The Guard,fan Impeller, cataloged under National Stock Number 4140-01-256-4597, 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 Abb Motors & Mechanical Inc Div Abb Motors and Mechanical Inc.. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4140-01-256-4597 |
| Primary Part Number | 34FH4001A05 |
| Item Name | Guard,fan Impeller |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Abb Motors & Mechanical Inc Div Abb Motors and Mechanical 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 |
|---|---|
| 34FH4001A05 PRIMARY | Abb Motors & Mechanical Inc Div Abb Motors and Mechanical Inc. (USA) |
| Reference | Meaning |
|---|---|
| 00781568161586 | 5/9 Secondary reference Baldor Electric Co |
| 34-772 | 5/9 Secondary reference Baldor Electric Co |
| 34FH4001A05 | 3/9 Design control — primary reference Baldor Electric Co |
| 00781568161586 | 5/1 Secondary reference Abb Motors & Mechanical Inc Div Abb Motors and Mechanical Inc. |
NSN 4140-01-256-4597 is a Guard,fan Impeller, manufactured by Abb Motors & Mechanical Inc Div Abb Motors and Mechanical Inc., classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-256-4597 has 1 manufacturer part number on file: 34FH4001A05 (Abb Motors & Mechanical Inc Div Abb Motors and Mechanical Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5360-01-421-9512. Verify interchangeability with system specifications before substitution.
Key specifications for 34FH4001A05: Special Features: STEEL;. 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.