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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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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.	RoHS
Circular MIL Spec Contacts 38999 I III CON 8 PIN COAX 21-033102-041 Amphenol Aerospace 1: $329.45 7In Stock	Mfr. Part No. 21-033102-041 Mouser Part No 654-21-033102-041	Amphenol Aerospace	Circular MIL Spec Contacts 38999 I III CON 8 PIN COAX Learn More about Amphenol Aerospace quadrax contacts		7In Stock	$329.45 View $299.67 $288.92	Min.: 1 Mult.: 1	No
Circular MIL Spec Contacts BUSHING 21-033321-005 Amphenol Aerospace 1: $18.85 2,021In Stock 1,363Expected 02/11/2026	Mfr. Part No. 21-033321-005 Mouser Part No 654-21-033321-005	Amphenol Aerospace	Circular MIL Spec Contacts BUSHING Learn More about Amphenol Aerospace quadrax contacts	Datasheet	2,021In Stock 1,363Expected 02/11/2026	$18.85 $16.10 $15.15 $14.63 View $13.79 $13.39 $13.27 Quote	Min.: 1 Mult.: 1
RF Connectors / Coaxial Connectors CONTACT 21-033591-001 Amphenol Aerospace 1: $187.57 206In Stock	Mfr. Part No. 21-033591-001 Mouser Part No 654-21-033591-001	Amphenol Aerospace	RF Connectors / Coaxial Connectors CONTACT Learn More about Amphenol Aerospace quadrax contacts	Datasheet	206In Stock	$187.57 $169.76 $165.72 $161.87 View Quote	Min.: 1 Mult.: 1
RF Connectors / Coaxial Connectors COAX CONTACT 21-033592-001 Amphenol Aerospace 1: $152.50 389In Stock 364Expected 09/11/2026	Mfr. Part No. 21-033592-001 Mouser Part No 654-21-033592-001	Amphenol Aerospace	RF Connectors / Coaxial Connectors COAX CONTACT Learn More about Amphenol Aerospace quadrax contacts	Datasheet	389In Stock 364Expected 09/11/2026	$152.50 $146.39	Min.: 1 Mult.: 1
Circular MIL Spec Contacts 16P PC Tail Contact 10-497630-055 Amphenol Aerospace 1: $8.40 671In Stock	Mfr. Part No. 10-497630-055 Mouser Part No 654-10-497630-055	Amphenol Aerospace	Circular MIL Spec Contacts 16P PC Tail Contact	Datasheet	671In Stock	$8.40 $7.60 $7.18 $6.91 View $6.65 $5.95 $5.60 $5.59	Min.: 1 Mult.: 1
Circular MIL Spec Contacts PIN 20 GA PC TAIL 10-497640-015 Amphenol Aerospace 1: $14.12 3,118In Stock 383Expected 25/12/2026	Mfr. Part No. 10-497640-015 Mouser Part No 654-10-497640-015	Amphenol Aerospace	Circular MIL Spec Contacts PIN 20 GA PC TAIL	Datasheet	3,118In Stock 383Expected 25/12/2026	$14.12 $12.00 $11.25 $10.71 View $10.20 $9.56 $9.11 $8.67	Min.: 1 Mult.: 1
Circular MIL Spec Contacts PIN 20 GA PC TAIL 10-497640-025 Amphenol Aerospace 1: $8.60 565In Stock 2,085Expected 01/12/2026	Mfr. Part No. 10-497640-025 Mouser Part No 654-10-497640-025	Amphenol Aerospace	Circular MIL Spec Contacts PIN 20 GA PC TAIL	Datasheet	565In Stock 2,085Expected 01/12/2026	$8.60 $7.69 $7.02 $6.71 View $6.42 $5.97 $5.71 $5.40 Quote	Min.: 1 Mult.: 1
Circular MIL Spec Contacts 38999 III PIN 8 QUADRAX CONTAC 21-033384-021 Amphenol Aerospace 1: $321.55 42In Stock	Mfr. Part No. 21-033384-021 Mouser Part No 654-21-033384-021	Amphenol Aerospace	Circular MIL Spec Contacts 38999 III PIN 8 QUADRAX CONTAC Learn More about Amphenol Aerospace quadrax contacts	Datasheet	42In Stock	$321.55 $289.83 $279.44	Min.: 1 Mult.: 1
