PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

500E37/MERCULITE-277/MOG/HOWLamp,mercury Vapor

Westron Corporation Dba Westron Lighting · NSN 6240-01-313-6858 · FSC 6240 · No Item Name Available
Verified by PartsTable
NSN 6240-01-313-6858 — this item is cataloged by the U.S. Government under National Stock Number 6240-01-313-6858. Primary manufacturer part number: 500E37/MERCULITE-277/MOG/HOW.
Features
  • Lamp,mercury Vapor — FSC 6240
  • Bulb Designator: E-37
  • Emitted Light Characteristic: WHITE
  • Wattage Rating: 500.000 WATTS
  • Voltage Rating: 277.000 VOLTS NOMINAL
  • Rated Average Life: HOURS
  • Base Style: MOGUL SCREW
  • Bulb Light Transmission Characteristic: TRANSLUCENT
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Lamp,mercury Vapor, cataloged under National Stock Number 6240-01-313-6858, is classified within Federal Supply Class 6240 (No Item Name Available) of the Lighting Fixtures and Lamps group. The primary manufacturer of record is Westron Corporation Dba Westron Lighting. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6240-01-313-6858
Primary Part Number500E37/MERCULITE-277/MOG/HOW
Item NameLamp,mercury Vapor
FSC / FSG6240 / 62 — No Item Name Available
ManufacturerWestron Corporation Dba Westron Lighting
StatusACTIVE
Bulb DesignatorE-37
Emitted Light CharacteristicWHITE
Wattage Rating500.000 WATTS
Voltage Rating277.000 VOLTS NOMINAL
Rated Average LifeHOURS
Base StyleMOGUL SCREW
Bulb Light Transmission CharacteristicTRANSLUCENT
Average Life Rating in Hours16000.0
Bulb StyleE (ELIPTICAL)
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
3110-00-151-843910A302 INTERCHANGEABLE
Cup,tapered Roller Bearing
Napco International Llc Dba Napco International Inc
Cross-Reference Index
Part NumberManufacturer
37806 Westron Corporation Dba Westron Lighting (USA)
500E37/MERCULITE-277/MOG/HOW PRIMARY Westron Corporation Dba Westron Lighting (USA)
Related Parts
3110-00-151-8439INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
10A302

Frequently Asked Questions

What is NSN 6240-01-313-6858?

NSN 6240-01-313-6858 is a Lamp,mercury Vapor, manufactured by Westron Corporation Dba Westron Lighting, classified under FSC 6240 (No Item Name Available). Status: active.

What are the part numbers for NSN 6240-01-313-6858?

NSN 6240-01-313-6858 has 2 cross-referenced part numbers: 37806 (Westron Corporation Dba Westron Lighting), 500E37/MERCULITE-277/MOG/HOW (Westron Corporation Dba Westron Lighting).

What NSN replaces 6240-01-313-6858?

There is 1 known substitute for 6240-01-313-6858: 3110-00-151-8439. Verify interchangeability with system specifications before substitution.

What are the specifications of 500E37/MERCULITE-277/MOG/HOW?

Key specifications for 500E37/MERCULITE-277/MOG/HOW: Bulb Designator: E-37; Emitted Light Characteristic: WHITE; Wattage Rating: 500.000 WATTS; Overall Length: 11.750 INCHES MAXIMUM IN. 11 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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