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High-Speed Connectors for MIL-DTL-38999

Amphenol Aerospace High-Speed Connectors for MIL-DTL-38999 provide superior electrical performance plus shielding to eliminate interference from outside electrical sources. Amphenol offers an expansive range of contacts that provide high-speed transmission and operate in high-frequency conditions. Amphenol Aerospace High-Speed Connectors are ideal for integrating high-speed and high-frequency contacts.

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Part #

Circular MIL Spec Contacts CONTACT

21-033101-024
Amphenol Aerospace
1: $256.959
96Expected 8/24/2026

Mfr. Part #
21-033101-024

Mouser Part #
654-21-033101-024

Amphenol Aerospace

Circular MIL Spec Contacts CONTACT

96Expected 8/24/2026

$256.959

$243.161

$234.317

$233.927

View

Min.: 1
Mult.: 1

Circular MIL Spec Contacts Socket Contact

21-033101-027
Amphenol Aerospace
1: $267.708
37Expected 10/1/2026

Mfr. Part #
21-033101-027

Mouser Part #
654-21-033101-027

Amphenol Aerospace

Circular MIL Spec Contacts Socket Contact

37Expected 10/1/2026

$267.708

$252.574

$249.230

Min.: 1
Mult.: 1

Circular MIL Spec Contacts 38999 I II III CON 16 PIN COAX

21-033122-563
Amphenol Aerospace
1: $41.026
340On Order

Mfr. Part #
21-033122-563

Mouser Part #
654-21-033122-563

Amphenol Aerospace

Circular MIL Spec Contacts 38999 I II III CON 16 PIN COAX

340On Order

$41.026

$39.806

$39.407

$39.154

Min.: 1
Mult.: 1

No

Fiber Optic Connectors ST Plg NIC SZ 11 Single Cavity

CF-594611-01P
Amphenol Aerospace
1: $751.170
61Expected 1/11/2027

Mfr. Part #
CF-594611-01P

Mouser Part #
654-CF-594611-01P

Amphenol Aerospace

Fiber Optic Connectors ST Plg NIC SZ 11 Single Cavity

Datasheet

61Expected 1/11/2027

$751.170

$683.925

Min.: 1
Mult.: 1

Circular MIL Spec Contacts QUADRAX CONTACT SPLIT PAIR

21-033471-001
Amphenol Aerospace
1: $244.707
2In Stock
Factory Special Order

Mfr. Part #
21-033471-001

Mouser Part #
654-21-033471-001

Factory Special Order

Amphenol Aerospace

Circular MIL Spec Contacts QUADRAX CONTACT SPLIT PAIR

Datasheet

2In Stock

$244.707

View

Min.: 1
Mult.: 1

Circular MIL Spec Contacts Hi Frequency Pin Contact

21-033102-027
Amphenol Aerospace
1: $378.272
4Expected 11/23/2026

Mfr. Part #
21-033102-027

Mouser Part #
654-21-033102-027

Amphenol Aerospace

Circular MIL Spec Contacts Hi Frequency Pin Contact

4Expected 11/23/2026

$378.272

View

Min.: 1
Mult.: 1

Circular MIL Spec Contacts 38999 II 12 SKT COAX CONTACT

21-033121-546
Amphenol Aerospace
1: $58.789
101On Order

Mfr. Part #
21-033121-546

Mouser Part #
654-21-033121-546

Amphenol Aerospace

Circular MIL Spec Contacts 38999 II 12 SKT COAX CONTACT

101On Order

$58.789

$55.098

Min.: 1
Mult.: 1

Circular MIL Spec Contacts MiniatureCylindrical Connector

21-033388-021
Amphenol Aerospace
1: $200.894
8On Order

Mfr. Part #
21-033388-021

Mouser Part #
654-21-033388-021

Amphenol Aerospace

Circular MIL Spec Contacts MiniatureCylindrical Connector

Datasheet

8On Order

$200.894

View

Min.: 1
Mult.: 1

Circular MIL Spec Contacts CONTACT

21-033650-031
Amphenol Aerospace
1: $167.471
76Expected 9/8/2026

Mfr. Part #
21-033650-031

Mouser Part #
654-21-033650-031

Amphenol Aerospace

Circular MIL Spec Contacts CONTACT

76Expected 9/8/2026

$167.471

$156.891

Min.: 1
Mult.: 1

No

Circular MIL Spec Contacts 21-033650-030

21-033650-030
Amphenol Aerospace
1: $141.799
32Expected 9/21/2026

Mfr. Part #
21-033650-030

Mouser Part #
654-21033650030

Amphenol Aerospace

Circular MIL Spec Contacts 21-033650-030

Datasheet

32Expected 9/21/2026

$141.799

$120.534

$112.994

Min.: 1
Mult.: 1

Circular MIL Spec Contacts PIN 22M P C TAIL

10-407552-085
Amphenol Aerospace
1: $4.175
240Expected 10/6/2026

Mfr. Part #
10-407552-085

Mouser Part #
654-10-407552-085

Amphenol Aerospace

Circular MIL Spec Contacts PIN 22M P C TAIL

Datasheet

240Expected 10/6/2026

$4.175

$3.986

$3.881

$3.755

$2.829

Min.: 1
Mult.: 1

Circular MIL Spec Contacts PIN 16 GA PC TAIL

10-497630-035
Amphenol Aerospace
1: $15.838
55Expected 12/18/2026

Mfr. Part #
10-497630-035

Mouser Part #
654-10-497630-035

