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Technical Data Sheet
6B1851 ✓ Verified by PartsTable
· COMPONENT
WHAT YOU NEED TO KNOW
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Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The COVER,FLUID FILTER is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, hole_diameter: 0.859 INCHES NOMINAL IN, body_thickness: 1.000 INCHES NOMINAL IN, flange_thickness: 0.218 INCHES NOMINAL IN, outside_diameter: 3.922 INCHES NOMINAL IN, attachment_method: BOLTED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4330-00-351-6367, 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
6B1851
NSN: 4330-00-351-6367
FSC: 4330
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialCOPPER ALLOY
hole_diameter0.859 INCHES NOMINAL IN
body_thickness1.000 INCHES NOMINAL IN
flange_thickness0.218 INCHES NOMINAL IN
outside_diameter3.922 INCHES NOMINAL IN
attachment_methodBOLTED
peripheral_shape_styleCIRCULAR
first_recess_inside_height8.906 INCHES NOMINAL IN
hole_quantity_along_length1
cross-sectional_shape_styleRECESS, SAME SHAPE AS THE PERIPHERY
mounting_opening_shape_styleUNTHREADED HOLE
fluid_filter_element_retainerNOT INCLUDED
NSN4330-00-351-6367
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available COVER,FLUID FILTER TITLE COMPONENT PN 6B1851 MFR COVER,FLUID FILTER
KEY FEATURES
MOUNTING OPENING SHAPE STYLE: UNTHREADED HOLE
ATTACHMENT METHOD: BOLTED
MATERIAL: COPPER ALLOY
CROSS-SECTIONAL SHAPE STYLE: RECESS, SAME SHAPE AS THE PERIPHERY
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG LENGTH: 1.900 INCHES NOMINAL IN
FIRST RECESS INSIDE HEIGHT: 8.906 INCHES NOMINAL IN
OUTSIDE DIAMETER: 3.922 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLE: CIRCULAR
TECHNICAL CHARACTERISTICS (FLIS)
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
ATTACHMENT METHODBOLTED
MATERIALCOPPER ALLOY
CROSS-SECTIONAL SHAPE STYLERECESS, SAME SHAPE AS THE PERIPHERY
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG LENGTH1.900 INCHES NOMINAL IN
FIRST RECESS INSIDE HEIGHT8.906 INCHES NOMINAL IN
OUTSIDE DIAMETER3.922 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLECIRCULAR
FLUID FILTER ELEMENT RETAINERNOT INCLUDED
HOLE DIAMETER0.859 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
22-860Interchangeable
interchangeable cross-reference
interchangeable
17730-3PCFInterchangeable
interchangeable cross-reference
interchangeable
17730-3PC.FInterchangeable
interchangeable cross-reference
interchangeable
306168Interchangeable
interchangeable cross-reference
interchangeable
365617-2Interchangeable
interchangeable cross-reference
interchangeable
B22860Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 6B1851?
6B1851 is a COVER,FLUID FILTER.
What parts can replace 6B1851?
There are 15 known substitutes for 6B1851: 22-860, 17730-3PCF, 17730-3PC.F and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 6B1851?
6B1851 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4330-00-351-6367. This indicates validated use in U.S. government and defense supply chains.
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