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Technical Data Sheet
PartsTable / COMPONENT / M478
M478 ✓ Verified by PartsTable
— · 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

OSCILLATOR,NONCRYSTAL CONTROLLED. Key specifications include material: COPPER ALLOY 932 OVERALL, cup_width: 0.6250 INCHES NOMINAL IN, cone_width: 0.7620 INCHES NOMINAL IN, corner_shape: SQUARE ALL CORNERS, bore_diameter: 1.0000 INCHES NOMINAL IN, overall_width: 0.7813 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-4454, 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
M478
NSN: 3110-00-100-4454
FSC: 3110
CAGE: 25947 — GRAVELY INTERNATIONAL INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY 932 OVERALL
cup_width0.6250 INCHES NOMINAL IN
cone_width0.7620 INCHES NOMINAL IN
corner_shapeSQUARE ALL CORNERS
bore_diameter1.0000 INCHES NOMINAL IN
overall_width0.7813 INCHES NOMINAL IN
overall_length0.9950 INCHES MINIMUM AND 1.0050 INCHES MAXIMUM IN
standout_width0.1563 INCHES NOMINAL IN
surface_finish63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
cone_corner_radius0.0460 INCHES NOMINAL IN
body_inside_diameter0.2490 INCHES MINIMUM AND 1.0050 INCHES MAXIMUM IN
NSN3110-00-100-4454
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: M478 · 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
•
STANDOUT WIDTH: 0.1563 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
CUP WIDTH: 0.6250 INCHES NOMINAL IN
•
CONE WIDTH: 0.7620 INCHES NOMINAL IN
•
BACKFACE CORNER RADIUS: 0.0460 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT BORE, NORMAL ANGLE
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL WIDTH0.7813 INCHES NOMINAL IN
STANDOUT WIDTH0.1563 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
CUP WIDTH0.6250 INCHES NOMINAL IN
CONE WIDTH0.7620 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.0460 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT BORE, NORMAL ANGLE
BORE DIAMETER1.0000 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER2.3125 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
001-1002-00-0-479Interchangeable
interchangeable cross-reference
interchangeable
301-24Interchangeable
interchangeable cross-reference
interchangeable
FTSM7Interchangeable
interchangeable cross-reference
interchangeable
1793-3Interchangeable
interchangeable cross-reference
interchangeable
B-2Interchangeable
interchangeable cross-reference
interchangeable
M47-8Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M478?
M478 is a OSCILLATOR,NONCRYSTAL CONTROLLED.
What parts can replace M478?
There are 19 known substitutes for M478: 001-1002-00-0-479, 301-24, FTSM7 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M478?
M478 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-4454. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026