The Blower,air Barrier, cataloged under National Stock Number 4140-01-421-3981, 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 Howden American Fan Company Dba American Fan Co Div Howden Usa Company. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-421-3981 |
| Primary Part Number | AF-9 FAN 1015WHEEL,5/8 BORE |
| Item Name | Blower,air Barrier |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Howden American Fan Company Dba American Fan Co Div Howden Usa Company |
| Status | ACTIVE |
| Phase | THREE |
| Frequency Rating | 60.0 HERTZ NOMINAL |
| Material | ALUMINUM |
| Voltage Rating | 230.0 VOLTS NOMINAL |
| 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 |
|---|---|
| AF-9 FAN 1015WHEEL,5/8 BORE PRIMARY | Howden American Fan Company Dba American Fan Co Div Howden Usa Company (USA) |
| Reference | Meaning |
|---|---|
| 1735M51P01 | 7/2 Vendor item drawing reference General Electric Co |
NSN 4140-01-421-3981 is a Blower,air Barrier, manufactured by Howden American Fan Company Dba American Fan Co Div Howden Usa Company, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-421-3981 has 1 manufacturer part number on file: AF-9 FAN 1015WHEEL,5/8 BORE (Howden American Fan Company Dba American Fan Co Div Howden Usa Company).
Key specifications for AF-9 FAN 1015WHEEL,5/8 BORE: Phase: THREE; Special Features: 56C FRAME,3600 RPM,TEXP MOTOR & 1015 CAST ALUMINUM WHEEL WITH 5/8 BORE RPM; Frequency Rating: 60.0 HERTZ NOMINAL; Material: ALUMINUM. 4 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.