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FG450A51 — COMPENSATOR,LIQUID QUANTITY GAGE

✓ Government record, cited
FIRSTMARK AEROSPACE CORP · COMPONENT
PRODUCT OVERVIEW

FG450A51: COMPENSATOR,LIQUID QUANTITY GAGE.

COMPENSATOR,LIQUID QUANTITY GAGE. Key specifications include CONTACT TYPE: THREADED STUD, OVERALL LENGTH: 28.980 INCHES NOMINAL IN, OVERALL DIAMETER: 3.570 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 6680-01-059-3387, 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
FG450A51
NSN: 6680-01-059-3387
FSC: 6680 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments
CAGE: 3BMV1 — FIRSTMARK AEROSPACE CORP (USA)
SPECIFICATIONS
CONTACT TYPETHREADED STUD
OVERALL LENGTH28.980 INCHES NOMINAL IN
CONTACT QUANTITY5
OVERALL DIAMETER3.570 INCHES MAXIMUM IN
ELECTRICAL CONNECTION QUANTITY5
NSN6680-01-059-3387
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: FIRSTMARK AEROSPACE CORP COMPENSATOR,LIQUID QUANTITY GAGE TITLE COMPONENT PN FG450A51 MFR FIRSTMARK AEROSPACE CORP COMPENSATOR,LIQUID QUA
KEY FEATURES
•
CONTACT TYPE: THREADED STUD
•
ELECTRICAL CONNECTION QUANTITY: 5
•
OVERALL DIAMETER: 3.570 INCHES MAXIMUM IN
•
CONTACT QUANTITY: 5
TECHNICAL CHARACTERISTICS
CONTACT TYPETHREADED STUD
ELECTRICAL CONNECTION QUANTITY5
OVERALL DIAMETER3.570 INCHES MAXIMUM IN
OVERALL LENGTH28.980 INCHES NOMINAL IN
CONTACT QUANTITY5
SUBSTITUTES & CROSS-REFERENCES 1
695799-185Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is FG450A51?
FG450A51 is a COMPENSATOR,LIQUID QUANTITY GAGE manufactured by FIRSTMARK AEROSPACE CORP.
What parts can replace FG450A51?
There is 1 known substitute for FG450A51: 695799-185. Substitute compatibility should be verified for your specific system.
What is the NSN for FG450A51?
FG450A51 is cataloged in the U.S. Government catalog under NSN 6680-01-059-3387. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.