PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 312504-27
312504-27 ✓ 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,WASHER,THRUST is a the manufacturer industrial component. Key specifications include diameter: 1.1400 INCHES NOMINAL IN, material: COPPER ALLOY OVERALL, corner_shape: SQUARE ALL CORNERS, outside_diameter: 1.8750 INCHES NOMINAL IN, style_designator: ROUND, overall_thickness: 0.1250 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 3120-00-883-7483, 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
312504-27
NSN: 3120-00-883-7483
FSC: 3120
CAGE: 34712 — LAKE SHORE SYSTEMS, INC. (USA)
SPECIFICATIONS
diameter1.1400 INCHES NOMINAL IN
materialCOPPER ALLOY OVERALL
corner_shapeSQUARE ALL CORNERS
outside_diameter1.8750 INCHES NOMINAL IN
style_designatorROUND
overall_thickness0.1250 INCHES NOMINAL IN
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationMIL-L-15016, SYMBOL 2190 MIL SPEC SINGLE MATERIAL RESPONSE LUBRICATION
NSN3120-00-883-7483
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 312504-27 · 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
•
STYLE DESIGNATOR: ROUND
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-L-15016, SYMBOL 2190 MIL SPEC SINGLE MATERIAL RESPONSE LUBRICATION
•
OVERALL THICKNESS: 0.1250 INCHES NOMINAL IN
•
MATERIAL: OIL LUBRICATING LUBRICATION
•
OUTSIDE DIAMETER: 1.8750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CORNER SHAPESQUARE ALL CORNERS
STYLE DESIGNATORROUND
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-L-15016, SYMBOL 2190 MIL SPEC SINGLE MATERIAL RESPONSE LUBRICATION
OVERALL THICKNESS0.1250 INCHES NOMINAL IN
MATERIALOIL LUBRICATING LUBRICATION
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-B-5687,TY 1,COMP A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALCOPPER ALLOY OVERALL
OUTSIDE DIAMETER1.8750 INCHES NOMINAL IN
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
TT1303-1Interchangeable
interchangeable cross-reference
interchangeable
10163354Interchangeable
interchangeable cross-reference
interchangeable
T1303-1Interchangeable
interchangeable cross-reference
interchangeable
63E41527-1Interchangeable
interchangeable cross-reference
interchangeable
00004 STYLE 111Interchangeable
interchangeable cross-reference
interchangeable
44-10-81-00-63Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 312504-27?
312504-27 is a BEARING,WASHER,THRUST.
What parts can replace 312504-27?
There are 13 known substitutes for 312504-27: TT1303-1, 10163354, T1303-1 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 312504-27?
312504-27 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-883-7483. 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