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Technical Data Sheet
PartsTable / COMPONENT / 21221
21221 ✓ Verified by PartsTable
Braun · 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

- Elegant design<br>- Premium hard synthetic material (ABS + Polycarbonate), brilliancy polished<br>- USB 3.0 interface 5 Gbit/s<br>- LED for power and HDD access<br>- HDD height up to 9.5 mm<br>- HDD capacity no limit This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-367-1793, 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
21221
NSN: 3120-00-367-1793
FSC: 3120
CAGE: 76122 — INDUSTRIAL TECHNOLOGIES AND SERVICES LLC (USA)
SPECIFICATIONS
phaseTHREE
end_typeROUND FEMALE
materialSTEEL COMP 416
unit_typeWIRE WOUND
slot_width0.1562 INCHES NOMINAL FIRST IN
slot_length1.2500 INCHES NOMINAL FIRST IN
corner_shapeSQUARE ALL CORNERS
current_typeAC OR DC
shank_length0.062 INCHES NOMINAL IN
spindle_typeSINGLE
body_materialALUMINUM ALLOY
overall_length3.625 INCHES NOMINAL IN
NSN3120-00-367-1793
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 21221 · Braun ⚠ 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
•
MATERIAL: COPPER ALLOY 932 OVERALL
•
SLOT WIDTH: 0.1562 INCHES NOMINAL FIRST IN
•
SLOT LENGTH: 1.2500 INCHES NOMINAL FIRST IN
•
BODY OUTSIDE DIAMETER: 1.1250 INCHES NOMINAL IN
•
CORNER SHAPE: SQUARE ALL CORNERS
•
SURFACE GROOVE LOCATION AND QUANTITY: 1 INTERNAL
•
BODY INSIDE DIAMETER: 0.9875 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
TYPICAL APPLICATIONS
  • Server Internal Cabling
  • Data Center Cable Infrastructure
  • SAS/SATA Drive Connectivity
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOPPER ALLOY 932 OVERALL
SLOT WIDTH0.1562 INCHES NOMINAL FIRST IN
SLOT LENGTH1.2500 INCHES NOMINAL FIRST IN
BODY OUTSIDE DIAMETER1.1250 INCHES NOMINAL IN
CORNER SHAPESQUARE ALL CORNERS
SURFACE GROOVE LOCATION AND QUANTITY1 INTERNAL
BODY INSIDE DIAMETER0.9875 INCHES NOMINAL IN
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
ANTIROTATION/LUBRICATION TYPE AND QUANTITY1 SLOT
LUBRICANT ACCOMMODATION STYLEGROOVED CLOSED BOTH ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
21221Interchangeable
interchangeable cross-reference
interchangeable
500906-2Interchangeable
interchangeable cross-reference
interchangeable
402444Interchangeable
interchangeable cross-reference
interchangeable
153Interchangeable
interchangeable cross-reference
interchangeable
CL-2-SWA-3Interchangeable
interchangeable cross-reference
interchangeable
26021Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21221?
21221 is a CABLE ASSEMBLY,SPECIAL PURPOSE,E manufactured by Braun.
What parts can replace 21221?
There are 16 known substitutes for 21221: 21221, 500906-2, 402444 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21221?
21221 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-367-1793. 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