NSN 4310-00-895-8105, 4310008958105
RING ASSEMBLY,4TH STAGE

Federal Supply Classification: FSC 4310 - Compressors and Vacuum Pumps
National Item Identification Number: NIIN 008958105
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 4310-00-895-8105

National Stock Number (NSN) 4310-00-895-8105, or NIIN 008958105, (ring assembly,4th stage) was assigned January 1, 1960 in the Federal Logistics Information System (FLIS). This NSN does not replace any other NSNs.

There are 4 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 4 suppliers. Today, 3 suppliers are listed as Active suppliers 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 3 contracts issued for this part number, with 3 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 3 different suppliers. The last contract numbers awarded were: SPE7M125P2407, SPE7M117P5610, SPE7M116M9248. The total value of the awarded contracts has been US$ 2,539.92.

This NSN is somewhat common among different platforms, belonging to 4 different weapons systems.

There has been very little 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 Dec 10, 2013, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The data or the rights to use the data needed to purchase this part from additional sources are not owned by the Government and it has been determined that it is uneconomical to purchase them. 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 4310008958105 contains an unknown precious metal.

This information was last updated on Aug 01, 2025.

Technical Characteristics

GENERAL CHARACTERISTICS ITEM DESCRIPTION: (TEXT) C/O IRON,CHROME PLATE,3 RINGS,0.750 IN. OD BY 0.061 IN. MIN. 0.062 IN. MAX W BY 0.023 IN. MIN,0.028 IN. MAX THK OF 2 RINGS,0.699 IN. OD BY 0.123 IN. MIN,0.124 IN. MAX W BY 0.023 IN. MIN,0.024 IN. MAX THK OF THIRD RING,0.010 IN. MIN,0.020 IN. MAX STRAIGHT GAP IN EACH RING; END ITEM GRUMMAN AIRCRAFT CORP; A-10 AIRCRAFT MODEL