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T399 — BEARING,PLAIN,ROD END

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

T399: BEARING,PLAIN,ROD END.

The BEARING,PLAIN,ROD END is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, shank_style: INTERNALLY THREADED W/HEXAGON END AND INSPECTION HOLE, thread_class: 3B, bore_diameter: 0.3755 INCHES MINIMUM AND 0.3775 INCHES MAXIMUM IN, overall_length: 2.1880 INCHES NOMINAL IN, thread_diameter: 0.375 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-692-9255, 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
T399
NSN: 3120-00-692-9255
NIINs: 006929255, 013502460
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 93019 — O & S ACQUISITION LLC DBA O & S AMERICA LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
shank_styleINTERNALLY THREADED W/HEXAGON END AND INSPECTION HOLE
thread_class3B
bore_diameter0.3755 INCHES MINIMUM AND 0.3775 INCHES MAXIMUM IN
overall_length2.1880 INCHES NOMINAL IN
thread_diameter0.375 INCHES NOMINAL IN
style_designatorBALL TYPE
thread_directionRIGHT-HAND
features_providedEXTERNAL LUBRICATION FITTING
inner_member_width0.5930 INCHES NOMINAL IN
outer_member_width0.4110 INCHES NOMINAL IN
lubrication_featureGROOVE EXTERNAL INNER MEMBER
NSN3120-00-692-9255
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: T399 · 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: 0.9000 INCHES NOMINAL IN
•
BORE CENTER TO SHANK END DISTANCE: 1.6150 INCHES MINIMUM AND 1.6350 INCHES MAXIMUM IN
•
INNER MEMBER WIDTH: 0.5930 INCHES NOMINAL IN
•
OUTER MEMBER WIDTH: 0.4110 INCHES NOMINAL IN
•
STYLE DESIGNATOR: BALL TYPE
•
THREAD DIAMETER: 0.375 INCHES NOMINAL IN
•
LUBRICATION FEATURE: GROOVE EXTERNAL INNER MEMBER
TECHNICAL CHARACTERISTICS
SHANK THREAD LENGTH0.9000 INCHES NOMINAL IN
BORE CENTER TO SHANK END DISTANCE1.6150 INCHES MINIMUM AND 1.6350 INCHES MAXIMUM IN
INNER MEMBER WIDTH0.5930 INCHES NOMINAL IN
OUTER MEMBER WIDTH0.4110 INCHES NOMINAL IN
STYLE DESIGNATORBALL TYPE
THREAD DIAMETER0.375 INCHES NOMINAL IN
OVERALL LENGTH2.1880 INCHES NOMINAL IN
LUBRICATION FEATUREGROOVE EXTERNAL INNER MEMBER
SHANK WIDTH ACROSS WRENCH FLATS0.5520 INCHES MINIMUM AND 0.5720 INCHES MAXIMUM IN
FEATURES PROVIDEDEXTERNAL LUBRICATION FITTING
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
3120006929255Reference document
Same NSN cross-reference
Reference document — Informative reference only
HF6BReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is T399?
T399 is a BEARING,PLAIN,ROD END.
What parts can replace T399?
There are 2 known substitutes for T399: 3120006929255, HF6B. Substitute compatibility should be verified for your specific system.
What is the NSN for T399?
T399 is cataloged in the U.S. Government catalog under NSN 3120-00-692-9255. 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.