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2877816-1 — MICROCIRCUIT,DIGITAL

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

2877816-1: MICROCIRCUIT,DIGITAL.

The MICROCIRCUIT,DIGITAL is a the manufacturer industrial component. Key specifications include material: IRON CAST UNS F11701 OVERALL, corner_shape: SQUARE ALL CORNERS, flange_width: 0.4380 INCHES NOMINAL IN, overall_length: 1.3130 INCHES NOMINAL IN, keyway_dimension: 1.3130 INCHES NOMINAL EXTERNAL KEYWAY LENGTH IN, style_designator: SPLIT, EXTERNAL FLANGE ONE END. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-013-5959, 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
2877816-1
NSN: 3120-01-013-5959
NIINs: 010135959, 013567442
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 30003 — NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialIRON CAST UNS F11701 OVERALL
corner_shapeSQUARE ALL CORNERS
flange_width0.4380 INCHES NOMINAL IN
overall_length1.3130 INCHES NOMINAL IN
keyway_dimension1.3130 INCHES NOMINAL EXTERNAL KEYWAY LENGTH IN
style_designatorSPLIT, EXTERNAL FLANGE ONE END
body_inside_diameter1.1250 INCHES NOMINAL IN
body_outside_diameter1.1880 INCHES NOMINAL IN
flange_outside_diameter3.1250 INCHES NOMINAL IN
material_document_and_classificationQQ-I-652 CLASS 25 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN3120-01-013-5959
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 2877816-1 · 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
•
CORNER SHAPE: SQUARE ALL CORNERS
•
FLANGE OUTSIDE DIAMETER: 3.1250 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 1.1880 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SPLIT, EXTERNAL FLANGE ONE END
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-I-652 CLASS 25 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
BODY INSIDE DIAMETER: 1.1250 INCHES NOMINAL IN
•
FLANGE WIDTH: 0.4380 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE ALL CORNERS
FLANGE OUTSIDE DIAMETER3.1250 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER1.1880 INCHES NOMINAL IN
STYLE DESIGNATORSPLIT, EXTERNAL FLANGE ONE END
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-I-652 CLASS 25 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH1.3130 INCHES NOMINAL IN
BODY INSIDE DIAMETER1.1250 INCHES NOMINAL IN
FLANGE WIDTH0.4380 INCHES NOMINAL IN
MATERIALIRON CAST UNS F11701 OVERALL
KEYWAY DIMENSION0.1250 INCHES NOMINAL EXTERNAL KEYWAY DEPTH IN
SUBSTITUTES & CROSS-REFERENCES 1
SDSReference 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 2877816-1?
2877816-1 is a MICROCIRCUIT,DIGITAL.
What parts can replace 2877816-1?
There is 1 known substitute for 2877816-1: SDS. Substitute compatibility should be verified for your specific system.
What is the NSN for 2877816-1?
2877816-1 is cataloged in the U.S. Government catalog under NSN 3120-01-013-5959. 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.