The Impeller and Shaft, cataloged under National Stock Number 4140-01-370-8758, 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 Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4140-01-370-8758 |
| Primary Part Number | RC-201466122 AND RC-201466122S |
| Item Name | Impeller and Shaft |
| FSC / FSG | 4140 / 41 — Fans, Air Circulators, and Blower Equipment |
| Manufacturer | Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL SHAFT |
| Material | STEEL |
| 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 |
|---|---|
| 864-720-023 ITEM 13 | Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots (USA) |
| RC-201466122 AND RC-201466122S | Best Blower Sales & Service Llc (USA) |
| RC-201466122 AND RC-201466122S PRIMARY | Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots (USA) |
| Reference | Meaning |
|---|---|
| 865-005-S22 | 5/9 Secondary reference Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots |
NSN 4140-01-370-8758 is a Impeller and Shaft, manufactured by Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
NSN 4140-01-370-8758 has 3 manufacturer part numbers on file: 864-720-023 ITEM 13 (Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots), RC-201466122 AND RC-201466122S (Best Blower Sales & Service Llc), RC-201466122 AND RC-201466122S (Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots).
Key specifications for RC-201466122 AND RC-201466122S: General Characteristics Item Description: STEEL SHAFT; End Item Identification: BLOWER,ROOTS CORPORATION,MODEL 22U-RAI; Material: STEEL. 2 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.