The Fixture,engine Maintenance,aircr, cataloged under National Stock Number 4920-01-494-5224, 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 Stein Seal Company. 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 | 4920-01-494-5224 |
| Primary Part Number | SSCY4558-AY |
| Item Name | Fixture,engine Maintenance,aircr |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Stein Seal Company |
| Status | ACTIVE |
| Nominal Overall Diameter | 3.000 INCHES IN |
| Nominal Overall Width | 3.000 INCHES IN |
| Specific Usage Design | DURING REPAIR OF THE NO. 3 CARBON SEAL, IT IS NECESSARY TO DISASSEMBLE THE CARBON SEAL TO INSPECT THE CARBON SEAL HOUSING FOR FLATNESS AND THE CARBON SEAL SEGMENTS FOR CRACKS AND WEAR |
| Functional Description | NECESSARY TO ASSEMBLE THE COMPONENTS OF THE NO. 3 CARBON SEAL TO THE CARBON SEAL HOUSING |
| 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 |
|---|---|
| SSCY4558-AY PRIMARY | Stein Seal Company (USA) |
NSN 4920-01-494-5224 is a Fixture,engine Maintenance,aircr, manufactured by Stein Seal Company, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-01-494-5224 has 1 manufacturer part number on file: SSCY4558-AY (Stein Seal Company).
Key specifications for SSCY4558-AY: Nominal Overall Diameter: 3.000 INCHES IN; Nominal Overall Width: 3.000 INCHES IN; Specific Usage Design: DURING REPAIR OF THE NO. 3 CARBON SEAL, IT IS NECESSARY TO DISASSEMBLE THE CARBON SEAL TO INSPECT THE CARBON SEAL HOUSING FOR FLATNESS AND THE CARBON SEAL SEGMENTS FOR CRACKS AND WEAR; Functional Description: NECESSARY TO ASSEMBLE THE COMPONENTS OF THE NO. 3 CARBON SEAL TO THE CARBON SEAL HOUSING. 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 4920-01-494-5224 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.