PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21270-1000-1Disk,valve

Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace · NSN 4820-01-503-2623 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-503-2623 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-503-2623. Primary manufacturer part number: 21270-1000-1.
Features
  • Disk,valve — FSC 4820
  • Material: COPPER ALLOY
  • Pressure Rating: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
  • Media for Which Designed: HYDRAULIC FLUID
  • 3 verified cross-references
  • Primary manufacturer: Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy construction
General Description

The Disk,valve, cataloged under National Stock Number 4820-01-503-2623, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-503-2623
Primary Part Number21270-1000-1
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerSargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
StatusACTIVE
MaterialCOPPER ALLOY
Pressure Rating3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
Media for Which DesignedHYDRAULIC FLUID
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5965-00-280-3111SC-C-105391 INTERCHANGEABLE
Cushion,ear
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
6685-00-731-595810440MR INTERCHANGEABLE
Thermometer,self-Indicating
Winters Instruments
5935-01-058-64885082-2240-00 INTERCHANGEABLE
Adapter,connector
Tyco Electronics Corp
4235-01-391-204721270 INTERCHANGEABLE
Sorbent,hazardous Material
A.r.k. Enterprises, Inc., the
1005-01-465-040112951011 INTERCHANGEABLE
Handle,gun Carrying
Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate
4820-01-503-249721270-001 INTERCHANGEABLE
Valve Assembly,manifold
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
4820-01-503-261009-21243-1-1 INTERCHANGEABLE
Valve,check
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
4820-01-503-261821270-1003-1 INTERCHANGEABLE
Seat,valve
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
4820-01-503-262121270-1004-1 INTERCHANGEABLE
Retainer,quiet Element
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
4820-01-503-686221270-801-1 INTERCHANGEABLE
Regulating Element,flow,valve
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
Cross-Reference Index
Part NumberManufacturer
21270-1000-1 PRIMARY Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
21270 Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
21270-7 Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
Related Parts
5965-00-280-3111INTERCHANGEABLE
CUSHION,EAR
SC-C-105391
6685-00-731-5958INTERCHANGEABLE
THERMOMETER,SELF-INDICATING
10440MR
5935-01-058-6488INTERCHANGEABLE
ADAPTER,CONNECTOR
5082-2240-00
4235-01-391-2047INTERCHANGEABLE
SORBENT,HAZARDOUS MATERIAL
21270
1005-01-465-0401INTERCHANGEABLE
HANDLE,GUN CARRYING
12951011
4820-01-503-2497INTERCHANGEABLE
VALVE ASSEMBLY,MANIFOLD
21270-001
4820-01-503-2610INTERCHANGEABLE
VALVE,CHECK
09-21243-1-1
4820-01-503-2618INTERCHANGEABLE
SEAT,VALVE
21270-1003-1
4820-01-503-2621INTERCHANGEABLE
RETAINER,QUIET ELEMENT
21270-1004-1
4820-01-503-6862INTERCHANGEABLE
REGULATING ELEMENT,FLOW,VALVE
21270-801-1
5950-01-529-6526INTERCHANGEABLE
TRANSFORMER,POWER
21270
5340-01-587-5793INTERCHANGEABLE
CAP,PROTECTIVE,DUST AND MOISTURE
212707

Frequently Asked Questions

What is NSN 4820-01-503-2623?

NSN 4820-01-503-2623 is a Disk,valve, manufactured by Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-503-2623?

NSN 4820-01-503-2623 has 3 cross-referenced part numbers: 21270-1000-1 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace), 21270 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace), 21270-7 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace).

What NSN replaces 4820-01-503-2623?

There are 12 known substitutes for 4820-01-503-2623: 5965-00-280-3111, 6685-00-731-5958, 5935-01-058-6488 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21270-1000-1?

Key specifications for 21270-1000-1: Material: COPPER ALLOY; End Item Identification: NHA 4820-01-503-2497 RESTRICTOR MANIFOLD VALVE ASSY; SEAWOLF CLASS SSN; Special Features: MFR CALLS ITEM "PLUNGER"; PLUNGER OPERATES IN CONJUNCTION WITH THE ADJUST SCREW (21270-1005-1) TO CONTROL FLOW INTO QUIET ELEMENT AS WELL AS THE REST OF THE VALVE; MATERIAL IAW ASTM B150 C63200 WITH ALTERNATE MATERIAL IAW ASTM B150 C63000 OR C64200; Pressure Rating: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS. 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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