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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 (CLP) 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: $289.422 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	$289.422	Min.: 1 Mult.: 1
Circular MIL Spec Contacts PIN 20 GA PC TAIL 10-497640-015 Amphenol Aerospace 1: $16.087 3.118In Stock 313Expected 11/5/2026	Mfr. Part # 10-497640-015 Mouser Part # 654-10-497640-015	Amphenol Aerospace	Circular MIL Spec Contacts PIN 20 GA PC TAIL	Datasheet	3.118In Stock 313Expected 11/5/2026	$16.087 $13.671 $12.817 $12.202 View $11.621 $10.891 $10.379 $9.878	Min.: 1 Mult.: 1
Circular MIL Spec Contacts Pin Contact SZ 4 M39029/48-320 Amphenol Aerospace 1: $118.325 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	$118.325 $111.171 $110.464 $100.279 View $98.000 Quote	Min.: 1 Mult.: 1	No
Circular MIL Spec Contacts QUADRAX CONTACT SPLIT PAIR 21-033470-001 Amphenol Aerospace 1: $310.863 39In 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	39In Stock	$310.863 $285.537 $275.295	Min.: 1 Mult.: 1
Circular MIL Spec Contacts PIN 22D GA WIRE WRAP 38999 10-407572-075 Amphenol Aerospace 1: $24.039 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	$24.039 $20.427 $18.775 $18.354 View $18.149 $17.841 $17.670	Min.: 1 Mult.: 1
Circular MIL Spec Contacts PIN 22M P C TAIL 10-407552-085 Amphenol Aerospace 1: $4.580 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	$4.580 $4.398 $4.272 $4.158 View $3.486 $3.236 $3.190 $2.939 $2.848	Min.: 1 Mult.: 1
Circular MIL Spec Contacts PIN 20 GA PC TAIL 38999 10-497596-035 Amphenol Aerospace 1: $9.764 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	$9.764 $8.693 $8.169 $7.850 View $7.439 $7.246 $6.801	Min.: 1 Mult.: 1
Circular MIL Spec Tools, Hardware & Accessories TV 8 QDRAX METAL SEAL PLUG PCB 21-033899-8Q2 Amphenol Aerospace 1: $16.793 23In 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	23In Stock 105Expected 11/9/2026	$16.793 $14.890 $14.321 $13.614 View $12.976 $11.837 $11.074 $9.832	Min.: 1 Mult.: 1
Circular MIL Spec Contacts PIN 20 GA WIRE WRAP 10-407584-035 Amphenol Aerospace 1: $23.674 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	$23.674 $20.028 $18.821 $18.616 View $16.736 $16.360 $14.936 Quote	Min.: 1 Mult.: 1	No
Circular MIL Spec Contacts Coax Socket Contact 21-033101-025 Amphenol Aerospace 1: $122.916 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	$122.916 View $113.483 $109.917 $108.208 $105.497 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: $103.310 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	$103.310 View $89.764 $87.770 $83.213 $80.775 Quote	Min.: 1 Mult.: 1	No
Circular MIL Spec Contacts 38999 III 8 SKT CONCNTRC TWIN 21-033191-071 Amphenol Aerospace 1: $544.961 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	$544.961 View $423.788	Min.: 1 Mult.: 1
Circular MIL Spec Contacts 38999 III 8 PIN QDRAX CON 21-033384-191 Amphenol Aerospace 1: $196.890 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	$196.890 View $169.991 $163.896 $162.677 Quote	Min.: 1 Mult.: 1	No
Circular MIL Spec Contacts 38999 I II III CON 12 COAX PIN 21-033122-541 Amphenol Aerospace 1: $45.594 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	$45.594 $39.647 View $37.926 $36.707 $35.477 $33.529 Quote	Min.: 1 Mult.: 1
Circular MIL Spec Contacts CONTACT QUADRAX 21-033471-111 Amphenol Aerospace 1: $392.765 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	$392.765 $357.197 $343.002	Min.: 1 Mult.: 1
Circular MIL Spec Contacts TWINAX CONTACT 21-033908-025 Amphenol Aerospace 1: $242.802 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	$242.802	Min.: 1 Mult.: 1	No
Circular MIL Spec Contacts CONTACT 21-033384-031 Amphenol Aerospace 1: $236.593 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	$236.593 View $208.693 $201.207 $199.783 Quote	Min.: 1 Mult.: 1	No
Circular MIL Spec Contacts Bushing 21-033321-009 Amphenol Aerospace 1: $81.185 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	$81.185 $72.173 $69.393 $67.081 View $63.378 Quote	Min.: 1 Mult.: 1
Standard Circular Connector WALL MNT NIC PINS TVP00RZF-13-53P Amphenol Aerospace 1: $474.201 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	$474.201 View $403.121 $384.221	Min.: 1 Mult.: 1	No
Circular MIL Spec Contacts PIN 22M P C TAIL 10-407552-055 Amphenol Aerospace 1: $6.186 41.267In Stock	Mfr. Part # 10-407552-055 Mouser Part # 654-10-407552-055	Amphenol Aerospace	Circular MIL Spec Contacts PIN 22M P C TAIL	Datasheet	41.267In Stock	$6.186 $5.332 $5.115 $4.751 View $4.443 $4.113 $3.931 $3.372	Min.: 1 Mult.: 1
Fiber Optic Connectors ST Plg NIC SZ 11 Single Cavity CF-594611-01P Amphenol Aerospace 1: $813.728 36In 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	36In Stock	$813.728 $740.882	Min.: 1 Mult.: 1
Circular MIL Spec Contacts 8P Pin use with Cbl PIC E6A3824 21-032904-021 Amphenol Aerospace 1: $409.706 128In 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	128In Stock 1Expected 12/7/2026	$409.706 $393.324	Min.: 1 Mult.: 1
Circular MIL Spec Contacts 8P Socket use W/ Cbl PIC E6A3824 21-032905-021 Amphenol Aerospace 1: $811.198 36In 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	36In Stock	$811.198	Min.: 1 Mult.: 1
Circular MIL Spec Contacts SKT COAX SZ 8 LJT-R 21-033101-023 Amphenol Aerospace 1: $166.949 575In 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	575In Stock	$166.949 $156.992 $146.124 Quote Quote	Min.: 1 Mult.: 1
Circular MIL Spec Contacts Socket Contact 21-033101-027 Amphenol Aerospace 1: $290.003 73In 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		73In Stock	$290.003 $273.608 $269.986	Min.: 1 Mult.: 1