The Crankcase Heater, cataloged under National Stock Number 4540-01-038-9795, is classified within Federal Supply Class 4540 (Waste Disposal Equipment) of the Plumbing, Heating, and Waste Disposal group. The manufacturer of record is Johnson Controls Navy Systems, Llc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4540-01-038-9795 |
| Primary Part Number | 25-9422 |
| Item Name | Crankcase Heater |
| FSC / FSG | 4540 / 45 — Waste Disposal Equipment |
| Manufacturer | Johnson Controls Navy Systems, Llc |
| Status | ACTIVE |
| General Characteristics Item Description | 120 VOLT,300 WATT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 25-9422 PRIMARY | Johnson Controls Navy Systems, Llc (USA) |
| Reference | Meaning |
|---|---|
| 025-09422 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 4540-01-038-9795 is a Crankcase Heater, manufactured by Johnson Controls Navy Systems, Llc, classified under FSC 4540, Waste Disposal Equipment. Status: active.
NSN 4540-01-038-9795 has 1 manufacturer part number on file: 25-9422 (Johnson Controls Navy Systems, Llc).
1 possible match (shared part number, not a government interchangeability claim): 4130-01-203-1099. Verify interchangeability with system specifications before substitution.
Key specifications for 25-9422: General Characteristics Item Description: 120 VOLT,300 WATT. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.