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Technical Data Sheet
PartsTable / COMPONENT / G25H4-8
G25H4-8 ✓ 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 BUSHING,SLEEVE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, corner_shape: SQUARE ALL CORNERS, overall_length: 0.4970 INCHES MINIMUM AND 0.5030 INCHES MAXIMUM IN, surface_finish: 63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY, style_designator: SOLID, PLAIN, NO OUTSIDE FLANGES, body_inside_diameter: 0.2490 INCHES MINIMUM AND 0.2510 INCHES MAXIMUM 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 3120-00-554-2258, 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
G25H4-8
NSN: 3120-00-554-2258
FSC: 3120
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
corner_shapeSQUARE ALL CORNERS
overall_length0.4970 INCHES MINIMUM AND 0.5030 INCHES MAXIMUM IN
surface_finish63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
body_inside_diameter0.2490 INCHES MINIMUM AND 0.2510 INCHES MAXIMUM IN
body_outside_diameter0.4350 INCHES MINIMUM AND 0.4360 INCHES MAXIMUM IN
lubricant_accommodation_styleGROOVED CIRCULAR
surface_groove_location_and_quantity1 EXTERNAL
NSN3120-00-554-2258
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: G25H4-8 · 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
•
BODY OUTSIDE DIAMETER: 0.4350 INCHES MINIMUM AND 0.4360 INCHES MAXIMUM IN
•
CORNER SHAPE: SQUARE ALL CORNERS
•
SURFACE FINISH: 63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
•
MATERIAL: STEEL OVERALL
•
SURFACE GROOVE LOCATION AND QUANTITY: 1 EXTERNAL
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
BODY INSIDE DIAMETER: 0.2490 INCHES MINIMUM AND 0.2510 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH0.4970 INCHES MINIMUM AND 0.5030 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER0.4350 INCHES MINIMUM AND 0.4360 INCHES MAXIMUM IN
CORNER SHAPESQUARE ALL CORNERS
SURFACE FINISH63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
MATERIALSTEEL OVERALL
SURFACE GROOVE LOCATION AND QUANTITY1 EXTERNAL
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
BODY INSIDE DIAMETER0.2490 INCHES MINIMUM AND 0.2510 INCHES MAXIMUM IN
LUBRICANT ACCOMMODATION STYLEGROOVED CIRCULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
65882Interchangeable
interchangeable cross-reference
interchangeable
23255Interchangeable
interchangeable cross-reference
interchangeable
24120R9 PART 23255Interchangeable
interchangeable cross-reference
interchangeable
2556-053-068Interchangeable
interchangeable cross-reference
interchangeable
23255 PIECE 5AInterchangeable
interchangeable cross-reference
interchangeable
12759-00939Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is G25H4-8?
G25H4-8 is a BUSHING,SLEEVE.
What parts can replace G25H4-8?
There are 8 known substitutes for G25H4-8: 65882, 23255, 24120R9 PART 23255 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for G25H4-8?
G25H4-8 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-554-2258. 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