NSN 1660-00-997-9249, 1660009979249
SUPPORT,BELLOWS GUI

Federal Supply Classification: FSC 1660 - Aircraft Air Conditioning, Heating, and Pressurizing Equipment
National Item Identification Number: NIIN 009979249
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 1660-00-997-9249

National Stock Number (NSN) 1660-00-997-9249, or NIIN 009979249, (support,bellows gui) was assigned November 14, 1966 in the Federal Logistics Information System (FLIS). NIIN 009979249 was cancelled on December 15, 2017, with a cancelled status of "Item is Cancelled - Inactive." There is no known replacement specified for this stock number. This NSN does not replace any other NSNs.

There is only one manufacturer part number 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 not been procured by the US Government in over 5 years.

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 1660009979249 does not contain precious metals.

This information was last updated on Aug 01, 2025.

Technical Characteristics

GENERAL CHARACTERISTICS ITEM DESCRIPTION: (TEXT) ALUMINUM ALLOY QQ-A-327 TEMPER 0,T4,T6 OR AMS4025,AMS4026,OR AMS4027;CHROMATE MIL-C-5541 TY 1;0.075 IN. MIN 0.086 IN. MAX THK;1.350 IN. MIN 1.355 IN. MAX OD;0.3125 IN. MIN 0.3135 IN. MAX ID;FOUR 0.307 IN. MIN 0.322 IN. MAX HOLES EQUALLY SPACED ON 0.820 IN. MIN 0.860 IN. MAX DIA BOLT CIRCLE