The Reservoir,window Washer, cataloged under National Stock Number 2540-01-551-7709, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2540-01-551-7709 |
| Primary Part Number | 155-4774 |
| Item Name | Reservoir,window Washer |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 155-4774 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| Reference | Meaning |
|---|---|
| 155-4774 | 5/9 Secondary reference Caterpillar of Australia Pty Ltd |
NSN 2540-01-551-7709 is a Reservoir,window Washer, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2540, Vehicular Furniture and Accessories. Status: active.
NSN 2540-01-551-7709 has 1 manufacturer part number on file: 155-4774 (Caterpillar Inc Div Caterpillar Defense).
1 possible match (shared part number, not a government interchangeability claim): 6515-01-683-8899. Verify interchangeability with system specifications before substitution.
Key specifications for 155-4774: Special Features: NEXT ASSEMBLY WINDOW WIPER AND WASHER GROUP P/N 143-5916; PART OF CAB AR P/N 203-9778, OPERATOR STATION; End Item Identification: VIBRATORY SOIL COMPACTOR, CS563E. 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.