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HF6521 — FILTER ELEMENT,FLUID

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

HF6521: FILTER ELEMENT,FLUID.

The FILTER ELEMENT,FLUID is a the manufacturer industrial component. Key specifications include design_type: NONREUSABLE, body_diameter: 3.730 INCHES NOMINAL IN, flow_direction: INSIDE OUT, style_designator: BOWL, thread_direction: RIGHT-HAND, body_overall_length: 8.000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 2940-01-435-1635, 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
HF6521
NSN: 2940-01-435-1635
FSC: 2940 — Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft
CAGE: 33457 — CUMMINS FILTRATION INC DBA FLEETGUARD DIV CUMMINS INC (USA)
SPECIFICATIONS
design_typeNONREUSABLE
body_diameter3.730 INCHES NOMINAL IN
flow_directionINSIDE OUT
style_designatorBOWL
thread_directionRIGHT-HAND
body_overall_length8.000 INCHES NOMINAL IN
end_item_identificationMC-5 COMPRESS
filtration_rating_in_microns28.000 NOMINAL
NSN2940-01-435-1635
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available FILTER ELEMENT,FLUID TITLE COMPONENT PN HF6521 MFR FILTER ELEMENT,FLUID
KEY FEATURES
•
BODY DIAMETER: 3.730 INCHES NOMINAL IN
•
BODY OVERALL LENGTH: 8.000 INCHES NOMINAL IN
•
FILTRATION RATING IN MICRONS: 28.000 NOMINAL
•
FLOW DIRECTION: INSIDE OUT
•
DESIGN TYPE: NONREUSABLE
•
STYLE DESIGNATOR: BOWL
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
BODY DIAMETER3.730 INCHES NOMINAL IN
BODY OVERALL LENGTH8.000 INCHES NOMINAL IN
FILTRATION RATING IN MICRONS28.000 NOMINAL
FLOW DIRECTIONINSIDE OUT
DESIGN TYPENONREUSABLE
STYLE DESIGNATORBOWL
THREAD DIRECTIONRIGHT-HAND
END ITEM IDENTIFICATIONMC-5 COMPRESS
OTHER ITEMS IN FSC 2940 — Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
2940-00-001-1259 2940-00-001-3513 2940-00-001-3988 2940-00-001-3991
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is HF6521?
HF6521 is a FILTER ELEMENT,FLUID.
What is the NSN for HF6521?
HF6521 is cataloged in the U.S. Government catalog under NSN 2940-01-435-1635. 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.