The Ventilator,air Circulating, cataloged under National Stock Number 2540-01-551-4235, 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 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 2540-01-551-4235 |
| Primary Part Number | 146-6371 |
| Item Name | Ventilator,air Circulating |
| 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 |
|---|---|
| 146-6371 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| Reference | Meaning |
|---|---|
| 146-6371 | 5/9 Secondary reference Caterpillar of Australia Pty Ltd |
NSN 2540-01-551-4235 is a Ventilator,air Circulating, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2540, Vehicular Furniture and Accessories. Status: active.
NSN 2540-01-551-4235 has 1 manufacturer part number on file: 146-6371 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 146-6371: Special Features: PART OF P/N 222-6977 ROPS AR; Part Name Assigned by Controlling Agency: LOUVER ASSEMBLY; End Item Identification: PART NUMBER 222-6978, OPERATOR SYSTEM, CAB AR-ENCLOSED ROPS-WITH BRUSH GUARDS. 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.