Amphenol Aerospace

Circular MIL Spec Contacts PIN 16 GA PC TAIL

Datasheet

55Expected 12/18/2026

$15.838

$12.673

$12.179

$11.043

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Contacts TWINAX CONTACT

21-033908-025
Amphenol Aerospace
1: $224.136
3Expected 8/31/2026

Mfr. Part #
21-033908-025

Mouser Part #
654-21-033908-025

Amphenol Aerospace

Circular MIL Spec Contacts TWINAX CONTACT

Datasheet

3Expected 8/31/2026

$224.136

Min.: 1
Mult.: 1

No

Circular MIL Spec Contacts PIN 20 GA PC TAIL

10-497596-025
Amphenol Aerospace
1: $10.201
2Expected 12/23/2026

Mfr. Part #
10-497596-025

Mouser Part #
654-10-497596-025

Amphenol Aerospace

Circular MIL Spec Contacts PIN 20 GA PC TAIL

Datasheet

2Expected 12/23/2026

$10.201

$9.181

$8.655

$8.424

View

Min.: 1
Mult.: 1

Circular MIL Spec Contacts SKT PC TAIL

10-497631-075
Amphenol Aerospace
1: $51.691
70Stock Available

Mfr. Part #
10-497631-075

Mouser Part #
654-10-497631-075

Amphenol Aerospace

Circular MIL Spec Contacts SKT PC TAIL

70Stock Available

More Info Available

$51.691

$51.659

$43.046

$39.828

$38.839

Min.: 1
Mult.: 1

No

Circular MIL Spec Contacts PIN 20 GA PC TAIL

10-497640-065
Amphenol Aerospace
1: $8.729
Non-Stocked Lead-Time 18 Weeks

Mfr. Part #
10-497640-065

Mouser Part #
654-10-497640-065

Amphenol Aerospace

Circular MIL Spec Contacts PIN 20 GA PC TAIL

Non-Stocked Lead-Time 18 Weeks

$8.729

$7.867

$7.404

$7.036

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Contacts CONTACT

10-497694-135
Amphenol Aerospace
100: $10.138
Non-Stocked Lead-Time 18 Weeks

Mfr. Part #
10-497694-135

Mouser Part #
654-10-497694-135

Amphenol Aerospace

Circular MIL Spec Contacts CONTACT

Non-Stocked Lead-Time 18 Weeks

$10.138

$9.244

$8.645

Min.: 100
Mult.: 1

No

Circular MIL Spec Contacts CONTACT

10-597502-025
Amphenol Aerospace
1: $27.786
Lead-Time 18 Weeks

Mfr. Part #
10-597502-025

Mouser Part #
654-10-597502-025

Amphenol Aerospace

Circular MIL Spec Contacts CONTACT

Datasheet

Lead-Time 18 Weeks

$27.786

$26.092

$22.264

$21.938

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Contacts 8P Pin use with Cbl Thermax MX10G-24HP

21-032904-001
Amphenol Aerospace
Non-Stocked Lead-Time 13 Weeks

Mfr. Part #
21-032904-001

Mouser Part #
654-21-032904-001

Amphenol Aerospace

Circular MIL Spec Contacts 8P Pin use with Cbl Thermax MX10G-24HP

Datasheet

Non-Stocked Lead-Time 13 Weeks

Quote

Circular MIL Spec Contacts 8P Socket use W/ Cbl Thermax MX10G-24HP

21-032905-001
Amphenol Aerospace
Lead-Time 13 Weeks

Mfr. Part #
21-032905-001

Mouser Part #
654-21-032905-001

Amphenol Aerospace

Circular MIL Spec Contacts 8P Socket use W/ Cbl Thermax MX10G-24HP

Datasheet

Lead-Time 13 Weeks

Quote

Circular MIL Spec Contacts 8P Pin PCB Crimp

21-032906-001
Amphenol Aerospace
Lead-Time 15 Weeks

Mfr. Part #
21-032906-001

Mouser Part #
654-21-032906-001

Amphenol Aerospace

Circular MIL Spec Contacts 8P Pin PCB Crimp

Datasheet

Lead-Time 15 Weeks

Quote

Circular MIL Spec Contacts 8P Socket PCB Crimp

21-032907-001
Amphenol Aerospace
N/A

Mfr. Part #
21-032907-001

Mouser Part #
654-21-032907-001

Amphenol Aerospace

Circular MIL Spec Contacts 8P Socket PCB Crimp

Datasheet

N/A

Quote

Circular MIL Spec Contacts QUADRAX CONTACT PIN 26 AWG 150 OHM

21-033450-001
Amphenol Aerospace
N/A

Mfr. Part #
21-033450-001

Mouser Part #
654-21-033450-001

Amphenol Aerospace

Circular MIL Spec Contacts QUADRAX CONTACT PIN 26 AWG 150 OHM

Datasheet

N/A

Quote

No

Circular MIL Spec Contacts QUADRAX CONTACT SKT 26 AWG 150 OHM

21-033451-001
Amphenol Aerospace
Lead-Time 13 Weeks

Mfr. Part #
21-033451-001

Mouser Part #
654-21-033451-001

Amphenol Aerospace

Circular MIL Spec Contacts QUADRAX CONTACT SKT 26 AWG 150 OHM

Datasheet

Lead-Time 13 Weeks

Quote

No

Circular MIL Spec Contacts 8P Coaxial Pin for Belden 1855A Cbl

21-033592-031
Amphenol Aerospace
Non-Stocked Lead-Time 13 Weeks
Factory Special Order

Mfr. Part #
21-033592-031

Mouser Part #
654-21-033592-031

Factory Special Order

Amphenol Aerospace

Circular MIL Spec Contacts 8P Coaxial Pin for Belden 1855A Cbl

Datasheet

Non-Stocked Lead-Time 13 Weeks

Quote

No