The Impeller,fan,centrifugal, cataloged under National Stock Number 4140-00-455-9645, 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 Honeywell International Inc. Dba Honeywell Div Aerospace - Strategic Sensors. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-00-455-9645 |
| Primary Part Number | 1543970 |
| Item Name | Impeller,fan,centrifugal |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Honeywell International Inc. Dba Honeywell Div Aerospace - Strategic Sensors |
| Status | ACTIVE |
| Style Designator | MIXED FLOW SINGLE WIDTH |
| Diameter | 5.245 INCHES MINIMUM AND 5.255 INCHES MAXIMUM IN |
| Blade Quantity | 87 |
| Width | 0.666 INCHES MINIMUM AND 0.706 INCHES MAXIMUM IN |
| Material | ALUMINUM ALLOY BLADE |
| 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 |
|---|---|
| 1543970 PRIMARY | Honeywell International Inc. Dba Honeywell Div Aerospace - Strategic Sensors (USA) |
| Reference | Meaning |
|---|---|
| 1543970 | 5/9 Secondary reference Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) |
| 1543970 | 5/9 Secondary reference U.S. Government activity |
NSN 4140-00-455-9645 is a Impeller,fan,centrifugal, manufactured by Honeywell International Inc. Dba Honeywell Div Aerospace - Strategic Sensors, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-00-455-9645 has 1 manufacturer part number on file: 1543970 (Honeywell International Inc. Dba Honeywell Div Aerospace - Strategic Sensors).
Key specifications for 1543970: Style Designator: MIXED FLOW SINGLE WIDTH; Diameter: 5.245 INCHES MINIMUM AND 5.255 INCHES MAXIMUM IN; Blade Quantity: 87; Special Features: SPLINE DATA,12 TEETH,24/48 PITCH,30.0 DEG PRESSURE ANGLE,HUB MATERIAL,STEEL QQ-S-633C COMP B1112 COND ACF,CADMIUM-PLATED QQ-P-416 CL 2 TY 2. 5 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.