The Insulation,vehicular, cataloged under National Stock Number 2540-01-581-4589, is classified within Federal Supply Class 2540 (Vehicular Furniture and Accessories) of the Vehicular Equipment Components group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 2540-01-581-4589 |
| Primary Part Number | 6445933-01M1 |
| Item Name | Insulation,vehicular |
| FSC / FSG | 2540 / 25 — Vehicular Furniture and Accessories |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 6445933-01M1 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| 6445933-01M1 | Bae Systems Land & Armaments L.p. (USA) |
| 6445933-01M1 | Amz Alabama Inc. (USA) |
| Reference | Meaning |
|---|---|
| 6445933-01M1 | 5/9 Secondary reference Bae Systems Survivability Systems Llc |
NSN 2540-01-581-4589 is a Insulation,vehicular, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2540, Vehicular Furniture and Accessories. Status: active.
NSN 2540-01-581-4589 has 3 manufacturer part numbers on file: 6445933-01M1 (Caterpillar Inc Div Caterpillar Defense), 6445933-01M1 (Bae Systems Land & Armaments L.p.), 6445933-01M1 (Amz Alabama Inc.).
1 possible match (shared part number, not a government interchangeability claim): 2510-01-665-9787. Verify interchangeability with system specifications before substitution.
Key specifications for 6445933-01M1: Part Name Assigned by Controlling Agency: INSULATION, ACOUSTIAL VEHICULAR; End Item Identification: 3805-01-560-2384 GRADER, ROAD MOTERIZED. 0 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.
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.