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638C700H03 — BEARING,SLEEVE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

638C700H03: BEARING,SLEEVE.

The BEARING,SLEEVE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 633 OVERALL, end_item_identification: SEAWOLF CLASS SSN, material_document_and_classification: QQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-458-7629, 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
638C700H03
NSN: 3120-01-458-7629
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 79500 — WESTINGHOUSE ELECTRIC CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 633 OVERALL
end_item_identificationSEAWOLF CLASS SSN
material_document_and_classificationQQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN3120-01-458-7629
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 638C700H03 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: STEEL COMP 633 OVERALL
TECHNICAL CHARACTERISTICS
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
END ITEM IDENTIFICATIONSEAWOLF CLASS SSN
MATERIALSTEEL COMP 633 OVERALL
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 1
905J010PC89Reference 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 638C700H03?
638C700H03 is a BEARING,SLEEVE.
What parts can replace 638C700H03?
There is 1 known substitute for 638C700H03: 905J010PC89. Substitute compatibility should be verified for your specific system.
What is the NSN for 638C700H03?
638C700H03 is cataloged in the U.S. Government catalog under NSN 3120-01-458-7629. 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.