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PartsTable / COMPONENT / DD421S53-021PC44
DD421S53-021PC44 ✓ 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

The BEARING,SLEEVE is a the manufacturer industrial component. Key specifications include material: STEEL, thread_size: 1.500-12, thread_class: 3A A, hole_diameter: 0.250 INCHES NOMINAL IN, thread_length: 0.375 INCHES NOMINAL IN, overall_length: 1.375 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-337-1082, 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
DD421S53-021PC44
NSN: 3120-00-337-1082
FSC: 3120
CAGE: 80064 — NAVAL SHIP SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL
thread_size1.500-12
thread_class3A A
hole_diameter0.250 INCHES NOMINAL IN
thread_length0.375 INCHES NOMINAL IN
overall_length1.375 INCHES NOMINAL IN
style_designatorROUND, EXTERNAL THREAD, INVERTED FLARE
thread_directionRIGHT-HAND
seat_angle_in_deg25.0
hole_or_slot_quantity6
screw_thread_locationEXTERNAL
casehardening_indicatorNOT CASEHARDENED
NSN3120-00-337-1082
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: DD421S53-021PC44 · 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 29
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7004Interchangeable
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2869255-1Interchangeable
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DE339S4700-24146Interchangeable
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LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is DD421S53-021PC44?
DD421S53-021PC44 is a BEARING,SLEEVE.
What parts can replace DD421S53-021PC44?
There are 29 known substitutes for DD421S53-021PC44: PGR, 7004-00, 7003 and 26 more. Substitute compatibility should be verified for your specific system.
What is the NSN for DD421S53-021PC44?
DD421S53-021PC44 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-337-1082. 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