The Test Set,optical, cataloged under National Stock Number 4920-01-074-4073, 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 Lockheed Martin Corp Electronics and Missiles Div. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-01-074-4073 |
| Primary Part Number | 143377 |
| Item Name | Test Set,optical |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Lockheed Martin Corp Electronics and Missiles Div |
| Status | ACTIVE |
| General Characteristics Item Description | CONSISTS OF COLLIMATOR,THREE TEST MODULES,LASER MEASUREMENT MODULE AND SAFETY HOOD,ANT MINIMUM RESOLVABLE TEMPERATURE DIFFERENCE TEST EQUIPMENT |
| Reference Data and Literature | T.O. 33DA-114-12-1 |
| 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 |
|---|---|
| 143377 PRIMARY | Lockheed Martin Corp Electronics and Missiles Div (USA) |
| Reference | Meaning |
|---|---|
| AN/ASM-632 | 5/2 Secondary reference U.S. Government activity |
NSN 4920-01-074-4073 is a Test Set,optical, manufactured by Lockheed Martin Corp Electronics and Missiles Div, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-01-074-4073 has 1 manufacturer part number on file: 143377 (Lockheed Martin Corp Electronics and Missiles Div).
Key specifications for 143377: General Characteristics Item Description: CONSISTS OF COLLIMATOR,THREE TEST MODULES,LASER MEASUREMENT MODULE AND SAFETY HOOD,ANT MINIMUM RESOLVABLE TEMPERATURE DIFFERENCE TEST EQUIPMENT; Reference Data and Literature: T.O. 33DA-114-12-1; End Item Identification: AN/AVQ-26 TARGET DESIGNATOR SET PAVE TACK. 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 4920-01-074-4073 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.