NSN 4530-01-181-1972, 4530011811972
SLEEVE ASSEMBLY,AIR

Federal Supply Classification: FSC 4530 - Fuel Burning Equipment Units
National Item Identification Number: NIIN 011811972
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: We have 1 qualified suppliers

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DLMS^® Summary

National Stock Number 4530-01-181-1972

National Stock Number (NSN) 4530-01-181-1972, or NIIN 011811972, (sleeve assembly,air) was assigned June 7, 1984 in the Federal Logistics Information System (FLIS). This NSN does not replace any other NSNs.

There are 2 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 3 suppliers. 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. ISO Group has several sources of supply for this NSN.

This part number has not been procured by the US Government in over a year. There have been 21 contracts issued for this part number, with 21 awards given. The US Government has only awarded those contracts to one supplier. The last contract numbers awarded were: SPE8E824F0161, SPE8E823P0707, SPE8E823P0707, SPE8E823P0707, SPE8E823P0707. The total value of the awarded contracts has been US$ 1,040,210.12.

This NSN is somewhat common among different platforms, belonging to 3 different weapons systems.

There has been a moderate 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 Sep 02, 2006, 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 data needed to produce this item from additional sources is not physically available. Valid AMCs: 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 4530011811972 does not contain precious metals.

This information was last updated on Aug 01, 2025.

Technical Characteristics

GENERAL CHARACTERISTICS ITEM DESCRIPTION: (TEXT) SLEEVE IS AL ALLOY 6061-T6511; LG O/A 5.100 IN.; ID 0.929-0.934 IN.; OD 1.090-1.095 IN.; WITH JUMPER ASSY MS25083-1BB5 AND FLAME ARRESTER 310C052-3