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FR4-4 — BEARING,ROLLER,ROD END

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

FR4-4: BEARING,ROLLER,ROD END.

The BEARING,ROLLER,ROD END is a the manufacturer industrial component. Key specifications include material: STEEL OUTER RING, shank_style: INTERNALLY THREADED W/HEXAGON END AND INSPECTION HOLE, thread_class: 3B, bore_diameter: 0.2500 INCHES NOMINAL IN, alignment_type: SELF-ALIGNING, overall_length: 2.0640 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-271-0074, 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
FR4-4
NSN: 3110-00-271-0074
NIINs: 002710074, 005290808, 012517627, 013832161
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 77896 — REXNORD INDUSTRIES, LLC DIV AEROSSPACE BEARING OPERATION (USA)
SPECIFICATIONS
materialSTEEL OUTER RING
shank_styleINTERNALLY THREADED W/HEXAGON END AND INSPECTION HOLE
thread_class3B
bore_diameter0.2500 INCHES NOMINAL IN
seal_quantity2
alignment_typeSELF-ALIGNING
overall_length2.0640 INCHES NOMINAL IN
shank_diameter0.5000 INCHES NOMINAL IN
size_designator1
thread_diameter0.250 INCHES NOMINAL IN
inner_ring_width0.5000 INCHES NOMINAL IN
outer_ring_width0.3580 INCHES NOMINAL IN
NSN3110-00-271-0074
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: FR4-4 · OEM ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SHANK DIAMETER: 0.5000 INCHES NOMINAL IN
•
SHANK THREAD LENGTH: 0.8120 INCHES NOMINAL IN
•
BEARING SEAL TYPE: CONTACT
•
WIDTH ACROSS FLATS: 0.5000 INCHES NOMINAL IN
•
LUBRICATION MATERIAL: GREASE
•
OUTER RING WIDTH: 0.3580 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SINGLE ROW, CONCAVE ROLLERS
TECHNICAL CHARACTERISTICS
SHANK DIAMETER0.5000 INCHES NOMINAL IN
SHANK THREAD LENGTH0.8120 INCHES NOMINAL IN
BEARING SEAL TYPECONTACT
WIDTH ACROSS FLATS0.5000 INCHES NOMINAL IN
LUBRICATION MATERIALGREASE
OUTER RING WIDTH0.3580 INCHES NOMINAL IN
STYLE DESIGNATORSINGLE ROW, CONCAVE ROLLERS
OVERALL LENGTH2.1960 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER1.0780 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
SUBSTITUTES & CROSS-REFERENCES 3
FR4-4MILG3278AReference document
Same NSN cross-reference
Reference document — Secondary reference
202-19021-4-4RSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
FR4-4ANG25Reference 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 FR4-4?
FR4-4 is a BEARING,ROLLER,ROD END.
What parts can replace FR4-4?
There are 3 known substitutes for FR4-4: FR4-4MILG3278A, 202-19021-4-4R, FR4-4ANG25. Substitute compatibility should be verified for your specific system.
What is the NSN for FR4-4?
FR4-4 is cataloged in the U.S. Government catalog under NSN 3110-00-271-0074. 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.