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Technical Data Sheet
PartsTable / COMPONENT / AS81820/1
AS81820/1 ✓ 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 AS81820/1 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-332-4378, 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
AS81820/1
NSN: 3120-00-332-4378
FSC: 3120
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
Part NumberAS81820/1
NSN3120-00-332-4378
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: AS81820/1 · 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
KEY FEATURES
•
HARDNESS RATING: 55.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM INNER MEMBER
•
STYLE DESIGNATOR: WITH INSERT AND/OR LINER
•
MATERIAL: STEEL COMP 630 OUTER RACE MEMBER
•
OUTER MEMBER OUTSIDE DIAMETER: 1.6245 INCHES MINIMUM AND 1.6250 INCHES MAXIMUM IN
•
INNER MEMBER WIDTH: 0.8730 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
HARDNESS RATING55.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM INNER MEMBER
STYLE DESIGNATORWITH INSERT AND/OR LINER
MATERIALSTEEL COMP 630 OUTER RACE MEMBER
HARDNESS RATING23.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OUTER RACE MEMBER
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE RACE LINER
MATERIALSTEEL COMP 440C INNER MEMBER
OUTER MEMBER OUTSIDE DIAMETER1.6245 INCHES MINIMUM AND 1.6250 INCHES MAXIMUM IN
INNER MEMBER WIDTH0.8730 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM IN
BORE DIAMETER0.8745 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM IN
OUTER MEMBER WIDTH0.7500 INCHES MINIMUM AND 0.7600 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
AS14104Interchangeable
interchangeable cross-reference
interchangeable
SAE-AS81820Interchangeable
interchangeable cross-reference
interchangeable
MIL-B-81820Interchangeable
interchangeable cross-reference
interchangeable
AS81820Interchangeable
interchangeable cross-reference
interchangeable
AS14104-7CInterchangeable
interchangeable cross-reference
interchangeable
MS14103-14Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AS81820/1?
AS81820/1 is a AS81820/1.
What parts can replace AS81820/1?
There are 8 known substitutes for AS81820/1: AS14104, SAE-AS81820, MIL-B-81820 and 5 more. Substitute compatibility should be verified for your specific system.
Is AS81820/1 still available?
AS81820/1 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026