The Heater,vehicular,compartment, cataloged under National Stock Number 2540-00-536-2641, is classified within Federal Supply Class 2540 (Vehicular Furniture and Accessories) of the Vehicular Equipment Components group. The manufacturer of record is Grimes Aerospace Company. Government technical data includes 9 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 2540-00-536-2641 |
| Primary Part Number | B39B81 |
| Item Name | Heater,vehicular,compartment |
| FSC / FSG | 2540 / 25 — Vehicular Furniture and Accessories |
| Manufacturer | Grimes Aerospace Company |
| Status | ACTIVE |
| Current Type | DC |
| Heat Medium Type | HOT WATER |
| Voltage in Volts | 24.0 |
| Heat Outlet Quantity | 1 |
| Height | 32.520 INCHES NOMINAL IN |
| Width | 23.030 INCHES NOMINAL IN |
| Mounting Type | FLOOR SURFACE, FREE STANDING, NONDUCTED |
| Heating Element Type | HOT WATER COIL AND STEAM COIL |
| Operating Control Type | HAND SWITCH |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| B39B81 PRIMARY | Grimes Aerospace Company (USA) |
| Reference | Meaning |
|---|---|
| 800E1011 | 5/9 Secondary reference Kersey / American Lafrance a Div of Figgie International Inc |
NSN 2540-00-536-2641 is a Heater,vehicular,compartment, manufactured by Grimes Aerospace Company, classified under FSC 2540, Vehicular Furniture and Accessories. Status: active.
NSN 2540-00-536-2641 has 1 manufacturer part number on file: B39B81 (Grimes Aerospace Company).
Key specifications for B39B81: Current Type: DC; Heat Medium Type: HOT WATER; Voltage in Volts: 24.0; Heat Outlet Quantity: 1. 9 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.