The Impeller,fan,axial, cataloged under National Stock Number 4140-01-570-3687, 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 Air Turbine Propeller Co. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-01-570-3687 |
| Primary Part Number | S-20-11-HD 7/8 DIA |
| Item Name | Impeller,fan,axial |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Air Turbine Propeller Co |
| 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 |
|---|---|
| 406038 | Asco Power Services Inc Dba Asco Emergency Power Maintenance Incorporated (USA) |
| S-20-11-HD 7/8 DIA PRIMARY | Air Turbine Propeller Co (USA) |
NSN 4140-01-570-3687 is a Impeller,fan,axial, manufactured by Air Turbine Propeller Co, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-570-3687 has 2 manufacturer part numbers on file: 406038 (Asco Power Services Inc Dba Asco Emergency Power Maintenance Incorporated), S-20-11-HD 7/8 DIA (Air Turbine Propeller Co).
Key specifications for S-20-11-HD 7/8 DIA: End Item Identification: MRAP. 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.