NSN 4820-01-030-5231, 4820010305231
Cancelled -> Replaced by 5365012681047

Federal Supply Classification: FSC 4820 - Valves, Nonpowered
National Item Identification Number: NIIN 010305231
Codification Country: United States
Item Name Code: INC 77777
Criticality: (X) This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Hazardous Material Indicator Code: (N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.

Availability: Readily Available Qualified Suppliers: Currently qualifying suppliers

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DLMS^® Summary

National Stock Number 4820-01-030-5231

National Stock Number (NSN) 4820-01-030-5231, or NIIN 010305231, (support seat) was assigned November 8, 1976 in the Federal Logistics Information System (FLIS). This NSN replaces 1 stock number, 5365012681047.

There are 4 manufacturer part numbers associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts.

This part number has been procured by the US Government within the last year, but shows no recent (last 90 days) procurement activity. There have been 6 contracts issued for this part number, with 6 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 2 different suppliers. The last contract numbers awarded were: SPE7MC25P0149, SPE7MC22P1293, SPE7MC22V2685, SPE7MC19V8779, SPE7MC19P3342. The total value of the awarded contracts has been US$ 22,825.00.

This NSN is fairly common among different weapons systems, belonging to 18 different platforms.

There has been a small amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Aug 02, 2004, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. The Government's rights to use data in its possession is questionable. (NOTE: This code is only applicable to parts under immediate buy requirements and only as long as rights to data are still under review for resolution and appropriate recoding.) Valid AMCs: 1, 2, 3, 4 and 5.

This NSN is assigned to Item Name Code (INC) 77777. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4820010305231 does not contain precious metals.

This information was last updated on Aug 01, 2025.

Technical Characteristics

GENERAL CHARACTERISTICS ITEM DESCRIPTION: (TEXT) NMATERIAL CORROSION RESISTING STEEL,OD 0.561 IN.,FLANGE OD 0.678 IN.,ID 0.377 IN.,THICKNESS OVERALL 0.161 IN.,FLANGE THICKNESS 0.066 IN.,FACE GROOVE OD 0.527 IN.,FACE GROOVE ID 0.430 IN.,FACE GROOVE DEPTH 0.073 IN.
END ITEM IDENTIFICATION: (AGAV) MAROTTA VALVE CORP PRESSURE REDUCING VALVE P/N 280038
GENERAL CHARACTERISTICS ITEM DESCRIPTION: (TEXT) MATERIAL CORROSION RESISTING STEEL,OD 0.561 IN.,FLANGE OD 0.678 IN.,ID 0.377 IN.,THICKNESS OVERALL 0.161 IN.,FLANGE THICKNESS 0.066 IN.,FACE GROOVE OD 0.527 IN.,FACE GROOVE ID 0.430 IN.,FACE GROOVE DEPTH 0.073 IN.