PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21573Filter Element,fluid

Monarch Machine Tool Co the · NSN 2940-01-539-4771 · FSC 2940 · No Item Name Available
Verified by PartsTable
NSN 2940-01-539-4771 — this item is cataloged by the U.S. Government under National Stock Number 2940-01-539-4771. Primary manufacturer part number: 21573.
Features
  • Filter Element,fluid — FSC 2940
  • 1 verified cross-reference
  • Primary manufacturer: Monarch Machine Tool Co the
Applications
  • Fluid filtration and purification
  • Engine intake air cleaning
  • Hydraulic system protection
General Description

The Filter Element,fluid, cataloged under National Stock Number 2940-01-539-4771, is classified within Federal Supply Class 2940 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Monarch Machine Tool Co the. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2940-01-539-4771
Primary Part Number21573
Item NameFilter Element,fluid
FSC / FSG2940 / 29 — No Item Name Available
ManufacturerMonarch Machine Tool Co the
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5905-00-626-3754 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
6130-00-734-462523408MI INTERCHANGEABLE
Power Supply
Ducommun Labarge Technologies, Inc Dba Ducommun Labarge Technologies, Inc
5965-00-739-206366B853 INTERCHANGEABLE
Cushion,microphone
Air Force Lifecycle Management Center Electronic Components (aflcmc/ezss)
5331-00-926-93491557052-8 INTERCHANGEABLE
O-Ring
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5998-01-080-468321573 INTERCHANGEABLE
Circuit Card Assembly
United States Department of the Navy Dba Naval Undersea Warfare Ctr Div
Cross-Reference Index
Part NumberManufacturer
21573 PRIMARY Monarch Machine Tool Co the (USA)
Related Parts
5905-00-626-3754INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
6130-00-734-4625INTERCHANGEABLE
POWER SUPPLY
23408MI
5965-00-739-2063INTERCHANGEABLE
CUSHION,MICROPHONE
66B853
5331-00-926-9349INTERCHANGEABLE
O-RING
1557052-8
5998-01-080-4683INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
21573

Frequently Asked Questions

What is NSN 2940-01-539-4771?

NSN 2940-01-539-4771 is a Filter Element,fluid, manufactured by Monarch Machine Tool Co the, classified under FSC 2940 (No Item Name Available). Status: active.

What are the part numbers for NSN 2940-01-539-4771?

NSN 2940-01-539-4771 has 1 cross-referenced part number: 21573 (Monarch Machine Tool Co the).

What NSN replaces 2940-01-539-4771?

There are 5 known substitutes for 2940-01-539-4771: 5905-00-626-3754, 6130-00-734-4625, 5965-00-739-2063 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21573?

Key specifications for 21573: Part Name Assigned by Controlling Agency: FILTER, OIL HYDRAULIC; End Item Identification: LATHE, ENGINE, MODEL 614. 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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