PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 21174-00
21174-00 ✓ Verified by PartsTable
— · BALL BEARING
WHAT YOU NEED TO KNOW
2RS = sealed for life, ZZ = shielded re-greaseable ABEC grade: higher = tighter tolerance
ABEC-1 standard, ABEC-7+ for precision spindles
PRODUCT OVERVIEW

The ROLLER,TAPE GUIDE is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-432-4075, 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
21174-00
NSN: 3120-00-432-4075
FSC: 3120
CAGE: 06401 — L3 TECHNOLOGIES, INC. DBA COMMUNICATION SYSTEMS-WEST DIV COMMUNICATION SYSTEMS-WEST (USA)
SPECIFICATIONS
general_characteristics_item_descriptionSTEEL QQ-S-764 TYPE 303 O/A,0.5000 IN. MIN 0.5002 IN. MAX ID,0.6280 OD,0.5490 IN. MIN 0.5510 IN. MAX O/A LG,ID AND OD SURFACES 16 MICROINCHES AA IN
NSN3120-00-432-4075
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 21174-00 · OEM ⚠ VERIFY BEFORE ORDERING ABEC grade: higher = tighter tolerance = higher cost. ABEC-1 is standard, ABEC-7+ for precision spindles. Open, shielded (ZZ), and sealed (2RS) versions have different max RPM ratings ✓ BROKER TIP 2RS = sealed for life (no maintenance). ZZ = shielded, re-greaseable. Open = must lubricate on install. Common interchange: 6205-2RS = 6205-2RSR = 6205-DDU (same bearing, different suffix) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: STEEL QQ-S-764 TYPE 303 O/A,0.5000 IN. MIN 0.5002 IN. MAX ID,0.6280 OD,0.5490 IN. MIN 0.5510 IN. MAX O/A LG,ID AND OD SURFACES 16 MICROINCHES AA IN
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
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTEEL QQ-S-764 TYPE 303 O/A,0.5000 IN. MIN 0.5002 IN. MAX ID,0.6280 OD,0.5490 IN. MIN 0.5510 IN. MAX O/A LG,ID AND OD SURFACES 16 MICROINCHES AA IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
AA59566-BB104510FInterchangeable
interchangeable cross-reference
interchangeable
MInterchangeable
interchangeable cross-reference
interchangeable
ZZ-H-561Interchangeable
interchangeable cross-reference
interchangeable
134Interchangeable
interchangeable cross-reference
interchangeable
247PC23Interchangeable
interchangeable cross-reference
interchangeable
21174Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21174-00?
21174-00 is a ROLLER,TAPE GUIDE.
What parts can replace 21174-00?
There are 15 known substitutes for 21174-00: AA59566-BB104510F, M, ZZ-H-561 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21174-00?
21174-00 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-432-4075. 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