The Insulation Blanket,thermal,aircr, cataloged under National Stock Number 1660-01-573-7500, 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. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-573-7500 |
| Primary Part Number | 123AB40351-603 |
| Item Name | Insulation Blanket,thermal,aircr |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Maximum Thermal Conductivity | NOT RATED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 123AB40351-603 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 123AB40351-603 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 1660-01-573-7500 is a Insulation Blanket,thermal,aircr, manufactured by Northrop Grumman Systems Corporation, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-573-7500 has 1 manufacturer part number on file: 123AB40351-603 (Northrop Grumman Systems Corporation).
Key specifications for 123AB40351-603: Maximum Thermal Conductivity: NOT RATED; Special Features: MATERIAL FOR -11 IS NONPOROUS VINYL CLOTH HEADLINER PER SPEC MIL-C-7514 TYPE II EIGH SEVEN AND ONE HALF OUNCES PER SQUARE YARD FLAME PROOF AND PERFORATED .057 DIA BY THIRTEEN THIRTY SECONDS DIAGONAL SPACING;COLOR DARK GULL GRAY PER FED STD 595; Part Name Assigned by Controlling Agency: BLANKET ASSEMBLY; End Item Identification: C2A. 1 specification is 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 1660-01-573-7500 has DEMIL Code B. 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.