The Heater,vehicular,compartment, cataloged under National Stock Number 2540-00-191-0665, is classified within Federal Supply Class 2540 (Vehicular Furniture and Accessories) of the Vehicular Equipment Components group. The manufacturer of record is Fwd Seagrave Holdings Lp. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Heater,vehicular,compartment |
| FSC / FSG | 2540 — Vehicular Furniture and Accessories (FSG 25) |
| Manufacturers | Fwd Seagrave Holdings Lp (CAGE 23382) |
| Parameter | Value |
|---|---|
| NSN | 2540-00-191-0665 |
| Primary Part Number | ES27 |
| Item Name | Heater,vehicular,compartment |
| FSC / FSG | 2540 / 25 — Vehicular Furniture and Accessories |
| Manufacturer | Fwd Seagrave Holdings Lp |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| ES27 PRIMARY | Fwd Seagrave Holdings Lp (USA) |
| Reference | Meaning |
|---|---|
| 431472C1 | 5/2 Secondary reference U.S. Government activity |
NSN 2540-00-191-0665 is a Heater,vehicular,compartment, manufactured by Fwd Seagrave Holdings Lp, classified under FSC 2540, Vehicular Furniture and Accessories. Status: active.
NSN 2540-00-191-0665 has 1 manufacturer part number on file: ES27 (Fwd Seagrave Holdings Lp).
1 possible match (shared part number, not a government interchangeability claim): 5977-01-442-8633. Verify interchangeability with system specifications before substitution.
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.