The Lamp,mercury Vapor, cataloged under National Stock Number 6240-01-240-6527, is classified within Federal Supply Class 6240 (Electric Lamps) of the Lighting Fixtures and Lamps group. The manufacturer of record is Westron Corporation Dba Westron Lighting. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6240-01-240-6527 |
| Primary Part Number | H125 |
| Item Name | Lamp,mercury Vapor |
| FSC / FSG | 6240 / 62 — Electric Lamps |
| Manufacturer | Westron Corporation Dba Westron Lighting |
| Status | ACTIVE |
| Bulb Light Transmission Characteristic | TRANSLUCENT |
| Base Style | E27/27 - (ES) |
| Rated Average Life | NOT RATED |
| Bulb Designator | E-18 |
| Features Provided | HEAT RESISTANT GLASS |
| Wattage Rating | 125.000 WATTS |
| Emitted Light Characteristic | WHITE |
| Bulb Style | E (ELIPTICAL) |
| Light Intensity Distribution Feature | INSIDE COATED |
| Voltage Rating | 120.000 VOLTS 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 |
|---|---|
| H125 | Westron Corporation Dba Westron Lighting (USA) |
| Reference | Meaning |
|---|---|
| HPW 125W | 3/9 Design control — primary reference Philips Electronics North America Corporation Dba Philips Lighting Div Philips Lighting Company |
NSN 6240-01-240-6527 is a Lamp,mercury Vapor, manufactured by Westron Corporation Dba Westron Lighting, classified under FSC 6240, Electric Lamps. Status: active.
NSN 6240-01-240-6527 has 1 manufacturer part number on file: H125 (Westron Corporation Dba Westron Lighting).
2 possible matches (shared part number, not a government interchangeability claim): 5360-01-317-8100, 6105-01-387-5205. Verify interchangeability with system specifications before substitution.
Key specifications for H125: Bulb Light Transmission Characteristic: TRANSLUCENT; Base Style: E27/27 - (ES); Rated Average Life: NOT RATED; Bulb Designator: E-18. 10 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.