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999-56040-0300 — BALL,BEARING

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

999-56040-0300: BALL,BEARING.

The BALL,BEARING is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, special_features: METALLIC HARDNESS RATING BRINELL STANDARD MIN 625.0 IN. AND MAX 700.0 IN, rolling_element_diameter: 0.6250 INCHES NOMINAL IN.

This part is cataloged in the U.S. Government catalog under NSN 3110-00-151-9148, 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
999-56040-0300
NSN: 3110-00-151-9148
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL OVERALL
special_featuresMETALLIC HARDNESS RATING BRINELL STANDARD MIN 625.0 IN. AND MAX 700.0 IN
rolling_element_diameter0.6250 INCHES NOMINAL IN
NSN3110-00-151-9148
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 999-56040-0300 · 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: 0.6250 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
ROLLING ELEMENT DIAMETER0.6250 INCHES NOMINAL IN
SPECIAL FEATURESMETALLIC HARDNESS RATING BRINELL STANDARD MIN 625.0 IN. AND MAX 700.0 IN
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 6
145659Reference document
Same NSN cross-reference
Reference document — Secondary reference
295MAM1Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
722187Reference document
Same NSN cross-reference
Reference document — Secondary reference
216-3-40Reference document
Same NSN cross-reference
Reference document — Secondary reference
19B4753PC12Reference document
Same NSN cross-reference
Reference document — Secondary reference
5-8BALLGRADE3Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 999-56040-0300?
999-56040-0300 is a BALL,BEARING.
What parts can replace 999-56040-0300?
There are 6 known substitutes for 999-56040-0300: 145659, 295MAM1, 722187 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 999-56040-0300?
999-56040-0300 is cataloged in the U.S. Government catalog under NSN 3110-00-151-9148. 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.