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Technical Data Sheet
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66-7686 — Technical Data Sheet

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— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

FILTER ELEMENT,INTAKE AIR CLEANE. Key specifications include material: COPPER ALLOY, body_style: PLAIN, corner_shape: CHAMFERED ALL CORNERS, chamfer_angle: 45.0 DEGREES NOMINAL ALL CORNERS, chamfer_length: 0.031 INCHES NOMINAL ALL CORNERS IN, overall_length: 1.125 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System under NSN 2940-00-423-0925, 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
66-7686
NSN: 2940-00-423-0925
FSC: 2940
CAGE: 0AHU0 — KALMAR AC INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY
body_stylePLAIN
corner_shapeCHAMFERED ALL CORNERS
chamfer_angle45.0 DEGREES NOMINAL ALL CORNERS
chamfer_length0.031 INCHES NOMINAL ALL CORNERS IN
overall_length1.125 INCHES NOMINAL IN
body_inside_diameter5.605 INCHES MINIMUM AND 5.608 INCHES MAXIMUM IN
body_outside_diameter6.000 INCHES MINIMUM AND 6.001 INCHES MAXIMUM IN
NSN2940-00-423-0925
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available FILTER ELEMENT,INTAKE AIR CLEANE TITLE COMPONENT PN 66-7686 MFR FILTER ELEMENT,INTAKE
KEY FEATURES
•
MATERIAL: PAPER FILTERING MEDIUM
•
STYLE DESIGNATOR: CYLINDRICAL W/ CONTAINER (RIGID)
•
BODY OVERALL LENGTH: 16.375 INCHES NOMINAL IN
•
BODY DIAMETER: 12.093 INCHES NOMINAL IN
•
BODY INSIDE DIAMETER: 7.724 INCHES NOMINAL IN
•
DESIGN TYPE: LIMITED
•
FILTERING MEDIA DESIGN: PLEATED SINGLE FILTERING MEDIA RESPONSE
TECHNICAL CHARACTERISTICS
MATERIALPAPER FILTERING MEDIUM
STYLE DESIGNATORCYLINDRICAL W/ CONTAINER (RIGID)
SPECIAL FEATURESTOP END CAP CENTER HOLE 0.900 IN. DIA IN
BODY OVERALL LENGTH16.375 INCHES NOMINAL IN
BODY DIAMETER12.093 INCHES NOMINAL IN
BODY INSIDE DIAMETER7.724 INCHES NOMINAL IN
DESIGN TYPELIMITED
FILTERING MEDIA DESIGNPLEATED SINGLE FILTERING MEDIA RESPONSE
MATERIALMETAL CONTAINER/CARTRIDGE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 30
MIL-E-1/1537InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
417CInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
8329396InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
683RH-1/4-3/8SInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
00725665410079InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
G8-1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 66-7686?
66-7686 is a FILTER ELEMENT,INTAKE AIR CLEANE.
What parts can replace 66-7686?
There are 30 known substitutes for 66-7686: MIL-E-1/1537, 417C, 8329396 and 27 more. Substitute compatibility should be verified for your specific system.
Is 66-7686 still available?
66-7686 is currently cancelled.
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Last verified: September 2026