PartsTable
Technical Data Sheet

M81934/1-16A040 — BEARING,SLEEVE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

M81934/1-16A040: BEARING,SLEEVE.

The BEARING,SLEEVE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OUTER LAYER, corner_shape: SQUARE ALL CORNERS, overall_length: 1.2400 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN, surface_finish: 63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY, style_designator: SOLID, PLAIN, NO OUTSIDE FLANGES, surface_treatment: ANODIZE OR CHROMATE OUTER LAYER. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-232-3946, 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
M81934/1-16A040
NSN: 3120-01-232-3946
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OUTER LAYER
corner_shapeSQUARE ALL CORNERS
overall_length1.2400 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN
surface_finish63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
surface_treatmentANODIZE OR CHROMATE OUTER LAYER
body_inside_diameter1.0005 INCHES MINIMUM AND 1.0015 INCHES MAXIMUM IN
body_outside_diameter1.1893 INCHES MINIMUM AND 1.1903 INCHES MAXIMUM IN
material_document_and_classificationQQ-A-200/3 T851 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6 T8511 FED SPEC SINGLE MATERIAL RESPONSE OUTER LAYER
surface_treatment_document_and_classificationMIL-A-8625 N1 OR 2 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-C-5541 MIL SPEC 2ND TREATMENT RESPONSE OUTER LAYER
NSN3120-01-232-3946
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: M81934/1-16A040 · 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
•
SURFACE FINISH: 63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
•
CORNER SHAPE: SQUARE ALL CORNERS
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625 N1 OR 2 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-C-5541 MIL SPEC 2ND TREATMENT RESPONSE OUTER LAYER
•
BODY OUTSIDE DIAMETER: 1.1893 INCHES MINIMUM AND 1.1903 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-200/3 T851 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6 T8511 FED SPEC SINGLE MATERIAL RESPONSE OUTER LAYER
•
BODY INSIDE DIAMETER: 1.0005 INCHES MINIMUM AND 1.0015 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
CORNER SHAPESQUARE ALL CORNERS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 N1 OR 2 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-C-5541 MIL SPEC 2ND TREATMENT RESPONSE OUTER LAYER
BODY OUTSIDE DIAMETER1.1893 INCHES MINIMUM AND 1.1903 INCHES MAXIMUM IN
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-200/3 T851 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6 T8511 FED SPEC SINGLE MATERIAL RESPONSE OUTER LAYER
OVERALL LENGTH1.2400 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN
BODY INSIDE DIAMETER1.0005 INCHES MINIMUM AND 1.0015 INCHES MAXIMUM IN
SURFACE TREATMENTANODIZE OR CHROMATE OUTER LAYER
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE INNER LAYER
OTHER ITEMS IN FSC 3120 — Bearings, Plain, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3120-00-001-1288 3120-00-001-1835 3120-00-001-1838 3120-00-001-1928 3120-00-001-1934 3120-00-001-3933 3120-00-001-3937 3120-00-001-3938
SUBSTITUTES & CROSS-REFERENCES 2
SAE-AS81934/1Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
MIL-B-81934/1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is M81934/1-16A040?
M81934/1-16A040 is a BEARING,SLEEVE.
What parts can replace M81934/1-16A040?
There are 2 known substitutes for M81934/1-16A040: SAE-AS81934/1, MIL-B-81934/1. Substitute compatibility should be verified for your specific system.
What is the NSN for M81934/1-16A040?
M81934/1-16A040 is cataloged in the U.S. Government catalog under NSN 3120-01-232-3946. 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.