PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

25904Restrictor,fluid Flow

Allied Systems Company Dba Allied Systems Co · NSN 4730-01-422-5737 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-422-5737 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-422-5737. Primary manufacturer part number: 25904.
Features
  • Restrictor,fluid Flow — FSC 4730
  • Thread Provision: UNTHREADED LOCATION NOT OTHERWISE SPECIFIED
  • Design Type: TUBULAR
  • Orifice Diameter: 0.250 INCHES NOMINAL IN
  • Material: STEEL
  • Outside Diameter: 0.610 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN
  • Length: 0.875 INCHES NOMINAL IN
  • 1 verified cross-reference
Applications
  • Applications requiring Steel construction
General Description

The Restrictor,fluid Flow, cataloged under National Stock Number 4730-01-422-5737, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Allied Systems Company Dba Allied Systems Co. Government technical data includes 6 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-422-5737
Primary Part Number25904
Item NameRestrictor,fluid Flow
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerAllied Systems Company Dba Allied Systems Co
StatusACTIVE
Thread ProvisionUNTHREADED LOCATION NOT OTHERWISE SPECIFIED
Design TypeTUBULAR
Orifice Diameter0.250 INCHES NOMINAL IN
MaterialSTEEL
Outside Diameter0.610 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN
Length0.875 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
3110-00-198-1007QA62605 INTERCHANGEABLE
Roller,bearing
Timken Aerospace, Inc Dba Torrington Product
4820-00-356-17650912563 INTERCHANGEABLE
Stem,fluid Valve
Agco Corp Parts Opn
3040-01-133-412701220700 INTERCHANGEABLE
Lever,manual Control
Orscheln Products Llc
5325-01-718-397925904 INTERCHANGEABLE
Insert,screw Thread
Jergens Inc Div Tooling Components Division
Cross-Reference Index
Part NumberManufacturer
25904 PRIMARY Allied Systems Company Dba Allied Systems Co (USA)
Related Parts
3110-00-198-1007INTERCHANGEABLE
ROLLER,BEARING
QA62605
4820-00-356-1765INTERCHANGEABLE
STEM,FLUID VALVE
0912563
3040-01-133-4127INTERCHANGEABLE
LEVER,MANUAL CONTROL
01220700
5325-01-718-3979INTERCHANGEABLE
INSERT,SCREW THREAD
25904

Frequently Asked Questions

What is NSN 4730-01-422-5737?

NSN 4730-01-422-5737 is a Restrictor,fluid Flow, manufactured by Allied Systems Company Dba Allied Systems Co, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-422-5737?

NSN 4730-01-422-5737 has 1 cross-referenced part number: 25904 (Allied Systems Company Dba Allied Systems Co).

What NSN replaces 4730-01-422-5737?

There are 4 known substitutes for 4730-01-422-5737: 3110-00-198-1007, 4820-00-356-1765, 3040-01-133-4127 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 25904?

Key specifications for 25904: End Item Identification: TIC0NDEROGA CLASS CG (47); Thread Provision: UNTHREADED LOCATION NOT OTHERWISE SPECIFIED; Design Type: TUBULAR; Orifice Diameter: 0.250 INCHES NOMINAL IN. 7 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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