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Technical Data Sheet
PartsTable / MRO / 6721
6721 ✓ Verified by PartsTable
Giochi Preziosi · MRO · MRO_GENERAL
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

CAPACITOR,VARIABLE,AIR DIELECTRI. Key specifications include material: BRASS CASE, body_style: PISTON, cup_height: 0.625 INCHES NOMINAL IN, head_style: BINDING, scale_type: DIAL, body_length: 0.312 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-157-3726, 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→ 6721
NSN: 3110-00-157-3726
FSC: 3110
CAGE: 43766 — SKF INDUSTRIES INC NICE BEARING PRODUCTS DIV (USA)
SPECIFICATIONS
materialBRASS CASE
body_stylePISTON
cup_height0.625 INCHES NOMINAL IN
head_styleBINDING
scale_typeDIAL
body_length0.312 INCHES NOMINAL IN
head_height0.046 INCHES NOMINAL IN
corner_shapeSQUARE ALL CORNERS
cup_diameter1.750 INCHES NOMINAL IN
flange_width0.0620 INCHES NOMINAL IN
thread_class2A A
head_diameter0.181 INCHES NOMINAL IN
NSN3110-00-157-3726
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 6721 · Giochi Preziosi ⚠ 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
•
SURFACE FINISH: GROUND
•
ALIGNMENT TYPE: RIGID
•
OVERALL OUTSIDE DIAMETER: 3.5000 INCHES NOMINAL IN
•
THRUST DIRECTIONAL CAPABILITY DESIGNATION: SINGLE
•
BORE SMALLEST DIAMETER: 2.2600 INCHES MINIMUM AND 2.2700 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: CLUTCH RELEASE, THRUST, LUBRICATED AND SEALED
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE FINISHGROUND
ALIGNMENT TYPERIGID
OVERALL OUTSIDE DIAMETER3.5000 INCHES NOMINAL IN
THRUST DIRECTIONAL CAPABILITY DESIGNATIONSINGLE
BORE SMALLEST DIAMETER2.2600 INCHES MINIMUM AND 2.2700 INCHES MAXIMUM IN
SPECIAL FEATURESBRONZE FERRULE ON ID OF ONE WASHER,WASHERS OVERLAP
OVERALL HEIGHT0.7250 INCHES MINIMUM AND 0.7350 INCHES MAXIMUM IN
STYLE DESIGNATORCLUTCH RELEASE, THRUST, LUBRICATED AND SEALED
MATERIALCOPPER ALLOY RETAINER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
A-A-50439-1Interchangeable
interchangeable cross-reference
interchangeable
X951225Interchangeable
interchangeable cross-reference
interchangeable
849546-10Interchangeable
interchangeable cross-reference
interchangeable
22618Interchangeable
interchangeable cross-reference
interchangeable
24099Interchangeable
interchangeable cross-reference
interchangeable
31605Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 6721?
6721 is a CAPACITOR,VARIABLE,AIR DIELECTRI manufactured by Giochi Preziosi. It is classified as a MRO (MRO_GENERAL).
What parts can replace 6721?
There are 24 known substitutes for 6721: A-A-50439-1, X951225, 849546-10 and 21 more. Substitute compatibility should be verified for your specific system.
Is 6721 still available?
6721 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026