The Mount,inertial System, cataloged under National Stock Number 4920-01-024-5646, 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 L3harris Mas Inc Div L3harris Mas Inc.. Government technical data includes 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-01-024-5646 |
| Primary Part Number | 7890993-021 |
| Item Name | Mount,inertial System |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | L3harris Mas Inc Div L3harris Mas Inc. |
| Status | ACTIVE |
| Reference Data and Literature | TO 5N1-4-8-2 |
| Functional Description | SUPPORTS NAVIGATION UNIT DURING TEST. PROVIDES PRECISE ROTATION AND AIR CIRCULATION THROUGH HEAT EXCHANGERS DURING TESTING. PROVIDES ACCESS TO SIGNALS AND SIGNAL LOADS AND OTHER TEST SITUATIONS |
| 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 |
|---|---|
| 7890993-021 | L3harris Mas Inc Div L3harris Mas Inc. (CAN) |
| Reference | Meaning |
|---|---|
| 7890993-011 | 5/9 Secondary reference U.S. Government activity |
| 7890993-021 | 3/9 Design control — primary reference U.S. Government activity |
NSN 4920-01-024-5646 is a Mount,inertial System, manufactured by L3harris Mas Inc Div L3harris Mas Inc., classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-01-024-5646 has 1 manufacturer part number on file: 7890993-021 (L3harris Mas Inc Div L3harris Mas Inc.).
Key specifications for 7890993-021: Reference Data and Literature: TO 5N1-4-8-2; Functional Description: SUPPORTS NAVIGATION UNIT DURING TEST. PROVIDES PRECISE ROTATION AND AIR CIRCULATION THROUGH HEAT EXCHANGERS DURING TESTING. PROVIDES ACCESS TO SIGNALS AND SIGNAL LOADS AND OTHER TEST SITUATIONS; Part Name Assigned by Controlling Agency: INERTIAL SYSTEM MOUNT; End Item Identification: NAVIGATION UNIT 7883450-051. 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.
NSN 4920-01-024-5646 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.