The Insulation,thermal,aircraft, cataloged under National Stock Number 1560-01-424-1663, is classified within Federal Supply Class 1560 (Airframe Structural Components) of the Aircraft and Airframe Components group. The manufacturer of record is Forrest Machining Llc Dba Fmi Aerostructures. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 1560-01-424-1663 |
| Primary Part Number | DAA3420D129-335 |
| Item Name | Insulation,thermal,aircraft |
| FSC / FSG | 1560 / 15 — Airframe Structural Components |
| Manufacturer | Forrest Machining Llc Dba Fmi Aerostructures |
| Status | ACTIVE |
| Criticality Code Justification | FEAT |
| Aircraft Location | INSUL-RECESSED, FIXED TE, INBD |
| Material | CERAMIC |
| Aircraft Mission Design Series | B-2 |
| Thickness | 3.600 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL P — Demil Prior To Sale/Transfer |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| DAA3420D129-285 | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems (USA) |
| DAA3420D129-335 | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems (USA) |
| DAA3420D129-335 PRIMARY | Forrest Machining Llc Dba Fmi Aerostructures (USA) |
| Reference | Meaning |
|---|---|
| DAA3420D129-285 | 5/9 Secondary reference Forrest Machining Llc Dba Fmi Aerostructures |
NSN 1560-01-424-1663 is a Insulation,thermal,aircraft, manufactured by Forrest Machining Llc Dba Fmi Aerostructures, classified under FSC 1560, Airframe Structural Components. Status: active.
NSN 1560-01-424-1663 has 3 manufacturer part numbers on file: DAA3420D129-285 (Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems), DAA3420D129-335 (Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems), DAA3420D129-335 (Forrest Machining Llc Dba Fmi Aerostructures).
Key specifications for DAA3420D129-335: Criticality Code Justification: FEAT; Overall Length: 10.000 INCHES NOMINAL IN; Overall Width: 10.000 INCHES NOMINAL IN; Special Features: LOW OBSERVABLE CRITICAL ITEM; MATL: TILE; CERAMIC INSUL SPEC PERFORMANCE, MS-574; OPP -286; DIMENSIONS LISTED ARE STOCK SIZE. 5 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 1560-01-424-1663 has DEMIL Code P. 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.