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Boss Nipple

NSN: 4730-00-203-7490 | Model: MS21902-2

A straight, one-piece fitting used to join two bosses or boss fittings. Both ends are the same size and have external machine threads (straignt threads other than pipe or hose series). It is designed to facilitate a gasket, preformed packing, washer, or the like to form a seal at the boss. The center section may be suitably shaped to accommodate a wrench.

NSN Properties and Flags
NATO Stock Number
4730-00-203-7490
DEMIL
NO
Thread Class
3a all ends
Maximum Operating Temp
225.0 degrees fahrenheit 1st response
End Application
2350-01-031-8851
Connection Style
External seat for gasket seal (boss) all ends
Connection Type
Threaded external boss all ends
Thread Size
0.312 inches all ends
Reduced Passage Inside Diameter
0.062 inches all ends
Nominallength
1.062 inches
Material
Steel comp 1137 or steel comp 1141
Material Specification
66, aisi/sae 1137 or 1141 federal standard single material response
Media For Which Designed
Oxygen, gaseous 3rd response
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416, type 2, cl 1 federal specification 1st treatment response
Style Designator
Flareless w/ center wrenching facility
Thread Series Designator
Unjf all ends
Specification Data
96906-ms21902 government standard

Parts List for Self-propelled Medium Howitzer  

Other components in the assembly of NSN 2350-01-031-8851

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NSN 4730-00-203-7490 Datasheet

Supply Class (FSC):
Railing Fittings Lubrication Tube Pipe Hose
Cross Reference:
  • MS21902-2
  • MS21902-2
  • MS21902-2
Cage Codes:
  • Military Standards (CAGE 96906)
  • Aeroquip Inc Eaton (CAGE 01276)
  • Aeroquip Llc. Eaton (CAGE 00624)
Schedule B & Trade:
  • Schedule B: 7307994000 (NAICS 332919)

    Other fittings nesoi of alloy steel not stainless

  • SITC: 67959

    Iron and steel tube and pipe fittings, n.E.S.

  • End Use: 12110

    Iron and steel products, other

Identification:
HMIC

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

PMIC

U - Precious metal content is unknown

CRITL

- 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
    Sms
  • AAC
    Y
  • Quantity per pack
    1
  • Unit of Measure
    Ea
  • Shelf Life
    N/A
  • Classification Control
    U
  • MGMT_CTL
    J2200x-
  • Repariability
    This is a nonreparable item. if condemned or economically unserviceable, then dispose at the level authorized replace the item.

Questions & Answers:
What are the historical prices recorded for this stock number?
Historical data shows pricing from $22.44 to $37.40..
Does NSN 4730-00-203-7490 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 Army, Department Of The Air Force, U.s. Marine Corps, Department Of The Navy, Austria, Poland, Spain, Israel, Singapore, Malaysia, Belgium, Canada, Republic Of Korea, Netherlands, Portugal, Italy, Denmark, and Greece
What is the NIIN of NSN 4730-00-203-7490?
002037490 or 00-203-7490
Does NSN 4730-00-203-7490 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 4730-00-203-7490?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Jan 01, 1963