The Impeller and Shaft Driven Assemb, cataloged under National Stock Number 4140-00-787-4443, is classified within Federal Supply Class 4140 (No Item Name Available) of the Refrigeration, AC, and Air Circulating Equipment group. The primary manufacturer of record is Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4140-00-787-4443 |
| Primary Part Number | 823-149-021 |
| Item Name | Impeller and Shaft Driven Assemb |
| FSC / FSG | 4140 / 41 — No Item Name Available |
| Manufacturer | Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots |
| Status | ACTIVE |
| General Characteristics Item Description | SHORT SHAFT COMPONENT OF MATCHING SET; POSITIVE DISPLACEMENT DESIGN; CW TO R CCW ROTATION; DUCTILE IRON IMPELLER; FIGURE EIGHT CONFIGURATION; 80 PERCENT INVOLUTE; NOM 3.992 IN. FROM TIP OF LOBE TO TIP OF LOBE ACROSS AXIAL CENTER; 1.773 IN. WIDTH OF LOBES AT MAX. POINT OF INVOLUTE; 1.993 IN. LG OF FACE PARALLEL TOSHAFT AXIS; 15/16 IN. DIA CORE HOLE EA LOBE CENTERED ON 2.5 IN. PITCH DIA CIRCLE CONCENTRIC TO SHAFT CENTER; SECURED TO SHAFT W/NO. 3 TAPER PIN; STAINLESS STEEL SHAFT; STEPPED AND GROOVED; 5-7/8 IN. LG O/A; FIRST END 0.5909 IN. DIA 4-5/8 LG TO GROOVE; 0.46 IN. RADIUS GROOVE 0.010 IN. DEEP; REMAINING LG STEPPED TO 0.5890 FINISHED DIA; DRILLED AND REAMED FOR NO. 4 TAPER PIN APPROX 3/8 IN FROM FINISHED END; IMPELLER MTD W/FACE POSITIONED Z-13/16 IN. FROM FINISHED END IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 823-149-021 PRIMARY | Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots (USA) |
| 23149 | Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots (USA) |
| 24087PC22 | Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots (USA) |
NSN 4140-00-787-4443 is a Impeller and Shaft Driven Assemb, manufactured by Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots, classified under FSC 4140 (No Item Name Available). Status: active.
NSN 4140-00-787-4443 has 3 cross-referenced part numbers: 823-149-021 (Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots), 23149 (Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots), 24087PC22 (Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots).
There are 2 known substitutes for 4140-00-787-4443: 5935-00-920-1362, 3040-01-197-8889. Verify interchangeability with system specifications before substitution.
Key specifications for 823-149-021: General Characteristics Item Description: SHORT SHAFT COMPONENT OF MATCHING SET; POSITIVE DISPLACEMENT DESIGN; CW TO R CCW ROTATION; DUCTILE IRON IMPELLER; FIGURE EIGHT CONFIGURATION; 80 PERCENT INVOLUTE; NOM 3.992 IN. FROM TIP OF LOBE TO TIP OF LOBE ACROSS AXIAL CENTER; 1.773 IN. WIDTH OF LOBES AT MAX. POINT OF INVOLUTE; 1.993 IN. LG OF FACE PARALLEL TOSHAFT AXIS; 15/16 IN. DIA CORE HOLE EA LOBE CENTERED ON 2.5 IN. PITCH DIA CIRCLE CONCENTRIC TO SHAFT CENTER; SECURED TO SHAFT W/NO. 3 TAPER PIN; STAINLESS STEEL SHAFT; STEPPED AND GROOVED; 5-7/8 IN. LG O/A; FIRST END 0.5909 IN. DIA 4-5/8 LG TO GROOVE; 0.46 IN. RADIUS GROOVE 0.010 IN. DEEP; REMAINING LG STEPPED TO 0.5890 FINISHED DIA; DRILLED AND REAMED FOR NO. 4 TAPER PIN APPROX 3/8 IN FROM FINISHED END; IMPELLER MTD W/FACE POSITIONED Z-13/16 IN. FROM FINISHED END IN; End Item Identification: BATTERY IGNITION BLOWER NO. 22,DRESSER INDUSTRIES INC.,ROOTS BLOWER AND VACUUM PUMP DIV,TYPE AF. 2 total characteristics are documented in the Federal Logistics Information System.