available

Mfr. Part No.
MS27473E16F26P

Mouser Part No
654-MS27473E16F26P

Amphenol Aerospace

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

Datasheet

3Stock Available

More Info Available

$148.23

$109.83

Min.: 1
Mult.: 1

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

MS27473E18F32S
Amphenol Aerospace
100: $123.90
1Stock Available

Mfr. Part No.
MS27473E18F32S

Mouser Part No
654-MS27473E18F32S

Amphenol Aerospace

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

Datasheet

1Stock Available

More Info Available

$123.90

Min.: 100
Mult.: 1