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6860491 — BASE ASSY,GUN MOUNT

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

6860491: BASE ASSY,GUN MOUNT.

The BASE ASSY,GUN MOUNT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, overall_length: 0.2810 INCHES MINIMUM AND 0.2814 INCHES MAXIMUM IN, style_designator: CYLINDRICAL ROLLER, FLAT ENDS, rolling_element_diameter: 0.2812 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-081-1908, 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
6860491
NSN: 3110-00-081-1908
NIINs: 000811908, 007948614
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: K0680 — ROLLS-ROYCE AIRLINES (GBR)
SPECIFICATIONS
materialSTEEL OVERALL
overall_length0.2810 INCHES MINIMUM AND 0.2814 INCHES MAXIMUM IN
style_designatorCYLINDRICAL ROLLER, FLAT ENDS
rolling_element_diameter0.2812 INCHES NOMINAL IN
NSN3110-00-081-1908
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 6860491 · 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
•
ROLLING ELEMENT DIAMETER: 0.2812 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CYLINDRICAL ROLLER, FLAT ENDS
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
ROLLING ELEMENT DIAMETER0.2812 INCHES NOMINAL IN
STYLE DESIGNATORCYLINDRICAL ROLLER, FLAT ENDS
OVERALL LENGTH0.2810 INCHES MINIMUM AND 0.2814 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
EU40540Reference 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 6860491?
6860491 is a BASE ASSY,GUN MOUNT.
What parts can replace 6860491?
There is 1 known substitute for 6860491: EU40540. Substitute compatibility should be verified for your specific system.
What is the NSN for 6860491?
6860491 is cataloged in the U.S. Government catalog under NSN 3110-00-081-1908. 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.