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MS21429-5K — BEARING,PLAIN,ROD END

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

MS21429-5K: BEARING,PLAIN,ROD END.

The BEARING,PLAIN,ROD END is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, shank_style: EXTERNALLY THREADED, thread_class: 3A A, bore_diameter: 0.3125 INCHES NOMINAL IN, overall_length: 3.5300 INCHES NOMINAL IN, thread_diameter: 0.500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-01-587-3871, 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
MS21429-5K
NSN: 3120-01-587-3871
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialSTEEL OVERALL
shank_styleEXTERNALLY THREADED
thread_class3A A
bore_diameter0.3125 INCHES NOMINAL IN
overall_length3.5300 INCHES NOMINAL IN
thread_diameter0.500 INCHES NOMINAL IN
style_designatorBALL TYPE
thread_directionRIGHT-HAND
inner_member_width0.8120 INCHES NOMINAL IN
outer_member_width0.6650 INCHES NOMINAL IN
shank_thread_length1.7500 INCHES NOMINAL IN
thread_quantity_per_inch20
NSN3120-01-587-3871
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: MS21429-5K · 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
•
SHANK THREAD LENGTH: 1.7500 INCHES NOMINAL IN
•
BORE CENTER TO SHANK END DISTANCE: 2.8100 INCHES NOMINAL IN
•
INNER MEMBER WIDTH: 0.8120 INCHES NOMINAL IN
•
OUTER MEMBER WIDTH: 0.6650 INCHES NOMINAL IN
•
STYLE DESIGNATOR: BALL TYPE
•
THREAD DIAMETER: 0.500 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
SHANK THREAD LENGTH1.7500 INCHES NOMINAL IN
BORE CENTER TO SHANK END DISTANCE2.8100 INCHES NOMINAL IN
INNER MEMBER WIDTH0.8120 INCHES NOMINAL IN
OUTER MEMBER WIDTH0.6650 INCHES NOMINAL IN
STYLE DESIGNATORBALL TYPE
THREAD DIAMETER0.500 INCHES NOMINAL IN
OVERALL LENGTH3.5300 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
SHANK STYLEEXTERNALLY THREADED
THREAD CLASS3A A
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
SAE-AS8952Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MS21429-5K?
MS21429-5K is a BEARING,PLAIN,ROD END.
What parts can replace MS21429-5K?
There is 1 known substitute for MS21429-5K: SAE-AS8952. Substitute compatibility should be verified for your specific system.
What is the NSN for MS21429-5K?
MS21429-5K is cataloged in the U.S. Government catalog under NSN 3120-01-587-3871. 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.