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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 QUADRAX PI 21-033470-111 Amphenol Aerospace 1: $254.04 49In Stock	Mfr. Part # 21-033470-111 Mouser Part # 654-21-033470-111	Amphenol Aerospace	Circular MIL Spec Contacts QUADRAX PI Learn More about Amphenol Aerospace quadrax contacts	Datasheet	49In Stock	$254.04	Min.: 1 Mult.: 1
Circular MIL Spec Contacts QUADRAX CONTACT SPLIT PAIR 21-033470-001 Amphenol Aerospace 1: $273.40 49In Stock	Mfr. Part # 21-033470-001 Mouser Part # 654-21-033470-001	Amphenol Aerospace	Circular MIL Spec Contacts QUADRAX CONTACT SPLIT PAIR Learn More about Amphenol Aerospace quadrax contacts	Datasheet	49In Stock	$273.40 $250.63 $241.64	Min.: 1 Mult.: 1
Circular MIL Spec Contacts Pin Contact SZ 4 M39029/48-320 Amphenol Aerospace 1: $103.86 62In Stock 45On Order	Mfr. Part # M39029/48-320 Mouser Part # 654-M39029/48-320	Amphenol Aerospace	Circular MIL Spec Contacts Pin Contact SZ 4		62In Stock 45On Order	$103.86 $97.58 $96.96 $88.02 View $86.02 Quote	Min.: 1 Mult.: 1	No
Circular MIL Spec Contacts PIN 20 GA PC TAIL 38999 10-497596-035 Amphenol Aerospace 1: $8.52 165In Stock	Mfr. Part # 10-497596-035 Mouser Part # 654-10-497596-035	Amphenol Aerospace	Circular MIL Spec Contacts PIN 20 GA PC TAIL 38999	Datasheet	165In Stock	$8.52 $7.58 $7.19 $6.86 View $6.07 $5.93 $5.72 Quote	Min.: 1 Mult.: 1
Circular MIL Spec Contacts PIN 22D GA WIRE WRAP 38999 10-407572-075 Amphenol Aerospace 1: $21.10 1In Stock	Mfr. Part # 10-407572-075 Mouser Part # 654-10-407572-075	Amphenol Aerospace	Circular MIL Spec Contacts PIN 22D GA WIRE WRAP 38999	Datasheet	1In Stock	$21.10 $17.93 $16.31 $16.15	Min.: 1 Mult.: 1
Circular MIL Spec Contacts PIN 22M P C TAIL 10-407552-085 Amphenol Aerospace 1: $3.97 240In Stock	Mfr. Part # 10-407552-085 Mouser Part # 654-10-407552-085	Amphenol Aerospace	Circular MIL Spec Contacts PIN 22M P C TAIL	Datasheet	240In Stock	$3.97 $3.79 $3.69 $3.57 $2.69	Min.: 1 Mult.: 1
Circular MIL Spec Contacts CONTACT QUADRAX 21-033471-111 Amphenol Aerospace 1: $344.73 44In Stock	Mfr. Part # 21-033471-111 Mouser Part # 654-21-033471-111	Amphenol Aerospace	Circular MIL Spec Contacts CONTACT QUADRAX Learn More about Amphenol Aerospace quadrax contacts	Datasheet	44In Stock	$344.73 $313.53 $301.22	Min.: 1 Mult.: 1
Circular MIL Spec Contacts TWINAX CONTACT 21-033908-025 Amphenol Aerospace 1: $213.12 3In Stock	Mfr. Part # 21-033908-025 Mouser Part # 654-21-033908-025	Amphenol Aerospace	Circular MIL Spec Contacts TWINAX CONTACT Learn More about Amphenol Aerospace quadrax contacts	Datasheet	3In Stock	$213.12	Min.: 1 Mult.: 1	No
Circular MIL Spec Contacts PIN 20 GA WIRE WRAP 10-407584-035 Amphenol Aerospace 1: $20.78 8In Stock	Mfr. Part # 10-407584-035 Mouser Part # 654-10-407584-035	Amphenol Aerospace	Circular MIL Spec Contacts PIN 20 GA WIRE WRAP		8In Stock	$20.78 $17.55 $16.85 $14.47 View $14.22 $12.79 Quote	Min.: 1 Mult.: 1	No
