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PartsTable / COMPONENT / MS400/BU-ONLY
MS400/BU-ONLY ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The MS400/BU-ONLY is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6240-01-344-6990, indicating validated use in U.S. government and defense logistics supply chains.

Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MS400/BU-ONLY
NSN: 6240-01-344-6990
FSC: 6240
CAGE: 88204 — GTE PRODUCTS CORP SYLVANIA MINIATURE LIGHTING DIV (USA)
SPECIFICATIONS
Part NumberMS400/BU-ONLY
NSN6240-01-344-6990
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available MS400/BU-ONLY TITLE COMPONENT PN MS400/BU-ONLY MFR MS400/BU-ONLY
KEY FEATURES
•
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
TECHNICAL CHARACTERISTICS (FLIS)
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
SPECIAL FEATURESENERGY SAVER
WATTAGE RATING400.000 WATTS
BULB STYLEBT (BULGED TUBULAR)
BASE STYLEMOGUL SCREW
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
V1628Interchangeable
interchangeable cross-reference
interchangeable
64450Interchangeable
interchangeable cross-reference
interchangeable
225.5.01.05.1 PIECE 5/1Interchangeable
interchangeable cross-reference
interchangeable
301705Interchangeable
interchangeable cross-reference
interchangeable
91-1-17-58 TSInterchangeable
interchangeable cross-reference
interchangeable
F91A071Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS400/BU-ONLY?
MS400/BU-ONLY is a MS400/BU-ONLY.
What parts can replace MS400/BU-ONLY?
There are 6 known substitutes for MS400/BU-ONLY: V1628, 64450, 225.5.01.05.1 PIECE 5/1 and 3 more. Substitute compatibility should be verified for your specific system.
Is MS400/BU-ONLY still available?
MS400/BU-ONLY is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026