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A-A-51154 — CUP,TAPERED ROLLER BEARING

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

A-A-51154: CUP,TAPERED ROLLER BEARING.

The CUP,TAPERED ROLLER BEARING is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include shape: STRAIGHT, length: 2.000 INCHES NOMINAL IN, diameter: 0.250 INCHES NOMINAL IN, material: TUNGSTEN CARBIDE, mounting_shank: INCLUDED, overall_diameter: 0.438 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3455-00-021-2409, 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
A-A-51154
NSN: 3455-00-021-2409
NIINs: 000212409, 000212410, 000234277, 000882448, 001872561, 001872570, 002224064, 002248925, 002523698, 002523699, 002523700, 002523701, 002689691, 002758331, 004555435, 004559061, 005441411, 005671413, 005671462, 007388080, 009531273, 009531459, 010256055, 010336394, 010336395, 010340355, 010415028, 010416792, 010420897, 010424839, 010459154, 010478589, 010500982, 011030247
FSC: 3455 — Cutting Tools for Machine Tools
CAGE: 58536 — FEDERAL COMMERCIAL ITEM DESCRIPTION PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
shapeSTRAIGHT
length2.000 INCHES NOMINAL IN
diameter0.250 INCHES NOMINAL IN
materialTUNGSTEN CARBIDE
mounting_shankINCLUDED
overall_diameter0.438 INCHES NOMINAL IN
special_featuresRIGHT HAND SPRIRAL FLUTING
style_designatorBALL SHAPE
features_providedCHIPBREAKER
removability_featureNOT INCLUDED
shank_overall_length2.438 INCHES NOMINAL IN
cutter_tooth_cut_styleMEDIUM
NSN3455-00-021-2409
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CUP,TAPERED ROLLER BEARING TITLE COMPONENT PN A-A-51154 MFR CUP,TAPERED ROLLER BEA
TYPICAL APPLICATIONS
  • Long-term data archival and compliance retention
  • Offsite backup and disaster recovery
  • Air-gapped ransomware protection
  • Cold storage tier for infrequently accessed data
SUBSTITUTES & CROSS-REFERENCES 7
SD-41Reference document
Same NSN cross-reference
Reference document — Secondary reference
155263Reference document
Same NSN cross-reference
Reference document — Secondary reference
A-A-51154B-2A2BReference document
Same NSN cross-reference
Reference document — Secondary reference
12775Reference document
Same NSN cross-reference
Reference document — Secondary reference
9TD2BWReference document
Same NSN cross-reference
Reference document — Secondary reference
32.853-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A-A-51154?
A-A-51154 is a CUP,TAPERED ROLLER BEARING.
What parts can replace A-A-51154?
There are 7 known substitutes for A-A-51154: SD-41, 155263, A-A-51154B-2A2B and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A-A-51154?
A-A-51154 is cataloged in the U.S. Government catalog under NSN 3455-00-021-2409. 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.