Circular MIL Spec Contacts CONTACT 21-033384-031 Amphenol Aerospace 1: $207.67 4In Stock	Mfr. Part # 21-033384-031 Mouser Part # 654-21-033384-031	Amphenol Aerospace	Circular MIL Spec Contacts CONTACT Learn More about Amphenol Aerospace quadrax contacts	Datasheet	4In Stock	$207.67 View $183.18 $176.61 $175.35 Quote	Min.: 1 Mult.: 1	No
Circular MIL Spec Contacts Coax Socket Contact 21-033101-025 Amphenol Aerospace 1: $107.89 6In Stock	Mfr. Part # 21-033101-025 Mouser Part # 654-21-033101-025	Amphenol Aerospace	Circular MIL Spec Contacts Coax Socket Contact Learn More about Amphenol Aerospace quadrax contacts		6In Stock	$107.89 View $99.61 $96.48 $94.98 $92.60 Quote	Min.: 1 Mult.: 1	No
Circular MIL Spec Contacts MIL-DTL-38999 SERIES I III COAX PIN CONT 21-033102-025 Amphenol Aerospace 1: $90.68 4In Stock	Mfr. Part # 21-033102-025 Mouser Part # 654-21-033102-025	Amphenol Aerospace	Circular MIL Spec Contacts MIL-DTL-38999 SERIES I III COAX PIN CONT Learn More about Amphenol Aerospace quadrax contacts		4In Stock	$90.68 View $78.79 $77.04 $73.04 $70.90 Quote	Min.: 1 Mult.: 1	No
Circular MIL Spec Contacts 38999 I II III CON 12 COAX PIN 21-033122-541 Amphenol Aerospace 1: $40.02 16In Stock	Mfr. Part # 21-033122-541 Mouser Part # 654-21-033122-541	Amphenol Aerospace	Circular MIL Spec Contacts 38999 I II III CON 12 COAX PIN Learn More about Amphenol Aerospace quadrax contacts		16In Stock	$40.02 $34.80 View $33.29 $32.22 $31.14 $29.43 Quote	Min.: 1 Mult.: 1
Circular MIL Spec Tools, Hardware & Accessories TV 8 QDRAX METAL SEAL PLUG PCB 21-033899-8Q2 Amphenol Aerospace 1: $14.74 53In Stock 105Expected 11/9/2026	Mfr. Part # 21-033899-8Q2 Mouser Part # 654-21-033899-8Q2	Amphenol Aerospace	Circular MIL Spec Tools, Hardware & Accessories TV 8 QDRAX METAL SEAL PLUG PCB Learn More about Amphenol Aerospace quadrax contacts	Datasheet	53In Stock 105Expected 11/9/2026	$14.74 $13.07 $12.57 $11.95 View $11.39 $10.39 $9.72 $8.63	Min.: 1 Mult.: 1
Circular MIL Spec Contacts 38999 III 8 SKT CONCNTRC TWIN 21-033191-071 Amphenol Aerospace 1: $478.34 3In Stock	Mfr. Part # 21-033191-071 Mouser Part # 654-21-033191-071	Amphenol Aerospace	Circular MIL Spec Contacts 38999 III 8 SKT CONCNTRC TWIN Learn More about Amphenol Aerospace quadrax contacts	Datasheet	3In Stock	$478.34 View $371.98	Min.: 1 Mult.: 1
Circular MIL Spec Contacts 38999 III 8 PIN QDRAX CON 21-033384-191 Amphenol Aerospace 1: $172.82 1In Stock	Mfr. Part # 21-033384-191 Mouser Part # 654-21-033384-191	Amphenol Aerospace	Circular MIL Spec Contacts 38999 III 8 PIN QDRAX CON Learn More about Amphenol Aerospace quadrax contacts	Datasheet	1In Stock	$172.82 View $149.21 $143.86 $142.79 Quote	Min.: 1 Mult.: 1	No
Circular MIL Spec Contacts Bushing 21-033321-009 Amphenol Aerospace 1: $71.26 75In Stock	Mfr. Part # 21-033321-009 Mouser Part # 654-21-033321-009	Amphenol Aerospace	Circular MIL Spec Contacts Bushing Learn More about Amphenol Aerospace quadrax contacts	Datasheet	75In Stock	$71.26 $63.35 $60.91 $58.88 View $55.63 Quote	Min.: 1 Mult.: 1
