The Guard,fan Impeller, cataloged under National Stock Number 4140-01-157-5471, 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 Raytheon Company Div Rmd Strategic. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4140-01-157-5471 |
| Primary Part Number | 734128-1 |
| Item Name | Guard,fan Impeller |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Raytheon Company Div Rmd Strategic |
| 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 |
|---|---|
| 734128-1 | Raytheon Company Div Rmd Strategic (USA) |
| Reference | Meaning |
|---|---|
| 550648 | 5/9 Secondary reference U.S. Government activity |
| 550648 | 3/9 Design control — primary reference Comair Rotron Inc Sub of Kl Industries Inc |
NSN 4140-01-157-5471 is a Guard,fan Impeller, manufactured by Raytheon Company Div Rmd Strategic, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-157-5471 has 1 manufacturer part number on file: 734128-1 (Raytheon Company Div Rmd Strategic).
Key specifications for 734128-1: Special Features: GLASS REINFORCED POLYCARBONATE;RECTANGULAR PATTERN;SIX .20 IN.DIA STRIPS ON 1.26 IN.DIA CENTER OF SURFACE PLANE;3.140 IN.SQ;2.812 IN.INSIDE VENTURI; .12 IN.THK; IN; End Item Identification: DESIGNED FOR USE ON SPRITE,SPRITE DC FAN. 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.