The Fixture,machining,aircraft Engin, cataloged under National Stock Number 4920-01-291-7311, 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 4 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-01-291-7311 |
| Primary Part Number | PWA57711 |
| Item Name | Fixture,machining,aircraft Engin |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Nominal Overall Diameter | 31.000 INCHES IN |
| Reference Data and Literature | SERD NO. 5852; T.O. 2J-F100-94 |
| Nominal Overall Height | 1.000 INCHES IN |
| Functional Description | USED TO SUPPORT AND ALIGN THE LPTCASE DUCT SET IN THE SEAL GRINDING MACHINE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| PWA57711 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
NSN 4920-01-291-7311 is a Fixture,machining,aircraft Engin, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-01-291-7311 has 1 manufacturer part number on file: PWA57711 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for PWA57711: Nominal Overall Diameter: 31.000 INCHES IN; Reference Data and Literature: SERD NO. 5852; T.O. 2J-F100-94; Nominal Overall Height: 1.000 INCHES IN; Special Features: C/O STEEL RING 31.000 IN. O.D. AND 25.000 IN. I.D. AND 1.000 IN. THK; THIS RING SUPPORTS THE FWD FLANGE OF THE CASE DUCT SET AND PROPERLY ALIGNS THE CASE DUCT SET IN THE SEGMENT GRIND MACHINE. A SECOND STEEL RING,33.200 IN. O.D.,24.500 IN. I.D. AND 0.700 IN. THK CLAMPS TO AND SUPPORTS THE REAR FLANGE. SECOND RING IS EQUIPPED W/6 THD RODS WHICH PRESS A THIRD STEEL RING,25.800 IN. O.D.,25.000 IN. I.D. AND 0.750 IN. THK AGAINST THE AFT FACE OF THE TIP SEGMENTS FORCING THE SEGMENTS AGAINST THE FIRST TOOLING RING TO MAINTAIN THEIR PROPER POSITIONING DURING THE GRIND OPERATION 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 4920-01-291-7311 has DEMIL Code B. 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.