The Stop Light-Taillight,vehicular, cataloged under National Stock Number 6220-01-066-4077, 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 13 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6220-01-066-4077 |
| Primary Part Number | 4021 |
| Item Name | Stop Light-Taillight,vehicular |
| FSC / FSG | 6220 / 62 — Electric Vehicular Lights and Fixtures |
| Manufacturer | Truck-Lite Co., Llc |
| Status | ACTIVE |
| Lens Color | COLORLESS AND RED |
| Mounting Method | UNTHREADED HOLE(S) |
| Shape | RECTANGULAR |
| Lamp Base Type Accommodated | DOUBLE CONTACT BAYONET CANDELABRA INDEXING |
| Wiring Provision Method | CABLE |
| Lens Transparency | TRANSPARENT |
| Lamp Type Accommodated and Quantity | 2 INCANDESCENT |
| Material | PLASTIC POLYCARBONATE BODY |
| Terminal Type and Quantity | 4 SCREW |
| Lens Surface Condition | SMOOTH FACE |
| Lens Surface Condition | CONCENTRIC RINGS BACK |
| Lens Type and Quantity | 1 FLAT, RECTANGULAR, FRAMED |
| Voltage Rating in Volts | 12.0 AC 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 |
|---|---|
| 4021 PRIMARY | Truck-Lite Co., Llc (USA) |
| Reference | Meaning |
|---|---|
| 4021 | 5/9 Secondary reference Signal-Stat Corp |
| 257-2655 | 5/9 Secondary reference Concord Instruments Corp |
NSN 6220-01-066-4077 is a Stop Light-Taillight,vehicular, manufactured by Truck-Lite Co., Llc, classified under FSC 6220, Electric Vehicular Lights and Fixtures. Status: active.
NSN 6220-01-066-4077 has 1 manufacturer part number on file: 4021 (Truck-Lite Co., Llc).
Key specifications for 4021: Overall Height: 6.750 INCHES NOMINAL IN; Lens Color: COLORLESS AND RED; Mounting Method: UNTHREADED HOLE(S); Shape: RECTANGULAR. 13 specifications are 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.