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Technical Data Sheet
PartsTable / COMPONENT / 178839
178839 ✓ Verified by PartsTable
Hama · TAPERED BEARING
WHAT YOU NEED TO KNOW
Cup and cone sold separately — confirm both needed Timken series numbers indicate dimensions
Cup and cone NOT sold as set — verify order
PRODUCT OVERVIEW

- Provides optimum protection for sensitive smartphone displays against knocks, bumps and fingerprints<br>- High-tech real glass: only 0.33 mm thin<br>- Designed in Germany. Key specifications include material: STEEL OVERALL, bore_diameter: 1.3122 INCHES MINIMUM AND 1.3128 INCHES MAXIMUM IN, load_direction: RADIAL, inner_ring_width: 0.2760 INCHES MINIMUM AND 0.2810 INCHES MAXIMUM IN, outer_ring_width: 0.2500 INCHES NOMINAL IN, style_designator: SINGLE ROW, TORQUE TUBE TYPE, W/OR W/O CLOSURE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-275-0277, 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
178839
NSN: 3110-00-275-0277
FSC: 3110
CAGE: 56232 — LOCKHEED MARTIN CORPORATION DIV RMS - MITCHEL FIELD (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_diameter1.3122 INCHES MINIMUM AND 1.3128 INCHES MAXIMUM IN
load_directionRADIAL
inner_ring_width0.2760 INCHES MINIMUM AND 0.2810 INCHES MAXIMUM IN
outer_ring_width0.2500 INCHES NOMINAL IN
style_designatorSINGLE ROW, TORQUE TUBE TYPE, W/OR W/O CLOSURE
overall_outside_diameter1.7490 INCHES MINIMUM AND 1.7500 INCHES MAXIMUM IN
lubrication_material_document_and_classificationMIL-G-3278 MIL SPEC SINGLE MATERIAL RESPONSE
NSN3110-00-275-0277
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 178839 · Hama ⚠ 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
•
INNER RING WIDTH: 0.2760 INCHES MINIMUM AND 0.2810 INCHES MAXIMUM IN
•
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-3278 MIL SPEC SINGLE MATERIAL RESPONSE
•
LOAD DIRECTION: RADIAL
•
OUTER RING WIDTH: 0.2500 INCHES NOMINAL IN
•
OVERALL OUTSIDE DIAMETER: 1.7490 INCHES MINIMUM AND 1.7500 INCHES MAXIMUM IN
•
BORE DIAMETER: 1.3122 INCHES MINIMUM AND 1.3128 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SINGLE ROW, TORQUE TUBE TYPE, W/OR W/O CLOSURE
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
INNER RING WIDTH0.2760 INCHES MINIMUM AND 0.2810 INCHES MAXIMUM IN
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-3278 MIL SPEC SINGLE MATERIAL RESPONSE
LOAD DIRECTIONRADIAL
OUTER RING WIDTH0.2500 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER1.7490 INCHES MINIMUM AND 1.7500 INCHES MAXIMUM IN
BORE DIAMETER1.3122 INCHES MINIMUM AND 1.3128 INCHES MAXIMUM IN
STYLE DESIGNATORSINGLE ROW, TORQUE TUBE TYPE, W/OR W/O CLOSURE
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
JHP133-769-16Interchangeable
interchangeable cross-reference
interchangeable
Z5U102Interchangeable
interchangeable cross-reference
interchangeable
47-465Interchangeable
interchangeable cross-reference
interchangeable
265-942022-7Interchangeable
interchangeable cross-reference
interchangeable
5371-5Interchangeable
interchangeable cross-reference
interchangeable
SK7117Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 178839?
178839 is a BEARING,BALL,AIRFRAME manufactured by Hama.
What parts can replace 178839?
There are 8 known substitutes for 178839: JHP133-769-16, Z5U102, 47-465 and 5 more. Substitute compatibility should be verified for your specific system.
Is 178839 still available?
178839 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026