The Radius Protractor, cataloged under National Stock Number 4920-01-075-0504, 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 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4920-01-075-0504 |
| Item Name | Radius Protractor |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Status | ACTIVE |
| General Characteristics Item Description | USED-ALTITUDE CALIBRATION OF THE ALTIMETER ASSEMBLY P/N 1629200. CONSISTS OF A 2 IN. DIA,360 DEG PROTRACTOR W/ A 2 IN. LG HOLLOW TUBE MOUNTED AT THE CENTER AND A SCREWDRIVER W/ A 2.75 IN. LG,0.078 IN. HEXAGONAL SHAFT AND A 1 IN. POINTER AT THE HANDLE END. THE PROTRACTOR TUBE IS CAPTIVE ON THE SCREWDRIVER SHAFT BUT IS FREE TO ROTATE. THE SCREWDRIVER CAN BE ROTATED ANY NUMBER OF DEG ON THE STILL PROTRACTOR 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 |
|---|---|
| 3300983-5201 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4920-01-075-0504 is a Radius Protractor, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
Key specifications for 4920-01-075-0504: General Characteristics Item Description: USED-ALTITUDE CALIBRATION OF THE ALTIMETER ASSEMBLY P/N 1629200. CONSISTS OF A 2 IN. DIA,360 DEG PROTRACTOR W/ A 2 IN. LG HOLLOW TUBE MOUNTED AT THE CENTER AND A SCREWDRIVER W/ A 2.75 IN. LG,0.078 IN. HEXAGONAL SHAFT AND A 1 IN. POINTER AT THE HANDLE END. THE PROTRACTOR TUBE IS CAPTIVE ON THE SCREWDRIVER SHAFT BUT IS FREE TO ROTATE. THE SCREWDRIVER CAN BE ROTATED ANY NUMBER OF DEG ON THE STILL PROTRACTOR IN. 1 specification is 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.