The Fan,tubeaxial, cataloged under National Stock Number 4140-01-226-9670, 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 Lockheed Martin Corporation Div Rotary and Mission Systems. Government technical data includes 6 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-226-9670 |
| Primary Part Number | 63A146387P1 |
| Item Name | Fan,tubeaxial |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Lockheed Martin Corporation Div Rotary and Mission Systems |
| Status | ACTIVE |
| Inclosure Type | FULLY INCLOSED |
| Surface Treatment Document and Classification | TT-E-489 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Drive Type | DIRECT |
| Surface Treatment | ENAMEL OVERALL |
| Material | ALUMINUM ALLOY OVERALL |
| Prime Mover Type | ELECTRIC MOTOR |
| 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 |
|---|---|
| 63A146387P1 | Lockheed Martin Corporation Div Rotary and Mission Systems (USA) |
| Reference | Meaning |
|---|---|
| MIL 901-1790YF | 5/9 Secondary reference U.S. Government activity |
| ML9FM115ACN1790 YF | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 034703 | 5/2 Secondary reference U.S. Government activity |
| 034703000 | 3/2 Design control — primary reference U.S. Government activity |
| MIL 901-FL 1790YF | 5/1 Secondary reference U.S. Government activity |
NSN 4140-01-226-9670 is a Fan,tubeaxial, manufactured by Lockheed Martin Corporation Div Rotary and Mission Systems, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-226-9670 has 1 manufacturer part number on file: 63A146387P1 (Lockheed Martin Corporation Div Rotary and Mission Systems).
2 possible matches (shared part number, not a government interchangeability claim): 4140-01-327-6264, 6750-01-429-1430. Verify interchangeability with system specifications before substitution.
Key specifications for 63A146387P1: Inclosure Type: FULLY INCLOSED; Surface Treatment Document and Classification: TT-E-489 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Drive Type: DIRECT; Surface Treatment: ENAMEL OVERALL. 6 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.