The Heater,aircraft Engine Maintenan, cataloged under National Stock Number 4920-00-508-9173, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 3 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-00-508-9173 |
| Primary Part Number | PWA57397 |
| Item Name | Heater,aircraft Engine Maintenan |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Overall Diameter | 20.000 INCHES NOMINAL IN |
| Reference Data and Literature | 2J-F100-94; SERD NO. 1522; T.O. 33D4-6-511-1 |
| Functional Description | USED DURING 1ST STAGE TURBINE DISK RETURN PLATE SNAP DIAMETER REPAIRS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| PWA57397 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| PWA52374 | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
NSN 4920-00-508-9173 is a Heater,aircraft Engine Maintenan, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-00-508-9173 has 1 manufacturer part number on file: PWA57397 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for PWA57397: Overall Diameter: 20.000 INCHES NOMINAL IN; Reference Data and Literature: 2J-F100-94; SERD NO. 1522; T.O. 33D4-6-511-1; Overall Length: 8.000 INCHES NOMINAL IN; Functional Description: USED DURING 1ST STAGE TURBINE DISK RETURN PLATE SNAP DIAMETER REPAIRS. 3 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 4920-00-508-9173 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.