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NSN: 4730-00-006-7903 | Model: 623014-1

A straight tube fitting having a different size connection on each end. It is designed to join two tubes of different sizes. Excludes bushing (as modified).


Aluminum material, nominal overall length: 1.297 inches, seat angle: 37 degrees 1st end, nominal thread size: 0.438 inches 1st end

NSN Properties and Flags
NATO Stock Number
Thread Class
3a 2nd end
Reducer Type
Connection Style
Flared (tube) 1st end
Connection Type
Threaded external tube 2nd end
Nominal Thread Size
0.375 inches 2nd end
Seat Angle
37 degrees 1st end
Nominal Outside Diameter Tube Accommodated
0.188 inches 2nd end
Nominal Overall Length
1.297 inches
Aluminum Alloy
Surface Treatment
Anodize inside
Surface Treatment Document and Classification
Mil-a-8625,type 2 mil spec single treatment response outside
Thread Series Designator
Unf 2nd end

Pricing and Availability

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NSN 4730-00-006-7903 Datasheet

Supply Class (FSC):
Railing Fittings Lubrication Tube Pipe Hose
Cross Reference:
  • 623014-1
  • 623014
Cage Codes:
  • Honeywell Limited (CAGE 07217)
Schedule B & Trade:
  • Schedule B: 7609000000 (NAICS 332919)

    Aluminum tube or pipe fittings (couplings, elbows sleeves)

  • SITC: 68427

    Aluminum and aluminum alloy tube and pipe fittings (e.G. Couplings, elbows and sleeves)

  • End Use: 12300

    Finished metal shapes


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 $257.99 to $429.98..
Does NSN 4730-00-006-7903 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, and Department Of The Navy
What is the NIIN of NSN 4730-00-006-7903?
000067903 or 00-006-7903
Does NSN 4730-00-006-7903 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 4730-00-006-7903?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Jun 30, 1972