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855090 — RELAY,ELECTROMAGNETIC

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

855090: RELAY,ELECTROMAGNETIC.

The RELAY,ELECTROMAGNETIC is a the manufacturer industrial component. Key specifications include material: STEEL OUTER LAYER, hole_diameter: 0.2500 INCHES NOMINAL FIRST IN, overall_length: 1.0265 INCHES MINIMUM AND 1.0365 INCHES MAXIMUM IN, style_designator: HALF SLEEVE, PLAIN, NO OUTSIDE FLANGES, locking_lug_width: 0.1790 INCHES MINIMUM AND 0.1830 INCHES MAXIMUM IN, locking_lug_height: 0.0550 INCHES MINIMUM AND 0.0650 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-039-6666, 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
855090
NSN: 3120-00-039-6666
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 12603 — CLARK EQUIPMENT CO (USA)
SPECIFICATIONS
materialSTEEL OUTER LAYER
hole_diameter0.2500 INCHES NOMINAL FIRST IN
overall_length1.0265 INCHES MINIMUM AND 1.0365 INCHES MAXIMUM IN
style_designatorHALF SLEEVE, PLAIN, NO OUTSIDE FLANGES
locking_lug_width0.1790 INCHES MINIMUM AND 0.1830 INCHES MAXIMUM IN
locking_lug_height0.0550 INCHES MINIMUM AND 0.0650 INCHES MAXIMUM IN
locking_lug_length0.2187 INCHES NOMINAL IN
body_inside_diameter2.4912 INCHES MINIMUM AND 2.4917 INCHES MAXIMUM IN
body_outside_diameter2.6500 INCHES MINIMUM AND 2.6640 INCHES MAXIMUM IN
lubricant_accommodation_styleGROOVED CIRCULAR
surface_groove_location_and_quantity1 INTERNAL
distance_from_lug_end_to_end_of_bearing0.3090 INCHES NOMINAL IN
NSN3120-00-039-6666
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 855090 · 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
•
DISTANCE FROM CENTERLINE OF OPENING TO LEFT END OF BEARING: 0.5159 INCHES NOMINAL FIRST IN
•
LOCKING LUG HEIGHT: 0.0550 INCHES MINIMUM AND 0.0650 INCHES MAXIMUM IN
•
BODY OUTSIDE DIAMETER: 2.6500 INCHES MINIMUM AND 2.6640 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: HALF SLEEVE, PLAIN, NO OUTSIDE FLANGES
•
BODY INSIDE DIAMETER: 2.4912 INCHES MINIMUM AND 2.4917 INCHES MAXIMUM IN
•
LUBRICANT ACCOMMODATION STYLE: GROOVED CIRCULAR
•
LOCKING LUG WIDTH: 0.1790 INCHES MINIMUM AND 0.1830 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
DISTANCE FROM CENTERLINE OF OPENING TO LEFT END OF BEARING0.5159 INCHES NOMINAL FIRST IN
LOCKING LUG HEIGHT0.0550 INCHES MINIMUM AND 0.0650 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER2.6500 INCHES MINIMUM AND 2.6640 INCHES MAXIMUM IN
STYLE DESIGNATORHALF SLEEVE, PLAIN, NO OUTSIDE FLANGES
OVERALL LENGTH1.0265 INCHES MINIMUM AND 1.0365 INCHES MAXIMUM IN
BODY INSIDE DIAMETER2.4912 INCHES MINIMUM AND 2.4917 INCHES MAXIMUM IN
LUBRICANT ACCOMMODATION STYLEGROOVED CIRCULAR
LOCKING LUG WIDTH0.1790 INCHES MINIMUM AND 0.1830 INCHES MAXIMUM IN
ANTIROTATION/LUBRICATION TYPE AND QUANTITY1 HOLE
DISTANCE FROM LUG END TO END OF BEARING0.3090 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 2
959979Reference document
Same NSN cross-reference
Reference document — Secondary reference
863688Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 855090?
855090 is a RELAY,ELECTROMAGNETIC.
What parts can replace 855090?
There are 2 known substitutes for 855090: 959979, 863688. Substitute compatibility should be verified for your specific system.
What is the NSN for 855090?
855090 is cataloged in the U.S. Government catalog under NSN 3120-00-039-6666. This indicates validated use in U.S. government and defense supply chains.
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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.