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Technical Data Sheet
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20408 — BEARING,BALL,ANNULAR

✓ Government record, cited
Legrand · MRO · MRO_GENERAL
PRODUCT OVERVIEW

20408: BEARING,BALL,ANNULAR.

- Comfortable meshed ear pads for long and intense gaming sessions - Adjustable headband and flexible microphone - On-earcap volume control and microphone mute - High quality sound with deep bass - Anti-tangle nylon braided cable (2m) This part is cataloged in the U.S. Government catalog under NSN 3110-00-156-6833, 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
MRO→ MRO_GENERAL→ 20408
NSN: 3110-00-156-6833
NIINs: 001566833, 002049123, 003361782, 005777313, 010926400, 014531054, 016761956
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
body_width1.050 INCHES MAXIMUM IN
body_height0.750 INCHES MAXIMUM IN
body_length1.420 INCHES MAXIMUM IN
body_materialMETAL
bore_diameter40.00 MILLIMETERS NOMINAL MM
overall_width27.0 MILLIMETERS NOMINAL MM
inclosure_typeENCASED
load_directionANGULAR
overall_height0.990 INCHES MAXIMUM IN
surface_finishGROUND
special_featuresANSULITE AFC-3DC 3% AFFF
NSN3110-00-156-6833
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 20408 · Legrand ⚠ 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
•
RETAINER FABRICATION METHOD: PRESSED
•
SURFACE FINISH: GROUND
•
BEARING PRELOAD DESIGNATION: LIGHT
•
STYLE DESIGNATOR: UNIVERSAL GROUND FACES, COUNTERBORED OUTER RING, NON-SEPARABLE
•
OVERALL OUTSIDE DIAMETER: 110.00 MILLIMETERS NOMINAL MM
•
LOAD DIRECTION: ANGULAR
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.1
TECHNICAL CHARACTERISTICS
RETAINER FABRICATION METHODPRESSED
SURFACE FINISHGROUND
BEARING PRELOAD DESIGNATIONLIGHT
STYLE DESIGNATORUNIVERSAL GROUND FACES, COUNTERBORED OUTER RING, NON-SEPARABLE
OVERALL WIDTH27.0 MILLIMETERS NOMINAL MM
OVERALL OUTSIDE DIAMETER110.00 MILLIMETERS NOMINAL MM
LOAD DIRECTIONANGULAR
STANDARD TOLERANCE DESIGNATIONABEC NO.1
BORE DIAMETER40.00 MILLIMETERS NOMINAL MM
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 7
H20408DTL1AReference document
Same NSN cross-reference
Reference document — Secondary reference
20408DUReference document
Same NSN cross-reference
Reference document — Secondary reference
7408C1TX9Reference document
Same NSN cross-reference
Reference document — Secondary reference
20408DTReference document
Same NSN cross-reference
Reference document — Secondary reference
FF-B-171Reference document
Same NSN cross-reference
Reference document — Secondary reference
7408DTReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 20408?
20408 is a BEARING,BALL,ANNULAR manufactured by Legrand. It is classified as a MRO (MRO_GENERAL).
What parts can replace 20408?
There are 7 known substitutes for 20408: H20408DTL1A, 20408DU, 7408C1TX9 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 20408?
20408 is cataloged in the U.S. Government catalog under NSN 3110-00-156-6833. 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.