The Tool,installation,a, cataloged under National Stock Number 4920-01-489-5461, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-01-489-5461 |
| Item Name | Tool,installation,a |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Status | ACTIVE |
| Model Number | 218 |
| Overall Diameter | 0.50 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| CUTA2180203A | 3/2 Design control — primary reference U.S. Government activity |
NSN 4920-01-489-5461 is a Tool,installation,a, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
Key specifications for 4920-01-489-5461: Model Number: 218; Overall Diameter: 0.50 INCHES NOMINAL IN; Overall Length: 6.40 INCHES NOMINAL IN; Special Features: TOOL SET CONTAINS A BODY TOOL, PIN EXTRACTION TOOL, A PIN INSTALLATION TOOL, AND A STRIKER. THE THREE TOOLS ARE THREADED AT THE END TO ENGAGE INTERNAL THREADS OF THE PIN OR THE RESTRICTOR AS REQUIRED. THE STRIKER SLIDES ON THE SHAFT OF EITHER OF THE FIRST TWO TOOLS AND IS USED TO STRIKE THE HEAD, THUS DRIVING OUT THE RESTRIKER BODY. THE BODY TOOL IS ALSO USED TO PUSH THE RFI RESTRIKER INSERT FIRMLY INTO THE REAMED BORE OF THE MANIFOLD. THE PIN INSTALLATION TOOL IS THEN USED TO PRESS THE EXPANDER PIN INTO THE RESTRIKER BODY SO THAT THE EXTERNAL LANDS BITE INTO THE CAVITY WALL TO SEAL AND LOCK THE INSERT IN PLACE.. 2 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.
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.