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F55890 — CYLINDER ASSEMBLY,HYDRAULIC BRAK

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

F55890: CYLINDER ASSEMBLY,HYDRAULIC BRAK.

CYLINDER ASSEMBLY,HYDRAULIC BRAK. Key specifications include material: STEEL BODY, bore_type: STRAIGHT, tank_width: 4.500 INCHES NOMINAL SINGLE TANK UPPER IN, tank_height: 4.844 INCHES NOMINAL SINGLE TANK UPPER IN, bore_diameter: 1.062 INCHES NOMINAL IN, overall_width: 2.625 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 2930-00-053-0553, 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
F55890
NSN: 2930-00-053-0553
NIINs: 000530553, 001135456
FSC: 2930 — Engine Cooling System Components, Nonaircraft
CAGE: 59690 — KOEHRING CO LORAIN DIV (USA)
SPECIFICATIONS
materialSTEEL BODY
bore_typeSTRAIGHT
tank_width4.500 INCHES NOMINAL SINGLE TANK UPPER IN
tank_height4.844 INCHES NOMINAL SINGLE TANK UPPER IN
bore_diameter1.062 INCHES NOMINAL IN
overall_width2.625 INCHES NOMINAL IN
tank_locationUPPER SINGLE TANK UPPER
tank_quantity1 SINGLE TANK UPPER
overall_height1.625 INCHES NOMINAL IN
body_outside_diameter1.500 INCHES NOMINAL IN
design_characteristicsSINGLE ACTING SINGLE CYLINDER
bleeding_feature_quantity1
NSN2930-00-053-0553
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CYLINDER ASSEMBLY,HYDRAULIC BRAK TITLE COMPONENT PN F55890 MFR CYLINDER ASSEMBLY,HYDR
KEY FEATURES
•
TANK HEIGHT: 4.844 INCHES NOMINAL SINGLE TANK UPPER IN
•
TANK QUANTITY: 1 SINGLE TANK UPPER
•
TANK WIDTH: 4.500 INCHES NOMINAL SINGLE TANK UPPER IN
•
TANK LOCATION: UPPER SINGLE TANK UPPER
TECHNICAL CHARACTERISTICS
TANK HEIGHT4.844 INCHES NOMINAL SINGLE TANK UPPER IN
OVERALL HEIGHT31.812 INCHES NOMINAL IN
TANK QUANTITY1 SINGLE TANK UPPER
OVERALL WIDTH3.906 INCHES NOMINAL IN
TANK WIDTH4.500 INCHES NOMINAL SINGLE TANK UPPER IN
TANK LOCATIONUPPER SINGLE TANK UPPER
SUBSTITUTES & CROSS-REFERENCES 3
R7623Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
F12862Reference document
Same NSN cross-reference
Reference document — Secondary reference
F79964XReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is F55890?
F55890 is a CYLINDER ASSEMBLY,HYDRAULIC BRAK.
What parts can replace F55890?
There are 3 known substitutes for F55890: R7623, F12862, F79964X. Substitute compatibility should be verified for your specific system.
What is the NSN for F55890?
F55890 is cataloged in the U.S. Government catalog under NSN 2930-00-053-0553. 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.