Circular MIL Spec Contacts 8P Socket use W/ Cbl GORE RCN8966-24 21-032905-011 Amphenol Aerospace 1: $685.44 7In Stock	Mfr. Part No. 21-032905-011 Mouser Part No 654-21-032905-011	Amphenol Aerospace	Circular MIL Spec Contacts 8P Socket use W/ Cbl GORE RCN8966-24 Learn More about Amphenol Aerospace amphenol octonet contacts	Datasheet	7In Stock	$685.44	Min.: 1 Mult.: 1
Circular MIL Spec Contacts PIN COAX SZ 8 21-033102-023 Amphenol Aerospace 1: $131.95 121In Stock 181Expected 23/11/2026	Mfr. Part No. 21-033102-023 Mouser Part No 654-21-033102-023	Amphenol Aerospace	Circular MIL Spec Contacts PIN COAX SZ 8 Learn More about Amphenol Aerospace quadrax contacts		121In Stock 181Expected 23/11/2026	$131.95 $122.83 $115.40 $113.78 View $111.34 Quote	Min.: 1 Mult.: 1
Circular MIL Spec Contacts COAX CONTACT 21-033102-024 Amphenol Aerospace 1: $210.41 71In Stock	Mfr. Part No. 21-033102-024 Mouser Part No 654-21-033102-024	Amphenol Aerospace	Circular MIL Spec Contacts COAX CONTACT Learn More about Amphenol Aerospace quadrax contacts		71In Stock	$210.41 $170.96 $143.97 $107.35 View $106.27	Min.: 1 Mult.: 1
Circular MIL Spec Contacts 38999 I II III CON 16 PIN COAX 21-033122-563 Amphenol Aerospace 1: $39.32 301In Stock	Mfr. Part No. 21-033122-563 Mouser Part No 654-21-033122-563	Amphenol Aerospace	Circular MIL Spec Contacts 38999 I II III CON 16 PIN COAX Learn More about Amphenol Aerospace quadrax contacts		301In Stock	$39.32 $37.23	Min.: 1 Mult.: 1	No
Circular MIL Spec Contacts MIL-DTL-38999 SERIES I III COAX SCKT CON 21-033123-563 Amphenol Aerospace 1: $67.64 137In Stock 189Expected 21/12/2026	Mfr. Part No. 21-033123-563 Mouser Part No 654-21-033123-563	Amphenol Aerospace	Circular MIL Spec Contacts MIL-DTL-38999 SERIES I III COAX SCKT CON Learn More about Amphenol Aerospace quadrax contacts		137In Stock 189Expected 21/12/2026	$67.64 $59.73 $57.29 $55.26 View $52.03 Quote	Min.: 1 Mult.: 1
Circular MIL Spec Contacts QUADRAX CONTACT 21-033385-021 Amphenol Aerospace 1: $240.54 14In Stock	Mfr. Part No. 21-033385-021 Mouser Part No 654-21-033385-021	Amphenol Aerospace	Circular MIL Spec Contacts QUADRAX CONTACT Learn More about Amphenol Aerospace quadrax contacts	Datasheet	14In Stock	$240.54 $208.19 View $197.89 $192.70	Min.: 1 Mult.: 1
Circular MIL Spec Contacts QUADRAX CONTACT PIN 100 OHM 21-033387-021 Amphenol Aerospace 1: $182.43 18In Stock	Mfr. Part No. 21-033387-021 Mouser Part No 654-21-033387-021	Amphenol Aerospace	Circular MIL Spec Contacts QUADRAX CONTACT PIN 100 OHM Learn More about Amphenol Aerospace amphenolhd38999	Datasheet	18In Stock	$182.43 $176.21	Min.: 1 Mult.: 1
Circular MIL Spec Contacts MiniatureCylindrical Connector 21-033388-021 Amphenol Aerospace 1: $196.08 12In Stock 12Expected 04/01/2027	Mfr. Part No. 21-033388-021 Mouser Part No 654-21-033388-021	Amphenol Aerospace	Circular MIL Spec Contacts MiniatureCylindrical Connector Learn More about Amphenol Aerospace amphenolhd38999	Datasheet	12In Stock 12Expected 04/01/2027	$196.08 $191.65 View $186.42 $182.93 Quote	Min.: 1 Mult.: 1
