PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS400/BU-ONLYLamp,metal Halide

Gte Products Corp Sylvania Miniature Lighting Div · NSN 6240-01-344-6990 · FSC 6240 · No Item Name Available
Verified by PartsTable
NSN 6240-01-344-6990 — this item is cataloged by the U.S. Government under National Stock Number 6240-01-344-6990. Primary manufacturer part number: MS400/BU-ONLY.
Features
  • Lamp,metal Halide — FSC 6240
  • Average Life Rating in Hours: 20000.0
  • Bulb Light Transmission Characteristic: TRANSLUCENT
  • Criticality Code Justification: FEAT
  • Environmental Attribute Code: COMPACT FLUORESCENT LAMP (CFL) LIGHT BULBS - ENERGY STAR-LIGHTING - ENERGY EFFICIENT PRODUCTS
  • Rated Average Life: HOURS
  • Bulb Designator: BT-37
  • Wattage Rating: 400.000 WATTS
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Lamp,metal Halide, cataloged under National Stock Number 6240-01-344-6990, is classified within Federal Supply Class 6240 (No Item Name Available) of the Lighting Fixtures and Lamps group. The primary manufacturer of record is Gte Products Corp Sylvania Miniature Lighting Div. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6240-01-344-6990
Primary Part NumberMS400/BU-ONLY
Item NameLamp,metal Halide
FSC / FSG6240 / 62 — No Item Name Available
ManufacturerGte Products Corp Sylvania Miniature Lighting Div
StatusCANCELLED
Average Life Rating in Hours20000.0
Bulb Light Transmission CharacteristicTRANSLUCENT
Criticality Code JustificationFEAT
Environmental Attribute CodeCOMPACT FLUORESCENT LAMP (CFL) LIGHT BULBS - ENERGY STAR-LIGHTING - ENERGY EFFICIENT PRODUCTS
Rated Average LifeHOURS
Bulb DesignatorBT-37
Wattage Rating400.000 WATTS
Bulb StyleBT (BULGED TUBULAR)
Base StyleMOGUL SCREW
Emitted Light CharacteristicWHITE
Light Output Rating31000.000 LUMENS NOMINAL SINGLE RATING
Light Center Length7.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
3110-00-100-363864450 INTERCHANGEABLE
Cone and Rollers,tapered Roller
Rbc Bearings Incorporated Div West Trenton Division
4720-00-556-996164450 INTERCHANGEABLE
Hose
Fwd Seagrave Holdings Lp
3020-01-141-5657301705 INTERCHANGEABLE
Gear Set,bevel,matched
Ships Machinery International, Inc.
6525-01-333-315964450 INTERCHANGEABLE
Envelope,radiographic Film
St John Companies Inc., the Dba St. John Record Programs Div the St John Companies
Cross-Reference Index
Part NumberManufacturer
64450 Gte Products Corp Sylvania Miniature Lighting Div (USA)
MS400/BU-ONLY PRIMARY Gte Products Corp Sylvania Miniature Lighting Div (USA)
301705 Philips Electronics North America Corporation Dba Philips Lighting Div Philips Lighting Company (USA)
Related Parts
3110-00-100-3638INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
64450
4720-00-556-9961INTERCHANGEABLE
HOSE
64450
3020-01-141-5657INTERCHANGEABLE
GEAR SET,BEVEL,MATCHED
301705
6525-01-333-3159INTERCHANGEABLE
ENVELOPE,RADIOGRAPHIC FILM
64450

Frequently Asked Questions

What is NSN 6240-01-344-6990?

NSN 6240-01-344-6990 is a Lamp,metal Halide, manufactured by Gte Products Corp Sylvania Miniature Lighting Div, classified under FSC 6240 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6240-01-344-6990?

NSN 6240-01-344-6990 has 3 cross-referenced part numbers: 64450 (Gte Products Corp Sylvania Miniature Lighting Div), MS400/BU-ONLY (Gte Products Corp Sylvania Miniature Lighting Div), 301705 (Philips Electronics North America Corporation Dba Philips Lighting Div Philips Lighting Company).

What NSN replaces 6240-01-344-6990?

There are 4 known substitutes for 6240-01-344-6990: 3110-00-100-3638, 4720-00-556-9961, 3020-01-141-5657 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS400/BU-ONLY?

Key specifications for MS400/BU-ONLY: Average Life Rating in Hours: 20000.0; Bulb Light Transmission Characteristic: TRANSLUCENT; Criticality Code Justification: FEAT; Environmental Attribute Code: COMPACT FLUORESCENT LAMP (CFL) LIGHT BULBS - ENERGY STAR-LIGHTING - ENERGY EFFICIENT PRODUCTS. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6240-01-344-6990 still in active supply?

NSN 6240-01-344-6990 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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