The Guard,fan Impeller, cataloged under National Stock Number 4140-01-013-0518, is classified within Federal Supply Class 4140 (Fans, Air Circulators, and Blower Equipment) of the Refrigeration, AC, and Air Circulating Equipment group. The manufacturer of record is Curtiss-Wright Controls Integrated Sensing, Inc.. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4140-01-013-0518 |
| Primary Part Number | 055018 |
| Item Name | Guard,fan Impeller |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Curtiss-Wright Controls Integrated Sensing, Inc. |
| Status | ACTIVE |
| 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 |
|---|---|
| 055018 PRIMARY | Curtiss-Wright Controls Integrated Sensing, Inc. (USA) |
| 055018 | Nmb Technologies Corporation Div Advanced Electronics Engineering (USA) |
| Reference | Meaning |
|---|---|
| 84001920-002 | 7/2 Vendor item drawing reference U.S. Government activity |
| 055018 | 5/9 Secondary reference Imc Magnetics Corp New Hampshire Div |
| 055016 | 5/9 Secondary reference Imc Magnetics Corp New Hampshire Div |
| 055007 | 5/9 Secondary reference Imc Magnetics Corp New Hampshire Div |
NSN 4140-01-013-0518 is a Guard,fan Impeller, manufactured by Curtiss-Wright Controls Integrated Sensing, Inc., classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-013-0518 has 2 manufacturer part numbers on file: 055018 (Curtiss-Wright Controls Integrated Sensing, Inc.), 055018 (Nmb Technologies Corporation Div Advanced Electronics Engineering).
1 possible match (shared part number, not a government interchangeability claim): 6525-01-155-0523. Verify interchangeability with system specifications before substitution.
Key specifications for 055018: Special Features: CARBON STEEL,ZINC PLATED FINISH,FINGER PROTECTING TYPE;; End Item Identification: IMC MAGNETICS PEWEE BOXER FAN. 0 specifications are 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.