PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4275Valve,check

Fluid Power, Inc. · NSN 4820-00-528-2360 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-528-2360 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-528-2360. Primary manufacturer part number: 4275.
Features
  • Valve,check — FSC 4820
  • Thread Class: 3A FIRST END A
  • Nominal Outside Diameter Tube Accommodated: 0.312 INCHES FIRST END IN
  • Thread Direction: RIGHT-HAND FIRST END
  • Connection Style: FLARED (TUBE) FIRST END
  • Nominal Thread Size: 0.500 INCHES FIRST END IN
  • Mounting Position: HORIZONTAL OR VERTICAL
  • Test Data Document: 81349-MIL-V-7908 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,check, cataloged under National Stock Number 4820-00-528-2360, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Fluid Power, Inc.. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 14 commercial cross-references from 11 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-00-528-2360
Primary Part Number4275
Item NameValve,check
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerFluid Power, Inc.
StatusCANCELLED
Thread Class3A FIRST END A
Nominal Outside Diameter Tube Accommodated0.312 INCHES FIRST END IN
Thread DirectionRIGHT-HAND FIRST END
Connection StyleFLARED (TUBE) FIRST END
Nominal Thread Size0.500 INCHES FIRST END IN
Mounting PositionHORIZONTAL OR VERTICAL
Test Data Document81349-MIL-V-7908 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Seat Angle37.0 DEGREES FIRST END
Flow Control DeviceCONE
Connection TypeTHREADED EXTERNAL TUBE FIRST END
Nondefinitive Spec/std DataE STYLE
Media for Which DesignedOXYGEN, GASEOUS SINGLE RESPONSE
Thread Series DesignatorUNF FIRST END
Operating Pressure450.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Thread Quantity Per Inch20 FIRST END
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
1660-00-056-13652290 INTERCHANGEABLE
Diffuser,air,aircraft Heating an
Aerospace Lighting Corporation
6810-00-074-4251 INTERCHANGEABLE
Lead Subacetate
2940-00-111-2621AF2125 INTERCHANGEABLE
Filter Element,intake Air Cleane
Arvinmeritor Inc
4130-00-177-87744275 INTERCHANGEABLE
Modification Kit,refrigeration a
Howell Laboratories Inc Dba Howell Laboratories Inc
5306-00-348-39288810 INTERCHANGEABLE
Bolt,externally Relieved Body
General Electric Company
6670-00-450-5540 INTERCHANGEABLE
Weight Set,balance
5895-00-494-66184275 INTERCHANGEABLE
Installation Kit,electronic Equi
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
4820-00-528-2356 INTERCHANGEABLE
Valve,check
4820-00-528-2358 INTERCHANGEABLE
Valve,check
4820-00-528-2359 INTERCHANGEABLE
Valve,check
Cross-Reference Index
Part NumberManufacturer
4275 Fluid Power, Inc. (USA)
2290 Scovill Inc Schrader Bellows Div (USA)
AN6034-1 Air Force-Navy Aeronautical Specifications Promulgated by Aeronautical Standards Group
9810 Fluid Power, Inc. (USA)
MIL-PRF-7908 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
8148650 Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force (USA)
M7908-5 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
9810 Ingersoll-Rand Company Dba Ingersoll-Rand (USA)
MILV7908 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
AN6034-1 Aeronautical Standards Group Dept of Navy and Air Force (USA)
43A9032 Army Air Force Drawings Under Custodianship of the Air Force
43A9032 Aeronautical and Support Equipment Type/asetds/aflcmc/ezsc (USA)
9810 Mission Systems Orchard Park Inc (USA)
MS21211-5 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
1660-00-056-1365INTERCHANGEABLE
DIFFUSER,AIR,AIRCRAFT HEATING AN
2290
6810-00-074-4251INTERCHANGEABLE
LEAD SUBACETATE
2940-00-111-2621INTERCHANGEABLE
FILTER ELEMENT,INTAKE AIR CLEANE
AF2125
4130-00-177-8774INTERCHANGEABLE
MODIFICATION KIT,REFRIGERATION A
4275
5306-00-348-3928INTERCHANGEABLE
BOLT,EXTERNALLY RELIEVED BODY
8810
6670-00-450-5540INTERCHANGEABLE
WEIGHT SET,BALANCE
5895-00-494-6618INTERCHANGEABLE
INSTALLATION KIT,ELECTRONIC EQUI
4275
4820-00-528-2356INTERCHANGEABLE
VALVE,CHECK
4820-00-528-2358INTERCHANGEABLE
VALVE,CHECK
4820-00-528-2359INTERCHANGEABLE
VALVE,CHECK
4820-00-528-2363INTERCHANGEABLE
VALVE,CHECK
3030-00-528-4283INTERCHANGEABLE
BELT,V

Frequently Asked Questions

What is NSN 4820-00-528-2360?

NSN 4820-00-528-2360 is a Valve,check, manufactured by Fluid Power, Inc., classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-528-2360?

NSN 4820-00-528-2360 has 14 cross-referenced part numbers: 4275 (Fluid Power, Inc.), 2290 (Scovill Inc Schrader Bellows Div), AN6034-1 (Air Force-Navy Aeronautical Specifications Promulgated by Aeronautical Standards Group), 9810 (Fluid Power, Inc.), MIL-PRF-7908 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 9 more.

What NSN replaces 4820-00-528-2360?

There are 12 known substitutes for 4820-00-528-2360: 1660-00-056-1365, 6810-00-074-4251, 2940-00-111-2621 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4275?

Key specifications for 4275: Thread Class: 3A FIRST END A; Nominal Outside Diameter Tube Accommodated: 0.312 INCHES FIRST END IN; Thread Direction: RIGHT-HAND FIRST END; Connection Style: FLARED (TUBE) FIRST END. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-528-2360 still in active supply?

NSN 4820-00-528-2360 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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