The Adapter and Screen Assembly, cataloged under National Stock Number 1680-01-021-3487, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories 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1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-01-021-3487 |
| Item Name | Adapter and Screen Assembly |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Status | ACTIVE |
| General Characteristics Item Description | 5.9 IN. OD,3.312 IN. NOM LG IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 431-51-3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1680-01-021-3487 is a Adapter and Screen Assembly, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6110-01-602-9171. Verify interchangeability with system specifications before substitution.
Key specifications for 1680-01-021-3487: General Characteristics Item Description: 5.9 IN. OD,3.312 IN. NOM LG 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.
NSN 1680-01-021-3487 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.