The Calibration Unit,cable, cataloged under National Stock Number 4920-01-307-7441, 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 Group Four Transducers Inc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-01-307-7441 |
| Primary Part Number | 623553-4 |
| Item Name | Calibration Unit,cable |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Group Four Transducers Inc |
| Status | ACTIVE |
| FSC Application Data | SPECIALIZED GROUND SERVICE EQUIPMENT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 623553-4 PRIMARY | Group Four Transducers Inc (USA) |
| Reference | Meaning |
|---|---|
| 460653-1 | 5/9 Secondary reference Vishay Blh Inc. Dba Blh Electronics |
| 623553-2 | 5/2 Secondary reference U.S. Government activity |
| CK-10K | C/1 Advisory reference — outside the item-of-supply concept Eagle Microsystems Div of Letronix Inc |
| 623553-3 | 3/2 Design control — primary reference U.S. Government activity |
| 623553-4 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4920-01-307-7441 is a Calibration Unit,cable, manufactured by Group Four Transducers Inc, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-01-307-7441 has 1 manufacturer part number on file: 623553-4 (Group Four Transducers Inc).
Key specifications for 623553-4: FSC Application Data: SPECIALIZED GROUND SERVICE EQUIPMENT. 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.