The Worm Wheel,landing Light, cataloged under National Stock Number 6220-00-447-9656, is classified within Federal Supply Class 6220 (Electric Vehicular Lights and Fixtures) of the Lighting Fixtures and Lamps group. The manufacturer of record is Grimes Aerospace Company. 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. 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 | 6220-00-447-9656 |
| Primary Part Number | A8174-1 |
| Item Name | Worm Wheel,landing Light |
| FSC / FSG | 6220 / 62 — Electric Vehicular Lights and Fixtures |
| Manufacturer | Grimes Aerospace Company |
| Status | ACTIVE |
| General Characteristics Item Description | 0.437 IN. H.;0.2495 IN. DIA HOLE THROUGH CENTER;2 0.1065 IN. DIA. HOLESWITH NO 6-32 NC-2B THD.;32 TEETH IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| A8174-1 PRIMARY | Grimes Aerospace Company (USA) |
NSN 6220-00-447-9656 is a Worm Wheel,landing Light, manufactured by Grimes Aerospace Company, classified under FSC 6220, Electric Vehicular Lights and Fixtures. Status: active.
NSN 6220-00-447-9656 has 1 manufacturer part number on file: A8174-1 (Grimes Aerospace Company).
1 possible match (shared part number, not a government interchangeability claim): 4720-01-485-7499. Verify interchangeability with system specifications before substitution.
Key specifications for A8174-1: General Characteristics Item Description: 0.437 IN. H.;0.2495 IN. DIA HOLE THROUGH CENTER;2 0.1065 IN. DIA. HOLESWITH NO 6-32 NC-2B THD.;32 TEETH IN. 1 specification is documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.