D38999/20FJ4SA-CO by Conesys | Connector Circular | Avnet AMERICAS
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D38999/20FJ4SA-CO

Conesys

Conn MIL-DTL-38999 Circular SKT 56 POS Crimp ST Wall Mount 56 Terminal 1 Port

Manufacturer Part #: D38999/20FJ4SA-CO

Alternate Part #: D38999/20FJ4SA-CO


legend RoHS Non-Compliant

Descriptions

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Information

MIL-DTL-38999 Series III is the newest cylindrical connector designed for highest performance capabilities used in both general purpose and severe environment applications.These connectors feature an improved “one-turn” coupling system, utilizing self-locking acme thread. Acme threads provide coupling durability, while thicker wall sections and greater coupling surface area improve strength and shock resistance. Blunting of the threads on both receptacle and plug coupling nut eliminates cross threading.Elongated mounting holes permit the Series III Connector to intermount with various existing Mil-spec flange mounted receptacles, giving it a design replacement advantage.Wall mount receptacle is offered in 9 shell sizes and 54 insert arrangements utilizing M39029 contacts in sizes 22D, 20, 16, 12, 10 power and 8 twinax.These connectors are available in wide range of shell materials and finishes. Aluminum shells are offered in electroless nickel and olive drab cadmium. Other finishes such as anodic and zinc cobalt are available upon request to commercial callouts only. In addition, we offer stainless steel shells (both passivated and electro-deposited nickel plated) with firewall inserts, and for highly corrosive environments, nickel-aluminum-bronze shells with standard environment-resisting inserts (commercial callouts only).

Key Features

  • MIL-STD-1560 Insert Arrangements
    • Series III connectors use insert patterns and contacts common to Series I, making for an easy transition from bayonet to triple-lead, acme-thread, self-locking coupling.
  • Metal-to-Metal Bottoming
    • This feature precludes relative shell-to-shell motion, which may result in ordinary connector wear and moisture entrapment.
  • Lock wiring Eliminated
    • Self-locking quick coupling plug eliminates the need for lock wiring.
  • Firewall Capability
    • Stainless steel shells in both K and S firewall classes are offered.
  • Universal I/R Tool
    • A single, expendable plastic tool is used for both insertion and removal of contacts.
  • Scoop-Proof Design
    • Recessed pins in elongated shells minimize the possibility for contact damage. In a blind mating application, mating shells cannot “scoop” the pins, and cause a shorting or bending of contacts.
  • Closed-Entry Socket Insert
    • Hard dielectric socket face has lead-in chamfers for positive alignment of pins (even partially bent within pre-established limits) with sockets.
  • Interfacial Pin Insert Seal
    • Raised moisture barriers around each pin, which mate into lead-in chamfers of hard face socket insert, provide individual contact sealing. Interfacial seal is never touched by service tools.
  • Elastomer Wire Sealing Grommet
    • Sealing over a wide range of wire diameters is assured by a triple wire seal in each cavity at the rear of the connector.
  • Superior Contact Stability
    • Rear release crimp contact system features a stamped beryllium-copper retaining clip captivated by molded-in shoulders of each contact cavity in the insulator. A rear-inserted M81969 plastic tool expands the tines beyond the shoulder, releasing the contact.
  • Metric Accessory Thread
    • Metric thread results in additional wall thickness giving greater strength and shock resistance.
  • Twinax Contacts
    • Aero Electric is Qualified to make and supply M39029/90-529 and M39029/91-530 size 8 Twinax contacts used in 38999 III connectors.
  • Wall mount receptacle
  • Aluminum shell, electro less nickel finish
  • Shell Size "J

Technical Attributes

Description
Value
Find similar Parts
Gender
RCP
Body Orientation
Straight
Strain Relief
No
Operating Temperature
-65 to 200 °C
Mounting
Wall Mount
Contact Gender
SKT
Contact Material
Beryllium Copper
Shell Size / Insert Arrangement
25-4
Termination Method
Crimp
Contacts Classification
(8/48)Signal
Product Length
33.66 mm

ECCN / UNSPSC

Description
Value
ECCN:
EAR99
SCHEDULE B:
8536694020
UNSPSC:
39121413
UNSPSC VERSION:
V15.1101
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Your Price:

USD    $31.89
  • Lead time: 16 weeks
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