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636A779-001 — BUSHING,SLEEVE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

636A779-001: BUSHING,SLEEVE.

The BUSHING,SLEEVE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 135M OVERALL, flange_width: 0.5000 INCHES NOMINAL IN, overall_length: 3.0000 INCHES NOMINAL IN, body_inside_diameter: 1.2490 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN, body_outside_diameter: 2.1250 INCHES MINIMUM AND 2.1260 INCHES MAXIMUM IN, flange_outside_diameter: 2.6210 INCHES MINIMUM AND 2.6230 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-976-3240, 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
636A779-001
NSN: 3120-00-976-3240
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 01289 — GENERAL ELECTRIC COMPANY (USA)
SPECIFICATIONS
materialSTEEL COMP 135M OVERALL
flange_width0.5000 INCHES NOMINAL IN
overall_length3.0000 INCHES NOMINAL IN
body_inside_diameter1.2490 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN
body_outside_diameter2.1250 INCHES MINIMUM AND 2.1260 INCHES MAXIMUM IN
flange_outside_diameter2.6210 INCHES MINIMUM AND 2.6230 INCHES MAXIMUM IN
material_document_and_classificationMIL-S-869 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN3120-00-976-3240
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 636A779-001 · 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
•
FLANGE OUTSIDE DIAMETER: 2.6210 INCHES MINIMUM AND 2.6230 INCHES MAXIMUM IN
•
BODY OUTSIDE DIAMETER: 2.1250 INCHES MINIMUM AND 2.1260 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-869 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
BODY INSIDE DIAMETER: 1.2490 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN
•
FLANGE WIDTH: 0.5000 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 135M OVERALL
TECHNICAL CHARACTERISTICS
FLANGE OUTSIDE DIAMETER2.6210 INCHES MINIMUM AND 2.6230 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER2.1250 INCHES MINIMUM AND 2.1260 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-869 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH3.0000 INCHES NOMINAL IN
BODY INSIDE DIAMETER1.2490 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN
FLANGE WIDTH0.5000 INCHES NOMINAL IN
MATERIALSTEEL COMP 135M 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 2
J3248745PC29Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
73X2E13PC29Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 636A779-001?
636A779-001 is a BUSHING,SLEEVE.
What parts can replace 636A779-001?
There are 2 known substitutes for 636A779-001: J3248745PC29, 73X2E13PC29. Substitute compatibility should be verified for your specific system.
What is the NSN for 636A779-001?
636A779-001 is cataloged in the U.S. Government catalog under NSN 3120-00-976-3240. 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.