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Quick Disconnect Coupling Half

NSN: 4730-00-457-6390 | Model: EC250D6

A fluid line fitting having a pipe, tube or hose connection or a through hole to accommodate a bolt, fluid passage on one end. The other end must have an internal or external quick disconnect feature for connecting a mating part to form a quick disconnect coupling assembly. The fitting may incorporate a self-sealing feature for the purpose of automatically shutting off the flow of fluid when disconnected from its mating half. For self-sealing fittings with an external or internal threaded disconnect end, see coupling half, self-sealing. See also, connector, multiple, fluid pressure line.

NSN Properties and Flags
NATO Stock Number
Thread Class
3a all ends
Overall Length
2.116 inches
Quick Disconnect Method
Spring push-pull all ends
Connection Style
Flared all ends
Leg Length
Between 0.556 inches and 0.928 inches
Connection Type
Threaded external tube first fluid end connection
Features Provided
Thread Size
0.562 inches all ends
Seat Angle
37.0 degrees
Outside Diameter Tube Accommodated
0.375 inches all ends
Steel body
Material Specification
66 federal specification single material response body
Surface Treatment
Passivate body
Style Designator
Male coupling half
Thread Series Designator
Unjf all ends

Inventory Check

The last inventory check on this NSN was done on 10/13/2021. Due to rapid changes in inventory this may not be the current stock qty.

  • New Surplus: 3

Pricing and Availability

Send us a request for quote using the form below. Our team will contact you with an up to date pricing and availability quote ASAP.

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NSN 4730-00-457-6390 Datasheet

Supply Class (FSC):
Railing Fittings Lubrication Tube Pipe Hose
Cross Reference:
  • EC250D6
Cage Codes:
  • Transdigm Inc (CAGE 79326)
Schedule B & Trade:
  • Schedule B: 7307199030 (NAICS 331511)

    Unions, pipe, of iron or steel, cast

  • SITC: 67952

    Iron and steel cast fittings, except of nonmalleable cast iron

  • End Use: 12110

    Iron and steel products, other


N - Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.


U - Precious metal content is unknown


- The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Freight Information:
  • NMFC:

    052190 - Pipe, tubing, or pipe or tubing fitti

  • WCC:

    576 - Metal and metal products, nos, (less than 35 feet)

  • SHC:

    9 - Other or no special handling required (sh)

  • ADC:

    A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.

  • ACC:

    B - Construction materials: includes paint and related materials, prefabricated building, wood products, metal and composition mater

  • LTL:

    W - Rating variable

  • TCC:

    Z - No special type of cargo code applicable

NSN Management Codes:
  • SOS
  • AAC
  • Quantity per pack
  • Unit of Measure
  • Shelf Life
  • Classification Control
  • Repariability

Questions & Answers:

What are the historical prices recorded for this stock number?
Historical data shows pricing from $374.46 to $624.11..
Does NSN 4730-00-457-6390 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Department Of The Air Force, Department Of The Navy, Spain, and Australia
What is the NIIN of NSN 4730-00-457-6390?
004576390 or 00-457-6390
Does NSN 4730-00-457-6390 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 4730-00-457-6390?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Sep 17, 1969