PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A21-8189Filter Element,fluid

Research Products Corp · NSN 4330-01-121-1811 · FSC 4330 · No Item Name Available
Verified by PartsTable
NSN 4330-01-121-1811 — this item is cataloged by the U.S. Government under National Stock Number 4330-01-121-1811. Primary manufacturer part number: A21-8189.
Features
  • Filter Element,fluid — FSC 4330
  • Design Type: REUSABLE
  • Material: ALUMINUM FILTERING MEDIUM
  • Filtering Media Design: SLIT SECOND FILTERING MEDIA RESPONSE
  • Material: ALUMINUM CONTAINER/CARTRIDGE
  • Filtering Media Design: EXPANDED FIRST FILTERING MEDIA RESPONSE
  • 3 verified cross-references
  • Primary manufacturer: Research Products Corp
Applications
  • Fluid filtration and purification
  • Engine intake air cleaning
  • Hydraulic system protection
  • Applications requiring Aluminum Filtering Medium construction
General Description

The Filter Element,fluid, cataloged under National Stock Number 4330-01-121-1811, is classified within Federal Supply Class 4330 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Research Products Corp. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4330-01-121-1811
Primary Part NumberA21-8189
Item NameFilter Element,fluid
FSC / FSG4330 / 43 — No Item Name Available
ManufacturerResearch Products Corp
StatusACTIVE
Design TypeREUSABLE
MaterialALUMINUM FILTERING MEDIUM
Filtering Media DesignSLIT SECOND FILTERING MEDIA RESPONSE
MaterialALUMINUM CONTAINER/CARTRIDGE
Filtering Media DesignEXPANDED FIRST FILTERING MEDIA RESPONSE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5910-00-128-7346MC20 INTERCHANGEABLE
Capacitor,variable,air Dielectri
Pax Mfg Corp Hammarlund Mfg Co Div
4935-00-135-094420467 INTERCHANGEABLE
Cap,valve Assy
Eaton Aerospace Llc
5930-00-224-55697460330G7 INTERCHANGEABLE
Switch,interlock
Lockheed Martin Corporation Div Rms
5305-00-619-8570 INTERCHANGEABLE
Screw,shoulder
4730-00-675-9217 INTERCHANGEABLE
Reducer,tube
5985-00-944-8544 INTERCHANGEABLE
Waveguide Assembly
3010-01-382-960320467 INTERCHANGEABLE
Gear Assembly,speed Decreaser
Ingersoll-Rand Co Material Handling Div
2540-01-644-945410028140-2 INTERCHANGEABLE
Box,accessories Stowage
Berg Manufacturing, Inc.
Cross-Reference Index
Part NumberManufacturer
24067 Ocean Technology Inc (USA)
A21-8189 PRIMARY Research Products Corp (USA)
20467 Ocean Technology Inc (USA)
Related Parts
5910-00-128-7346INTERCHANGEABLE
CAPACITOR,VARIABLE,AIR DIELECTRI
MC20
4935-00-135-0944INTERCHANGEABLE
CAP,VALVE ASSY
20467
5930-00-224-5569INTERCHANGEABLE
SWITCH,INTERLOCK
7460330G7
5305-00-619-8570INTERCHANGEABLE
SCREW,SHOULDER
4730-00-675-9217INTERCHANGEABLE
REDUCER,TUBE
5985-00-944-8544INTERCHANGEABLE
WAVEGUIDE ASSEMBLY
3010-01-382-9603INTERCHANGEABLE
GEAR ASSEMBLY,SPEED DECREASER
20467
2540-01-644-9454INTERCHANGEABLE
BOX,ACCESSORIES STOWAGE
10028140-2

Frequently Asked Questions

What is NSN 4330-01-121-1811?

NSN 4330-01-121-1811 is a Filter Element,fluid, manufactured by Research Products Corp, classified under FSC 4330 (No Item Name Available). Status: active.

What are the part numbers for NSN 4330-01-121-1811?

NSN 4330-01-121-1811 has 3 cross-referenced part numbers: 24067 (Ocean Technology Inc), A21-8189 (Research Products Corp), 20467 (Ocean Technology Inc).

What NSN replaces 4330-01-121-1811?

There are 8 known substitutes for 4330-01-121-1811: 5910-00-128-7346, 4935-00-135-0944, 5930-00-224-5569 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A21-8189?

Key specifications for A21-8189: Design Type: REUSABLE; Material: ALUMINUM FILTERING MEDIUM; Filtering Media Design: SLIT SECOND FILTERING MEDIA RESPONSE; Material: ALUMINUM CONTAINER/CARTRIDGE. 5 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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