The Faceplate,lens Cell, cataloged under National Stock Number 4920-00-312-0184, 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 3 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4920-00-312-0184 |
| Item Name | Faceplate,lens Cell |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM ALLOY AND PLATE GLASS,ANODIZED FINISH,APPROX5.440 IN. DIA,0.412 IN. H IN |
| Reference Data and Literature | SERD NO. 1672 |
| Functional Description | USED TO PROVIDE THE CAPABILITY TO DETERMINE PARALLAX REQUIREMENTS OF THE HUD DISPLAY UNIT OPTICAL SYSTEM, BY PROVIDING AN IMAGE PLANE TO WHICH PARALLAX IS MEASURED |
| 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 |
|---|---|
| AFA05A0204-3TD | 3/9 Design control — primary reference Mcdonnell Douglas Corp Mcdonnell Douglas Electronic Systems Co |
NSN 4920-00-312-0184 is a Faceplate,lens Cell, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
Key specifications for 4920-00-312-0184: General Characteristics Item Description: ALUMINUM ALLOY AND PLATE GLASS,ANODIZED FINISH,APPROX5.440 IN. DIA,0.412 IN. H IN; Reference Data and Literature: SERD NO. 1672; Special Features: COMPANY ITEM NAME-FACEPLATE, MASTER-CATHODE RAY TUBE; Functional Description: USED TO PROVIDE THE CAPABILITY TO DETERMINE PARALLAX REQUIREMENTS OF THE HUD DISPLAY UNIT OPTICAL SYSTEM, BY PROVIDING AN IMAGE PLANE TO WHICH PARALLAX IS MEASURED. 3 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.