The Light,warning, cataloged under National Stock Number 6220-01-333-5591, is classified within Federal Supply Class 6220 (Electric Vehicular Lights and Fixtures) of the Lighting Fixtures and Lamps group. The manufacturer of record is Truck-Lite Co., Llc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6220-01-333-5591 |
| Primary Part Number | 311A-4 |
| Item Name | Light,warning |
| FSC / FSG | 6220 / 62 — Electric Vehicular Lights and Fixtures |
| Manufacturer | Truck-Lite Co., Llc |
| Status | ACTIVE |
| Voltage Rating in Volts | 12.0 DC NOMINAL |
| 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 |
|---|---|
| 311A-4 PRIMARY | Truck-Lite Co., Llc (USA) |
| Reference | Meaning |
|---|---|
| 311A-4 | 5/9 Secondary reference U.S. Government activity |
| 7-11405 | 5/9 Secondary reference Dietz Lighting Systems |
NSN 6220-01-333-5591 is a Light,warning, manufactured by Truck-Lite Co., Llc, classified under FSC 6220, Electric Vehicular Lights and Fixtures. Status: active.
NSN 6220-01-333-5591 has 1 manufacturer part number on file: 311A-4 (Truck-Lite Co., Llc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-365-2483. Verify interchangeability with system specifications before substitution.
Key specifications for 311A-4: Voltage Rating in Volts: 12.0 DC NOMINAL. 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.