The Insulation Pipe Covering,thermal, cataloged under National Stock Number 1660-01-154-7530, is classified within Federal Supply Class 1660 (Aircraft Air Conditioning, Heating, and Pressurizing Equipment) of the Aircraft Components and Accessories group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-154-7530 |
| Primary Part Number | 74A835789-1068 |
| Item Name | Insulation Pipe Covering,thermal |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 74A835789-1068 | The Boeing Company Div Defense (USA) |
| 74A835789-1068 PRIMARY | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems (USA) |
| Reference | Meaning |
|---|---|
| 74A835789-1068 | 5/9 Secondary reference Hi-Temp Insulation Inc Dba Hi-Temp Insulation Inc |
| 74A835789-1050 | 5/9 Secondary reference Hi-Temp Insulation Inc Dba Hi-Temp Insulation Inc |
| 10162995 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 74A835789-1050 | 5/9 Secondary reference The Boeing Company Div Defense |
NSN 1660-01-154-7530 is a Insulation Pipe Covering,thermal, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-154-7530 has 2 manufacturer part numbers on file: 74A835789-1068 (The Boeing Company Div Defense), 74A835789-1068 (Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems).
Key specifications for 74A835789-1068: Special Features: COGNIZANT SERVICE:NAVY; FSC APPLICATION DATA:ACFT RAM AIR EXHAUST SYSTEM; End Item Identification: AIRCRAFT MODEL F-18. 0 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 1660-01-154-7530 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.