ASTONICS INC is listed on the QPL for MIL-C-81659 as an authorized assembly distributor for Radiall. Extensive component inventory allows us to offer connector delivery in 2-3 day leadtime for common configurations. We can assist you in developing your part number or cross reference competitor part numbers:

ARINC 404 Commercial   DSX       DPX RM
ARINC 404 Military   DSX M81659/ DPX RME / MME  RM  / M
ARINC 404 Contacts 616*** M39029/ 030 / 031 205 / 204

ARINC 404 / MIL-C-81659 (Radiall DSX series) is described as follows:

MIL-C-81659B: These environmental or non environmental connectors are offered in four shell sizes (size 1, 2, 3 and 4) that have dimensions conforming to the MIL-C-81659B standard and a polarization system providing 99 polarization positions. They use size 20HD, 16 and 12 power contacts.
ARINC 404A : Connectors of this type are offered in one shell size (size 1) only, the shell having no polarization system. It uses size 20, 20HD, 16 and 12 power contacts.
ARINC 404 B : These connectors are identical to MIL-C-81659B connectors and are available in non-environmental version only. The power contacts are of the same sizes as those used on the ARINC 404A connectors.
SPECIAL CONNECTORS : shielded and filtered connectors. Also connectors for front-release front-removal contacts, and connectors with special plating such as nickel or cadmium olive drab are available.

DSX series connectors are composed of the following 3 parts:

The contacts: allow signal and power transmission. RADIALL DSX series contacts are offered in size 1, 3, 5, 7, 9, 12, 16, 20, 20HD, 22; in signal, power, coaxial, twinax, fiber optic contacts and in crimp, wire wrap, PC tail and fiber optic contact termination.
The inserts : provide retention of the contacts in a wide variety of contact arrangements. Mixed contact arrangements are available allowing a combination of signal, power, coax, triax, twinax to be used. Contacts are installed and removed using simple standard tooling. Inserts are available for either front-release front- removal contacts or rear-release rear-removal contacts.
The shell: retains the inserts and provides protection and alignment of the inserts and contacts during mating. The shell can be fitted with grounding spring fingers which provide shell to shell conductivity once mated. RADIALL DSX series offers 4 shell sizes; size 1, 2, 3 and 4.



Salt spray MIL-STD-1344A method 1001.1 test condition B (48 hours)
Altitude moisture injection Insulation resistance > 100 M altitude 50000 feet
Fluid resistance 20 hours immersion in fluids MIL-H-5606 and MIL-L-23699
Durability 500 mating and unmating cycles
Vibration MIL-STD-1344A method 2005 test condition IV (20g from 10 to 2000Hz)
Shock MIL-STD-1344A method 2004 (50g - 11ms - half sine)
Mating force < 45 pounds (200N) per insert
Insert retention force > 120Lbs (534N) in each direction
Contact retention force max axial displacement = .012 inches (0,3mm)
Humidity 10 cycles 24 hours each
Sealing 20 hours for MIL-L23699 and MIL-H5606


Temperature range -65°C / +125°C
Temperature life 1000 hours at 125°C


Contacts copper alloy, gold over nickel underplate
Inserts thermosetting glass filled plastic or aluminum alloy cadmium clear chromate plated
Shells aluminum alloy cadmium yellow chromate or olive drab or nickel plated