PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

437306Filter,duplex

Donaldson Company, Inc. · NSN 4330-01-631-0841 · FSC 4330 · No Item Name Available
Verified by PartsTable
NSN 4330-01-631-0841 — this item is cataloged by the U.S. Government under National Stock Number 4330-01-631-0841. Primary manufacturer part number: 437306.
Features
  • Filter,duplex — FSC 4330
  • Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVSUP-WSS ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS
  • Criticality Code Justification: ZZZY
  • 1 verified cross-reference
  • Primary manufacturer: Donaldson Company, Inc.
Applications
  • Fluid filtration and purification
  • Engine intake air cleaning
  • Hydraulic system protection
General Description

The Filter,duplex, cataloged under National Stock Number 4330-01-631-0841, is classified within Federal Supply Class 4330 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Donaldson Company, Inc.. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4330-01-631-0841
Primary Part Number437306
Item NameFilter,duplex
FSC / FSG4330 / 43 — No Item Name Available
ManufacturerDonaldson Company, Inc.
StatusACTIVE
Reference Number Differentiating CharacteristicsMATERIAL WILL BE IN ACCORDANCE WITH NAVSUP-WSS ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS
Criticality Code JustificationZZZY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5961-01-061-4960F20 INTERCHANGEABLE
Semiconductor Device,diode
Semtech Corporation
3040-01-192-5721 INTERCHANGEABLE
Piston,linear Actuating Cylinder
Cross-Reference Index
Part NumberManufacturer
437306 Donaldson Company, Inc. (USA)
Related Parts
5961-01-061-4960INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
F20
3040-01-192-5721INTERCHANGEABLE
PISTON,LINEAR ACTUATING CYLINDER

Frequently Asked Questions

What is NSN 4330-01-631-0841?

NSN 4330-01-631-0841 is a Filter,duplex, manufactured by Donaldson Company, Inc., classified under FSC 4330 (No Item Name Available). Status: active.

What are the part numbers for NSN 4330-01-631-0841?

NSN 4330-01-631-0841 has 1 cross-referenced part number: 437306 (Donaldson Company, Inc.).

What NSN replaces 4330-01-631-0841?

There are 2 known substitutes for 4330-01-631-0841: 5961-01-061-4960, 3040-01-192-5721. Verify interchangeability with system specifications before substitution.

What are the specifications of 437306?

Key specifications for 437306: Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVSUP-WSS ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS; Criticality Code Justification: ZZZY. 2 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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