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Technical Data Sheet
PartsTable / COMPONENT / 16A3873
16A3873 ✓ 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 SUN T5-8 Rear Chassis Assembly is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-706-3719, 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
16A3873
NSN: 3120-00-706-3719
FSC: 3120
CAGE: 95201 — NAPCO INTERNATIONAL LLC DBA NAPCO INTERNATIONAL INC (USA)
SPECIFICATIONS
Part Number16A3873
NSN3120-00-706-3719
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 16A3873 · 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 6
259751Interchangeable
interchangeable cross-reference
interchangeable
256305Interchangeable
interchangeable cross-reference
interchangeable
12Y4413Interchangeable
Same NIIN cross-reference
interchangeable
418703Interchangeable
Same NIIN cross-reference
interchangeable
277N2Interchangeable
Same NIIN cross-reference
interchangeable
396495Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 16A3873?
16A3873 is a SUN T5-8 Rear Chassis Assembly.
What parts can replace 16A3873?
There are 6 known substitutes for 16A3873: 259751, 256305, 12Y4413 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 16A3873?
16A3873 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-706-3719. 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