High-Speed Quadrax Contacts

Amphenol Aerospace High-Speed Quadrax Contacts are made up of an outer contact with four inner contacts spaced to form two 100Ω or 150Ω controlled impedance differential pairs. Both contacts, when used in Amphenol MIL-DTL-38999 III and ARINC connectors, provide an excellent alternative for harsh environment applications. These applications include Ethernet 100 Base-T 100Ω, Gigabit Ethernet 1000 Base-T 100Ω, Fibre Channel 150Ω, IEEE1394B FireWire 110Ω. Amphenol Aerospace High-Speed Quadrax Contacts are gold-plated with crimp terminations. They offer low power consumption and EMI compatibility. 

Types of Circular MIL Spec Connectors

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Results: 85
Select Image Part # Mfr. Description Datasheet Availability Pricing (EUR) Filter the results in the table by unit price based on your quantity. Qty. RoHS Product MIL Type


Amphenol Aerospace Circular MIL Spec Contacts QUADRAX CONTACT PIN 100 OHM 21In Stock
Min.: 1
Mult.: 1

MIL-DTL-38999 III
Amphenol Aerospace Circular MIL Spec Contacts CONTACT QUADRAX 46In Stock
Min.: 1
Mult.: 1

MIL-DTL-38999 III
Amphenol Aerospace Circular MIL Spec Contacts CONTACT 87In Stock
Min.: 1
Mult.: 1
No
MIL-DTL-38999 I, II, III
Amphenol Aerospace Circular MIL Spec Contacts Twinax Plug Adapter 100 Ohms 1In Stock
Min.: 1
Mult.: 1
Amphenol Aerospace Circular MIL Spec Contacts M39029/113-625 32In Stock
Min.: 1
Mult.: 1
MIL-DTL-38999 I, III
Amphenol Aerospace Circular MIL Spec Contacts 21-033650-030 29In Stock
Min.: 1
Mult.: 1

MIL-DTL-38999 II
Amphenol Aerospace Circular MIL Spec Contacts 8 GAUGE SOCKET 634In Stock
Min.: 1
Mult.: 1



Amphenol Aerospace Circular MIL Spec Contacts CONTACT 6In Stock
Min.: 1
Mult.: 1

MIL-DTL-38999 I, II
Amphenol Aerospace Circular MIL Spec Contacts 8P Pin use with Cbl GORE RCN8966-24 1In Stock
3Expected 11/05/2026
Min.: 1
Mult.: 1
MIL-DTL-38999 III
Amphenol Aerospace Circular MIL Spec Contacts CONTACT, PIN -OCTONET 2In Stock
Min.: 1
Mult.: 1
Amphenol Aerospace Circular MIL Spec Contacts Hi Frequency Socket Contact 2In Stock
Min.: 1
Mult.: 1

MIL-DTL-38999 I, III


Amphenol Aerospace Circular MIL Spec Contacts 38999 II 12 SKT COAX CONTACT 12In Stock
17On Order
Min.: 1
Mult.: 1
MIL-DTL-38999 II
Amphenol Aerospace Circular MIL Spec Contacts 38999 III 8 SKT CONCNTRC TWIN 3In Stock
Min.: 1
Mult.: 1
MIL-DTL-38999 I, III
Amphenol Aerospace Circular MIL Spec Contacts 8P 100 OHMS PIN 1In Stock
Min.: 1
Mult.: 1
MIL-DTL-38999 III
Amphenol Aerospace Circular MIL Spec Contacts CONTACT QUADRAX 32In Stock
Min.: 1
Mult.: 1

MIL-DTL-38999 III
Amphenol Aerospace Circular MIL Spec Contacts 8P Coaxial Socket for Belden 1855A Cbl 7In Stock
Min.: 1
Mult.: 1
No
MIL-DTL-38999 I, II, III
Amphenol Aerospace Circular MIL Spec Tools, Hardware & Accessories Sealing Plug Quadrax 119In Stock
Min.: 1
Mult.: 1

Accessories
Amphenol Aerospace Circular MIL Spec Contacts TWINAX CONTACT 3In Stock
Min.: 1
Mult.: 1
No
MIL-DTL-38999 I, III

Amphenol Aerospace Circular MIL Spec Contacts 8 GAUGE PIN 241In Stock
Min.: 1
Mult.: 1



Amphenol Aerospace Circular MIL Spec Contacts M39029/90-529 2In Stock
Min.: 1
Mult.: 1

MIL-DTL-38999 III

Amphenol Aerospace Circular MIL Spec Contacts TWINAX CONTACT 1In Stock
Min.: 1
Mult.: 1
No
MIL-DTL-38999 I, III
Amphenol Aerospace Circular MIL Spec Contacts SKT 12 GA COAX 5In Stock
31Expected 23/02/2026
Min.: 1
Mult.: 1


Amphenol Aerospace Circular MIL Spec Contacts D38999/24FE35A N W/PC CONTACTS 6In Stock
Min.: 1
Mult.: 1

MIL-DTL-38999 III
Amphenol Aerospace Circular MIL Spec Contacts OCTONET
4Expected 27/03/2026
Min.: 1
Mult.: 1
Amphenol Aerospace Circular MIL Spec Contacts 38999 I III CON 8 PIN COAX
7Expected 11/05/2026
Min.: 1
Mult.: 1
No
MIL-DTL-38999 I, III