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AA1108-12 — BEARING,SLEEVE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

AA1108-12: BEARING,SLEEVE.

The BEARING,SLEEVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, corner_shape: SQUARE ALL CORNERS, overall_length: 1.4950 INCHES MINIMUM AND 1.5050 INCHES MAXIMUM IN, style_designator: SOLID, PLAIN, NO OUTSIDE FLANGES, body_inside_diameter: 0.8750 INCHES MINIMUM AND 0.8760 INCHES MAXIMUM IN, body_outside_diameter: 1.1270 INCHES MINIMUM AND 1.1280 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-121-7781, 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
AA1108-12
NSN: 3120-00-121-7781
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 70901 — BEEMER PRECISION INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
corner_shapeSQUARE ALL CORNERS
overall_length1.4950 INCHES MINIMUM AND 1.5050 INCHES MAXIMUM IN
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
body_inside_diameter0.8750 INCHES MINIMUM AND 0.8760 INCHES MAXIMUM IN
body_outside_diameter1.1270 INCHES MINIMUM AND 1.1280 INCHES MAXIMUM IN
material_document_and_classificationMIL-B-5687, TY 1, GR 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN3120-00-121-7781
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: AA1108-12 · 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
•
CORNER SHAPE: SQUARE ALL CORNERS
•
BODY OUTSIDE DIAMETER: 1.1270 INCHES MINIMUM AND 1.1280 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-B-5687, TY 1, GR 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
BODY INSIDE DIAMETER: 0.8750 INCHES MINIMUM AND 0.8760 INCHES MAXIMUM IN
•
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE ALL CORNERS
BODY OUTSIDE DIAMETER1.1270 INCHES MINIMUM AND 1.1280 INCHES MAXIMUM IN
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-B-5687, TY 1, GR 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH1.4950 INCHES MINIMUM AND 1.5050 INCHES MAXIMUM IN
BODY INSIDE DIAMETER0.8750 INCHES MINIMUM AND 0.8760 INCHES MAXIMUM IN
MATERIALCOPPER ALLOY OVERALL
MATERIALOIL LUBRICATING LUBRICATION
SUBSTITUTES & CROSS-REFERENCES 2
SL873-24Reference document
Same NSN cross-reference
Reference document — Secondary reference
A1108-12Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AA1108-12?
AA1108-12 is a BEARING,SLEEVE.
What parts can replace AA1108-12?
There are 2 known substitutes for AA1108-12: SL873-24, A1108-12. Substitute compatibility should be verified for your specific system.
What is the NSN for AA1108-12?
AA1108-12 is cataloged in the U.S. Government catalog under NSN 3120-00-121-7781. 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.