PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6B1851Cover,fluid Filter

Caterpillar Inc Div Caterpillar Defense · NSN 4330-00-351-6367 · FSC 4330 · No Item Name Available
Verified by PartsTable
NSN 4330-00-351-6367 — this item is cataloged by the U.S. Government under National Stock Number 4330-00-351-6367. Primary manufacturer part number: 6B1851.
Features
  • Cover,fluid Filter — FSC 4330
  • 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
Applications
  • Fluid filtration and purification
  • Engine intake air cleaning
  • Hydraulic system protection
  • Applications requiring Copper Alloy construction
General Description

The Cover,fluid Filter, cataloged under National Stock Number 4330-00-351-6367, is classified within Federal Supply Class 4330 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4330-00-351-6367
Primary Part Number6B1851
Item NameCover,fluid Filter
FSC / FSG4330 / 43 — No Item Name Available
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusACTIVE
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
Body Thickness1.000 INCHES NOMINAL IN
Flange Thickness0.218 INCHES NOMINAL IN
Hole Quantity Along Length1
Mounting Hole Type and Quantity1 PLAIN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5895-00-126-6325 INTERCHANGEABLE
Spring,cathode Stud
5935-00-234-6867 INTERCHANGEABLE
Connector,electrical
5985-00-482-2907365617-2 INTERCHANGEABLE
Coupler,directional
L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products
4730-01-118-098923-1C8-8F INTERCHANGEABLE
Coupling Half,quick Disconnect
Parker-Hannifin Corporation Dba Pneutronics Div Quick Coupler Division
4720-01-281-51902-2860 INTERCHANGEABLE
Hose Assembly,nonmetallic
Maytag Corporation Dba Maytag Appliancessales
5998-01-315-244722860-102 INTERCHANGEABLE
Circuit Card Assembly
Fisica Applied Technologies, Inc. Div Datron Advanced Technologies
5998-01-315-244822860-101 INTERCHANGEABLE
Circuit Card Assembly
Fisica Applied Technologies, Inc. Div Datron Advanced Technologies
6520-01-385-047429798 INTERCHANGEABLE
Resin,restorative,dental
Kerr Corporation
6520-01-593-222690-2803 INTERCHANGEABLE
Case,dental Operating Unit
Asi Medical, Inc. Dba Asi Medical Inc
Cross-Reference Index
Part NumberManufacturer
6B1851 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
22860 PRIMARY Arvinmeritor Inc (USA)
Related Parts
5895-00-126-6325INTERCHANGEABLE
SPRING,CATHODE STUD
5935-00-234-6867INTERCHANGEABLE
CONNECTOR,ELECTRICAL
5985-00-482-2907INTERCHANGEABLE
COUPLER,DIRECTIONAL
365617-2
4730-01-118-0989INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
23-1C8-8F
4720-01-281-5190INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
2-2860
5998-01-315-2447INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
22860-102
5998-01-315-2448INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
22860-101
6520-01-385-0474INTERCHANGEABLE
RESIN,RESTORATIVE,DENTAL
29798
6520-01-593-2226INTERCHANGEABLE
CASE,DENTAL OPERATING UNIT
90-2803

Frequently Asked Questions

What is NSN 4330-00-351-6367?

NSN 4330-00-351-6367 is a Cover,fluid Filter, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 4330 (No Item Name Available). Status: active.

What are the part numbers for NSN 4330-00-351-6367?

NSN 4330-00-351-6367 has 2 cross-referenced part numbers: 6B1851 (Caterpillar Inc Div Caterpillar Defense), 22860 (Arvinmeritor Inc).

What NSN replaces 4330-00-351-6367?

There are 9 known substitutes for 4330-00-351-6367: 5895-00-126-6325, 5935-00-234-6867, 5985-00-482-2907 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6B1851?

Key specifications for 6B1851: Mounting Opening Shape Style: UNTHREADED HOLE; Attachment Method: BOLTED; Material: COPPER ALLOY; Cross-Sectional Shape Style: RECESS, SAME SHAPE AS THE PERIPHERY. 14 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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