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821A3 — BEARING,WASHER,THRUST

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

821A3: BEARING,WASHER,THRUST.

The BEARING,WASHER,THRUST is a the manufacturer industrial component. Key specifications include diameter: 2.9060 INCHES NOMINAL IN, material: COPPER ALLOY 937 OVERALL, corner_shape: SQUARE ALL CORNERS, outside_diameter: 3.6250 INCHES NOMINAL IN, special_features: W/2 GROOVES,BEARING SURFACE 2ND HOLE SPACED 75 DEG CW FROM 2ND HOLE ON 3.375 IN. BOLT CIRCLE IN, style_designator: ROUND.

This part is cataloged in the U.S. Government catalog under NSN 3120-00-098-6273, 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
821A3
NSN: 3120-00-098-6273
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 56442 — DIAMOND REO TRUCK CO (USA)
SPECIFICATIONS
diameter2.9060 INCHES NOMINAL IN
materialCOPPER ALLOY 937 OVERALL
corner_shapeSQUARE ALL CORNERS
outside_diameter3.6250 INCHES NOMINAL IN
special_featuresW/2 GROOVES,BEARING SURFACE 2ND HOLE SPACED 75 DEG CW FROM 2ND HOLE ON 3.375 IN. BOLT CIRCLE IN
style_designatorROUND
overall_thickness0.1865 INCHES MINIMUM AND 0.1885 INCHES MAXIMUM IN
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN3120-00-098-6273
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 821A3 · 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
•
OVERALL THICKNESS: 0.1865 INCHES MINIMUM AND 0.1885 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: ROUND
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
DIAMETER: 2.9060 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
OUTSIDE DIAMETER: 3.6250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE ALL CORNERS
OVERALL THICKNESS0.1865 INCHES MINIMUM AND 0.1885 INCHES MAXIMUM IN
STYLE DESIGNATORROUND
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
DIAMETER2.9060 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OUTSIDE DIAMETER3.6250 INCHES NOMINAL IN
SPECIAL FEATURESW/2 GROOVES,BEARING SURFACE 2ND HOLE SPACED 75 DEG CW FROM 2ND HOLE ON 3.375 IN. BOLT CIRCLE IN
MATERIALCOPPER ALLOY 937 OVERALL
CENTER HOLE SHAPE STYLEROUND
SUBSTITUTES & CROSS-REFERENCES 3
E604C200Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
212384Reference document
Same NSN cross-reference
Reference document — Secondary reference
JHP39-147Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 821A3?
821A3 is a BEARING,WASHER,THRUST.
What parts can replace 821A3?
There are 3 known substitutes for 821A3: E604C200, 212384, JHP39-147. Substitute compatibility should be verified for your specific system.
What is the NSN for 821A3?
821A3 is cataloged in the U.S. Government catalog under NSN 3120-00-098-6273. This indicates validated use in U.S. government and defense supply chains.
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