The Horn Assembly,relief, cataloged under National Stock Number 1680-00-485-2834, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Woodland Plastics Corp.. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 1680-00-485-2834 |
| Primary Part Number | 20248-1 |
| Item Name | Horn Assembly,relief |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Woodland Plastics Corp. |
| Status | ACTIVE |
| General Characteristics Item Description | CELLULOSE ACETATE BUTYRATE,8.625 IN. LG,INCLUDES HORN,LEVER,VALVE ROD,SPRING,SHORT AXEL PIN,LONG AXEL PIN IN |
| 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 |
|---|---|
| WM203 | Smith and Smith Aircraft Co (USA) |
| 20248-1 PRIMARY | Woodland Plastics Corp. (USA) |
| Reference | Meaning |
|---|---|
| WM203 | 5/9 Secondary reference Van Dusen Aircraft Supplies Div of Van Dusen Air Inc |
| MILH6536 | 4/1 Identification reference U.S. Government activity |
| 20248-1 | 5/9 Secondary reference Werner Mfg Co Inc |
| 1680PL1429553 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 1680-00-485-2834 is a Horn Assembly,relief, manufactured by Woodland Plastics Corp., classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-00-485-2834 has 2 manufacturer part numbers on file: WM203 (Smith and Smith Aircraft Co), 20248-1 (Woodland Plastics Corp.).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-428-1804. Verify interchangeability with system specifications before substitution.
Key specifications for 20248-1: General Characteristics Item Description: CELLULOSE ACETATE BUTYRATE,8.625 IN. LG,INCLUDES HORN,LEVER,VALVE ROD,SPRING,SHORT AXEL PIN,LONG AXEL PIN IN; End Item Identification: C2/E2,EA-6B,H-46,H2,AH-1 AIRCRAFT. 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.