Standard Circular Connector WALL MNT NIC PINS TVP00RZF-13-53P Amphenol Aerospace 1: $416.23 6In Stock	Mfr. Part # TVP00RZF-13-53P Mouser Part # 654-TVP00RZF-13-53P	Amphenol Aerospace	Standard Circular Connector WALL MNT NIC PINS Learn More about Amphenol Aerospace oval contact system	Datasheet	6In Stock	$416.23 View $353.84 $337.25	Min.: 1 Mult.: 1	No
Circular MIL Spec Contacts PIN 22M P C TAIL 10-407552-055 Amphenol Aerospace 1: $5.56 42,617In Stock	Mfr. Part # 10-407552-055 Mouser Part # 654-10-407552-055	Amphenol Aerospace	Circular MIL Spec Contacts PIN 22M P C TAIL	Datasheet	42,617In Stock	$5.56 $4.76 $4.48 $4.17 View $3.90 $3.61 $3.45 $2.96	Min.: 1 Mult.: 1
Fiber Optic Connectors ST Plg NIC SZ 11 Single Cavity CF-594611-01P Amphenol Aerospace 1: $714.25 38In Stock	Mfr. Part # CF-594611-01P Mouser Part # 654-CF-594611-01P	Amphenol Aerospace	Fiber Optic Connectors ST Plg NIC SZ 11 Single Cavity Learn More about Amphenol Aerospace mt fiber ferrules	Datasheet	38In Stock	$714.25 $650.31	Min.: 1 Mult.: 1
Circular MIL Spec Contacts 8P Pin use with Cbl PIC E6A3824 21-032904-021 Amphenol Aerospace 1: $359.62 130In Stock 1Expected 12/7/2026	Mfr. Part # 21-032904-021 Mouser Part # 654-21-032904-021	Amphenol Aerospace	Circular MIL Spec Contacts 8P Pin use with Cbl PIC E6A3824 Learn More about Amphenol Aerospace amphenol octonet contacts	Datasheet	130In Stock 1Expected 12/7/2026	$359.62 $345.24	Min.: 1 Mult.: 1
Circular MIL Spec Contacts 8P Socket use W/ Cbl PIC E6A3824 21-032905-021 Amphenol Aerospace 1: $712.03 46In Stock	Mfr. Part # 21-032905-021 Mouser Part # 654-21-032905-021	Amphenol Aerospace	Circular MIL Spec Contacts 8P Socket use W/ Cbl PIC E6A3824 Learn More about Amphenol Aerospace amphenol octonet contacts	Datasheet	46In Stock	$712.03	Min.: 1 Mult.: 1
Circular MIL Spec Contacts SKT COAX SZ 8 LJT-R 21-033101-023 Amphenol Aerospace 1: $146.54 700In Stock	Mfr. Part # 21-033101-023 Mouser Part # 654-21-033101-023	Amphenol Aerospace	Circular MIL Spec Contacts SKT COAX SZ 8 LJT-R Learn More about Amphenol Aerospace quadrax contacts	Datasheet	700In Stock	$146.54 $137.80 $128.26 Quote Quote	Min.: 1 Mult.: 1
Circular MIL Spec Contacts CONTACT 21-033101-024 Amphenol Aerospace 1: $244.33 84In Stock	Mfr. Part # 21-033101-024 Mouser Part # 654-21-033101-024	Amphenol Aerospace	Circular MIL Spec Contacts CONTACT Learn More about Amphenol Aerospace quadrax contacts		84In Stock	$244.33 $231.21 $222.80 $222.43 View Quote	Min.: 1 Mult.: 1
Circular MIL Spec Contacts Socket Contact 21-033101-027 Amphenol Aerospace 1: $254.55 75In Stock	Mfr. Part # 21-033101-027 Mouser Part # 654-21-033101-027	Amphenol Aerospace	Circular MIL Spec Contacts Socket Contact Learn More about Amphenol Aerospace quadrax contacts		75In Stock	$254.55 $240.16 $236.98	Min.: 1 Mult.: 1