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Technical Data Sheet
PartsTable / COMPONENT / 278P
278P ✓ Verified by PartsTable
— · BALL BEARING
WHAT YOU NEED TO KNOW
2RS = sealed for life, ZZ = shielded re-greaseable ABEC grade: higher = tighter tolerance
ABEC-1 standard, ABEC-7+ for precision spindles
PRODUCT OVERVIEW

PISTON,INTERNAL COMBUSTION ENGIN. Key specifications include special_features: PUMP,METERING, end_item_identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS, valve_design_control_activity: 64743, valve_model_number_for_which_designed: SERIES 100. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-420-5420, 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
278P
NSN: 3120-00-420-5420
FSC: 3120
CAGE: 0UBG9 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DIV EPD (USA)
SPECIFICATIONS
special_featuresPUMP,METERING
end_item_identificationSTRATEGIC SEALIFT CONVERSION SHIPS CLASS
valve_design_control_activity64743
valve_model_number_for_which_designedSERIES 100
NSN3120-00-420-5420
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 278P · OEM ⚠ VERIFY BEFORE ORDERING ABEC grade: higher = tighter tolerance = higher cost. ABEC-1 is standard, ABEC-7+ for precision spindles. Open, shielded (ZZ), and sealed (2RS) versions have different max RPM ratings ✓ BROKER TIP 2RS = sealed for life (no maintenance). ZZ = shielded, re-greaseable. Open = must lubricate on install. Common interchange: 6205-2RS = 6205-2RSR = 6205-DDU (same bearing, different suffix) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
1768PXInterchangeable
interchangeable cross-reference
interchangeable
A1117PInterchangeable
interchangeable cross-reference
interchangeable
P505NXSTDInterchangeable
interchangeable cross-reference
interchangeable
J20560Interchangeable
interchangeable cross-reference
interchangeable
20560Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 278P?
278P is a PISTON,INTERNAL COMBUSTION ENGIN.
What parts can replace 278P?
There are 5 known substitutes for 278P: 1768PX, A1117P, P505NXSTD and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 278P?
278P is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-420-5420. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026