PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

25921Disk,valve

Danfoss Fluid Power Inc Racine Opn · NSN 4810-01-337-4451 · FSC 4810 · No Item Name Available
Verified by PartsTable
NSN 4810-01-337-4451 — this item is cataloged by the U.S. Government under National Stock Number 4810-01-337-4451. Primary manufacturer part number: 25921.
Features
  • Disk,valve — FSC 4810
  • Style Designator: POPPET
  • Media for Which Designed: HYDRAULIC FLUID
  • 4 verified cross-references
  • Primary manufacturer: Danfoss Fluid Power Inc Racine Opn
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Disk,valve, cataloged under National Stock Number 4810-01-337-4451, is classified within Federal Supply Class 4810 (No Item Name Available) of the Valves group. The primary manufacturer of record is Danfoss Fluid Power Inc Racine Opn. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4810-01-337-4451
Primary Part Number25921
Item NameDisk,valve
FSC / FSG4810 / 48 — No Item Name Available
ManufacturerDanfoss Fluid Power Inc Racine Opn
StatusACTIVE
Style DesignatorPOPPET
Media for Which DesignedHYDRAULIC FLUID
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
3110-00-144-8540113276-17 INTERCHANGEABLE
Bearing,ball,annular
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5325-00-216-0314 INTERCHANGEABLE
Insert,screw Thread
4730-01-014-298223670 INTERCHANGEABLE
Adapter,straight,tube to Boss
Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div
4940-01-117-9043411405-001 INTERCHANGEABLE
Adapter
Gardner Denver Water Jetting Systems, Inc. Div Engineered Package Group
4940-01-283-511325921 INTERCHANGEABLE
Blast Cleaning Cabinet
Clemco Industries Corp. Dba Clemco Industries Corp Div Clemco
5340-01-371-634025921 INTERCHANGEABLE
Bumper
Hutchinson Aerospace & Industry, Inc. Dba Barry Wright Corp
6685-01-666-8727CF-1-P-070-A INTERCHANGEABLE
Gage,pressure,dial Indicating
Airline Hydraulics Corp Dba Airline Hydraulics Corp
Cross-Reference Index
Part NumberManufacturer
25921 Danfoss Fluid Power Inc Racine Opn (USA)
P91835 Jlg Industries, Inc. (USA)
P91835 Lull Lift Corp Dba Omniquip Parts Worldwide (USA)
25921 Danfoss Inc (USA)
Related Parts
3110-00-144-8540INTERCHANGEABLE
BEARING,BALL,ANNULAR
113276-17
5325-00-216-0314INTERCHANGEABLE
INSERT,SCREW THREAD
4730-01-014-2982INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO BOSS
23670
4940-01-117-9043INTERCHANGEABLE
ADAPTER
411405-001
4940-01-283-5113INTERCHANGEABLE
BLAST CLEANING CABINET
25921
5340-01-371-6340INTERCHANGEABLE
BUMPER
25921
6685-01-666-8727INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
CF-1-P-070-A

Frequently Asked Questions

What is NSN 4810-01-337-4451?

NSN 4810-01-337-4451 is a Disk,valve, manufactured by Danfoss Fluid Power Inc Racine Opn, classified under FSC 4810 (No Item Name Available). Status: active.

What are the part numbers for NSN 4810-01-337-4451?

NSN 4810-01-337-4451 has 4 cross-referenced part numbers: 25921 (Danfoss Fluid Power Inc Racine Opn), P91835 (Jlg Industries, Inc.), P91835 (Lull Lift Corp Dba Omniquip Parts Worldwide), 25921 (Danfoss Inc).

What NSN replaces 4810-01-337-4451?

There are 7 known substitutes for 4810-01-337-4451: 3110-00-144-8540, 5325-00-216-0314, 4730-01-014-2982 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 25921?

Key specifications for 25921: Style Designator: POPPET; End Item Identification: 3930-01-305-2111; Media for Which Designed: HYDRAULIC FLUID. 3 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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