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H-7-218 — BUSHING,SLEEVE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

H-7-218: BUSHING,SLEEVE.

The BUSHING,SLEEVE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 630 OR STEEL COMP 321 OVERALL, corner_shape: SQUARE ALL CORNERS, overall_length: 2.1750 INCHES MINIMUM AND 2.1800 INCHES MAXIMUM IN, surface_finish: 8.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY, style_designator: SOLID, PLAIN, NO OUTSIDE FLANGES, surface_treatment: CHROMIUM OUTSIDE DIAMETER SURFACE OF BODY. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-043-4381, 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
H-7-218
NSN: 3120-01-043-4381
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 73134 — ROLLER BEARING COMPANY OF AMERICA, INC. (USA)
SPECIFICATIONS
materialSTEEL COMP 630 OR STEEL COMP 321 OVERALL
corner_shapeSQUARE ALL CORNERS
overall_length2.1750 INCHES MINIMUM AND 2.1800 INCHES MAXIMUM IN
surface_finish8.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
surface_treatmentCHROMIUM OUTSIDE DIAMETER SURFACE OF BODY
body_inside_diameter0.4375 INCHES MINIMUM AND 0.4390 INCHES MAXIMUM IN
body_outside_diameter0.4990 INCHES MINIMUM AND 0.4995 INCHES MAXIMUM IN
surface_treatment_document_and_classificationQQ-C-320 FED SPEC SINGLE TREATMENT RESPONSE OUTSIDE DIAMETER SURFACE OF BODY
NSN3120-01-043-4381
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: H-7-218 · 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
•
SURFACE FINISH: 125.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
•
CORNER SHAPE: SQUARE ALL CORNERS
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-C-320 FED SPEC SINGLE TREATMENT RESPONSE OUTSIDE DIAMETER SURFACE OF BODY
•
BODY OUTSIDE DIAMETER: 0.4990 INCHES MINIMUM AND 0.4995 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
TECHNICAL CHARACTERISTICS
SURFACE FINISH125.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
SURFACE FINISH8.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
SURFACE FINISH125.0 MICROINCHES RIGHT END SURFACE OF BODY
SURFACE FINISH125.0 MICROINCHES LEFT END SURFACE OF BODY
CORNER SHAPESQUARE ALL CORNERS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-C-320 FED SPEC SINGLE TREATMENT RESPONSE OUTSIDE DIAMETER SURFACE OF BODY
BODY OUTSIDE DIAMETER0.4990 INCHES MINIMUM AND 0.4995 INCHES MAXIMUM IN
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
OVERALL LENGTH2.1750 INCHES MINIMUM AND 2.1800 INCHES MAXIMUM IN
BODY INSIDE DIAMETER0.4375 INCHES MINIMUM AND 0.4390 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 3120 — Bearings, Plain, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3120-00-001-1288 3120-00-001-1835 3120-00-001-1838 3120-00-001-1928 3120-00-001-1934 3120-00-001-3933 3120-00-001-3937 3120-00-001-3938
SUBSTITUTES & CROSS-REFERENCES 3
GL519A7-218Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
B365-7-218Reference document
Same NSN cross-reference
Reference document — Secondary reference
SJ6H14-218Reference 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 H-7-218?
H-7-218 is a BUSHING,SLEEVE.
What parts can replace H-7-218?
There are 3 known substitutes for H-7-218: GL519A7-218, B365-7-218, SJ6H14-218. Substitute compatibility should be verified for your specific system.
What is the NSN for H-7-218?
H-7-218 is cataloged in the U.S. Government catalog under NSN 3120-01-043-4381. 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.