PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

23421Filter,fluid

Sfc Adams, Inc. Dba Adams Sfc · NSN 4330-00-789-8456 · FSC 4330 · No Item Name Available
Verified by PartsTable
NSN 4330-00-789-8456 — this item is cataloged by the U.S. Government under National Stock Number 4330-00-789-8456. Primary manufacturer part number: 23421.
Features
  • Filter,fluid — FSC 4330
  • Features Provided: BY-PASS VALVE
  • Material: CERAMIC FILTERING MEDIUM
  • Second Intake Thread Series Designator: NPT
  • First Discharge Connection Type: THREADED EXTERNAL PIPE BOTTOM
  • FSC Application Data: COOLER UNITS,AIR
  • First Intake Thread Series Designator: NPT
  • Material: COPPER ALLOY SEDIMENT BOWL
Applications
  • Fluid filtration and purification
  • Engine intake air cleaning
  • Hydraulic system protection
  • Applications requiring Ceramic Filtering Medium construction
General Description

The Filter,fluid, cataloged under National Stock Number 4330-00-789-8456, is classified within Federal Supply Class 4330 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Sfc Adams, Inc. Dba Adams Sfc. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4330-00-789-8456
Primary Part Number23421
Item NameFilter,fluid
FSC / FSG4330 / 43 — No Item Name Available
ManufacturerSfc Adams, Inc. Dba Adams Sfc
StatusACTIVE
Features ProvidedBY-PASS VALVE
MaterialCERAMIC FILTERING MEDIUM
Second Intake Thread Series DesignatorNPT
First Discharge Connection TypeTHREADED EXTERNAL PIPE BOTTOM
FSC Application DataCOOLER UNITS,AIR
First Intake Thread Series DesignatorNPT
MaterialCOPPER ALLOY SEDIMENT BOWL
Second Intake Thread DirectionRIGHT-HAND
First Intake Connection TypeTHREADED INTERNAL PIPE SIDE
First Intake Thread DirectionRIGHT-HAND
Filtering Media DesignENCASED SINGLE FILTERING MEDIA RESPONSE
Nuclear Hardness Critical FeatureHARDENED
First Intake Nominal Thread Size0.500 INCHES IN
First Discharge Connection Relationship to Intake ConnectionNOT IDENTICAL
Operating Pressure150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
Second Intake Nominal Thread Size0.500 INCHES IN
Body Outside Diameter5.250 INCHES NOMINAL IN
Mounting TypeOUTLET CONNECTION LINE
Body Length6.500 INCHES NOMINAL IN
Filtering Element Quantity1
Design TypeREUSABLE
Filtration Rating in Microns5.00 NOMINAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4820-00-393-4309146-00614-1 INTERCHANGEABLE
Seat,valve
Grove Valve Operations
5950-00-646-121223421 INTERCHANGEABLE
Transformer,power
L3harris Technologies, Inc Div Space & Airborne Systems
5940-01-291-6322411-GP-1921-21 INTERCHANGEABLE
Terminal Board
Regal Beloit America, Inc
Cross-Reference Index
Part NumberManufacturer
CAC90738 Ogden Air Logistics Center (USA)
23421 PRIMARY Sfc Adams, Inc. Dba Adams Sfc (USA)
CAC90738 Carrier Corp (USA)
Related Parts
4820-00-393-4309INTERCHANGEABLE
SEAT,VALVE
146-00614-1
5950-00-646-1212INTERCHANGEABLE
TRANSFORMER,POWER
23421
5940-01-291-6322INTERCHANGEABLE
TERMINAL BOARD
411-GP-1921-21

Frequently Asked Questions

What is NSN 4330-00-789-8456?

NSN 4330-00-789-8456 is a Filter,fluid, manufactured by Sfc Adams, Inc. Dba Adams Sfc, classified under FSC 4330 (No Item Name Available). Status: active.

What are the part numbers for NSN 4330-00-789-8456?

NSN 4330-00-789-8456 has 3 cross-referenced part numbers: CAC90738 (Ogden Air Logistics Center), 23421 (Sfc Adams, Inc. Dba Adams Sfc), CAC90738 (Carrier Corp).

What NSN replaces 4330-00-789-8456?

There are 3 known substitutes for 4330-00-789-8456: 4820-00-393-4309, 5950-00-646-1212, 5940-01-291-6322. Verify interchangeability with system specifications before substitution.

What are the specifications of 23421?

Key specifications for 23421: Features Provided: BY-PASS VALVE; Material: CERAMIC FILTERING MEDIUM; Second Intake Thread Series Designator: NPT; First Discharge Connection Type: THREADED EXTERNAL PIPE BOTTOM. 22 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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