Circular MIL Spec Contacts CONTACT QUADRAX 21-033470-151 Amphenol Aerospace 1: $225.58 22In Stock	Mfr. Part No. 21-033470-151 Mouser Part No 654-21-033470-151	Amphenol Aerospace	Circular MIL Spec Contacts CONTACT QUADRAX Learn More about Amphenol Aerospace quadrax contacts	Datasheet	22In Stock	$225.58 $209.25 View $205.09	Min.: 1 Mult.: 1
Circular MIL Spec Contacts CONTACT, SKT -QUADRAX 21-033471-151 Amphenol Aerospace 1: $541.90 17In Stock 10Expected 14/12/2026	Mfr. Part No. 21-033471-151 Mouser Part No 654-21-033471-151	Amphenol Aerospace	Circular MIL Spec Contacts CONTACT, SKT -QUADRAX Learn More about Amphenol Aerospace quadrax contacts	Datasheet	17In Stock 10Expected 14/12/2026	$541.90 $518.58 Quote Quote	Min.: 1 Mult.: 1
Circular MIL Spec Contacts CONTACT 21-033650-031 Amphenol Aerospace 1: $162.42 76In Stock	Mfr. Part No. 21-033650-031 Mouser Part No 654-21-033650-031	Amphenol Aerospace	Circular MIL Spec Contacts CONTACT Learn More about Amphenol Aerospace quadrax contacts		76In Stock	$162.42 $149.18 $147.96 $145.51 View Quote	Min.: 1 Mult.: 1	No
Circular MIL Spec Contacts SIZE 12 PIN -SHIELDED 21-033651-011 Amphenol Aerospace 1: $110.90 107In Stock	Mfr. Part No. 21-033651-011 Mouser Part No 654-21-033651-011	Amphenol Aerospace	Circular MIL Spec Contacts SIZE 12 PIN -SHIELDED Learn More about Amphenol Aerospace quadrax contacts		107In Stock	$110.90 $101.13 $97.24 $93.99 View $88.80 Quote	Min.: 1 Mult.: 1
RF Connectors / Coaxial Connectors Coaxial,12Pin,2.1 GHz,V73263 21-033651-031 Amphenol Aerospace Shipping Restricted	Mfr. Part No. 21-033651-031 Mouser Part No 654-21-033651-031	Amphenol Aerospace	RF Connectors / Coaxial Connectors Coaxial,12Pin,2.1 GHz,V73263 Learn More about Amphenol Aerospace quadrax contacts Export outside of USA is prohibited.	Datasheet			Shipping Restricted
Circular MIL Spec Tools, Hardware & Accessories Sealing Plug Quadrax 21-033899-8Q1 Amphenol Aerospace 1: $32.00 258In Stock	Mfr. Part No. 21-033899-8Q1 Mouser Part No 654-21-033899-8Q1	Amphenol Aerospace	Circular MIL Spec Tools, Hardware & Accessories Sealing Plug Quadrax Learn More about Amphenol Aerospace quadrax contacts	Datasheet	258In Stock	$32.00 $25.15 $20.71 $17.60 View $16.00 $13.06	Min.: 1 Mult.: 1
Circular MIL Spec Contacts 21-033650-030 21-033650-030 Amphenol Aerospace 1: $124.84 12In Stock	Mfr. Part No. 21-033650-030 Mouser Part No 654-21033650030	Amphenol Aerospace	Circular MIL Spec Contacts 21-033650-030 Learn More about Amphenol Aerospace quadrax contacts	Datasheet	12In Stock	$124.84 $112.10 View $107.18 $103.59	Min.: 1 Mult.: 1
Circular MIL Spec Contacts 21-033651-030 21-033651-030 Amphenol Aerospace 1: $114.61 68In Stock	Mfr. Part No. 21-033651-030 Mouser Part No 654-21033651030	Amphenol Aerospace	Circular MIL Spec Contacts 21-033651-030 Learn More about Amphenol Aerospace quadrax contacts	Datasheet	68In Stock	$114.61	Min.: 1 Mult.: 1
Fibre Optic Connectors Straight Plug Pin 13-02 CF-5E4613-02P Amphenol Aerospace 1: $287.71 17In Stock	Mfr. Part No. CF-5E4613-02P Mouser Part No 654-CF59461302P	Amphenol Aerospace	Fibre Optic Connectors Straight Plug Pin 13-02 Learn More about Amphenol Aerospace mt fiber ferrules	Datasheet	17In Stock	$287.71 $284.90 View $284.89	Min.: 1 Mult.: 1