D38999/26WC98SN Amphenol 10-Position MIL-Spec Connector
Manufacturer: Amphenol
Series: Tri-Start™ TV / MIL-DTL-38999 Series III
Package/Case: Shell Size 13, 10-Position Free-Hanging Circular Plug
Description: 10-position MIL-DTL-38999 Series III female plug with Size 20 crimp contacts, olive-drab cadmium-plated aluminum shell and normal key orientation.
The D38999/26WC98SN from Amphenol Aerospace is a 10-position female circular plug qualified to MIL-DTL-38999 Series III. It features ten Size 20 socket contacts, an aluminum shell with olive-drab cadmium plating and a self-locking tri-start threaded coupling. This rugged cable-mounted connector is designed for aerospace, military, marine, communication and industrial systems exposed to vibration, moisture and temperature extremes.
Specifications
| Parameter | Specification |
|---|---|
| Connector type | Straight circular plug |
| Contact gender | Female sockets |
| Number of positions | 10 |
| Contact arrangement | 10 × Size 20 contacts |
| Shell size / insert arrangement | 13-98 |
| MIL shell size | C |
| Termination | Crimp |
| Mounting type | Free-hanging / cable mount |
| Coupling mechanism | Tri-start threaded, self-locking |
| Shell material | Aluminum |
| Shell finish | Olive-drab cadmium |
| Housing color | Olive drab |
| Contact material | Copper alloy |
| Contact finish | Gold |
| Contact finish thickness | 50µin / 1.27µm |
| Current rating | Up to 7.5A per contact |
| Key orientation | N, normal |
| Shielding | Shielded |
| Environmental protection | Environment-resistant |
| Operating temperature | −65°C to +175°C |
| Qualification | MIL-DTL-38999 Series III |
| Applications | Aerospace, aviation, marine and military |
| Part status | Active |
Features and Applications
The D38999/26WC98SN uses a self-locking tri-start coupling mechanism that provides secure mating under vibration while supporting rapid connection and removal. The conductive aluminum shell also helps maintain EMI/RFI shielding through the connector interface.
Typical applications include:
Aircraft avionics
Radar and communication systems
Military ground vehicles
Navigation and control equipment
Unmanned aerial vehicles
Marine and shipboard electronics
Rugged sensors and instrumentation
Industrial equipment operating in harsh environments
Mating Connectors and Accessories
A compatible mating receptacle must have:
Shell size 13
Insert arrangement 98
Male pin contacts
Normal key orientation N
Possible mating configurations include:
D38999/20WC98PN – wall-mount receptacle with male pin contacts
D38999/24WC98PN – jam-nut receptacle with male pin contacts
The appropriate receptacle depends on the required panel-mounting method.
Common accessories include:
M39029/56-351 Size 20 socket contacts
Contact insertion and removal tools
M85049 backshells
Cable clamps and strain relief
EMI/RFI shield termination hardware
Protective caps
Sealing plugs for unused positions
W Finish vs F Finish
| Feature | W Service Class | F Service Class |
|---|---|---|
| Shell material | Aluminum | Aluminum |
| Shell finish | Olive-drab cadmium | Electroless nickel |
| Typical color | Olive drab | Silver |
| Maximum listed temperature | +175°C | +200°C |
| Common use | Traditional military systems | Aerospace and RoHS-oriented applications |
| Key consideration | Cadmium compliance | Finish and corrosion requirements |
Standard Version vs LC Version
D38999/26WC98SN: Complete connector configuration with female socket contacts, subject to supplier packaging.
D38999/26WC98SN-LC: Connector housing supplied without contacts.
For the LC version, compatible Size 20 socket contacts must be ordered separately.
D38999/26WC98SN FAQ
Is D38999/26WC98SN a plug or receptacle?
It is a straight, free-hanging plug designed for cable mounting.
Is it a 10-position connector?
Yes. The 13-98 insert arrangement contains ten Size 20 contact positions.
Does it use male or female contacts?
It uses female socket contacts. The letter S identifies the socket configuration.
What mates with D38999/26WC98SN?
A compatible receptacle must have a 13-98 arrangement, male pin contacts and normal key orientation. D38999/20WC98PN and D38999/24WC98PN are applicable receptacle configurations.
What does the C in the part number mean?
The letter C identifies shell size 13. It does not indicate alternate key orientation; the final N specifies normal orientation.
Does the connector contain cadmium?
The W service class uses an olive-drab cadmium finish. Confirm applicable RoHS, REACH and customer material requirements before procurement.
Availability, Price and RFQ
DataStorageIC supplies Amphenol MIL-DTL-38999 connectors for prototype, maintenance and production requirements. Contact us for current information on D38999/26WC98SN stock, price, lead time, date code and supporting documentation.
