The Support,compressor Component,air, cataloged under National Stock Number 2840-00-340-7434, is classified within Federal Supply Class 2840 (Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 2840-00-340-7434 |
| Primary Part Number | 4026740 |
| Item Name | Support,compressor Component,air |
| FSC / FSG | 2840 / 28 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Mounting Hole Quantity | 4 |
| Criticality Code Justification | FEAT |
| Mounting Hole Diameter | 0.276 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN |
| Material | TITANIUM ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 4026740 | Rtx Corporation Div Pratt & Whitney (USA) |
| 4026740 | Whitcraft Llc Dba Pursuit Aerospace (USA) |
| 4026740 | Paramount Machine Company, Inc. Dba Paramount Machine Co Inc (USA) |
| 4026740 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 4026740 | 5/9 Secondary reference Condor Industries, Llc Dba Empire Manufacturing |
| 4026740 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
NSN 2840-00-340-7434 is a Support,compressor Component,air, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 2840, Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components. Status: active.
NSN 2840-00-340-7434 has 4 manufacturer part numbers on file: 4026740 (Rtx Corporation Div Pratt & Whitney), 4026740 (Whitcraft Llc Dba Pursuit Aerospace), 4026740 (Paramount Machine Company, Inc. Dba Paramount Machine Co Inc), 4026740 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 4026740: Mounting Hole Quantity: 4; Criticality Code Justification: FEAT; Mounting Hole Diameter: 0.276 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN; Overall Length: 0.920 INCHES MINIMUM AND 0.930 INCHES MAXIMUM IN. 4 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.
NSN 2840-00-340-7434 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.