The Rotor Assembly,blower L H, cataloged under National Stock Number 2990-01-058-4917, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Rolls-Royce Solutions America Inc. Government technical data includes 1 specification, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-058-4917 |
| Primary Part Number | 5144779 |
| Item Name | Rotor Assembly,blower L H |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Rolls-Royce Solutions America Inc |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM ALLOY;ROTOR BODY;STEEL,SHAFT AND ROTOR PLUGS;EXTERNALLY SERRATED SHAFT ONE;1.000 IN. SERATION LG;2.250 SHAFT LG;1.000 IN. DIA;INTERNALLY SERRATED SHAFT OTHER END;0.825 IN. DEEP;0.675 IN. MINOR DIA;0.750 IN. MAJOR DIA;1.000 IN. OD;1.125 IN. SHAFT LG;19.250 IN. O/A LG;5.812 IN. O/A OD IN |
| 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 |
|---|---|
| 5144779 PRIMARY | Rolls-Royce Solutions America Inc (USA) |
NSN 2990-01-058-4917 is a Rotor Assembly,blower L H, manufactured by Rolls-Royce Solutions America Inc, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-058-4917 has 1 manufacturer part number on file: 5144779 (Rolls-Royce Solutions America Inc).
Key specifications for 5144779: General Characteristics Item Description: ALUMINUM ALLOY;ROTOR BODY;STEEL,SHAFT AND ROTOR PLUGS;EXTERNALLY SERRATED SHAFT ONE;1.000 IN. SERATION LG;2.250 SHAFT LG;1.000 IN. DIA;INTERNALLY SERRATED SHAFT OTHER END;0.825 IN. DEEP;0.675 IN. MINOR DIA;0.750 IN. MAJOR DIA;1.000 IN. OD;1.125 IN. SHAFT LG;19.250 IN. O/A LG;5.812 IN. O/A OD IN. 1 specification is 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.