PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A1725Disk,valve

Anderson Greenwood Lp Dba Anderson Greenwood Crosby · NSN 4820-00-056-6986 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-056-6986 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-056-6986. Primary manufacturer part number: A1725.
Features
  • Disk,valve — FSC 4820
  • Flange Seat to Disk End Height: 0.365 INCHES NOMINAL IN
  • Material: COPPER ALLOY
  • Seat Angle: 45.0 DEGREES NOMINAL
  • Outside Diameter: 1.375 INCHES NOMINAL IN
  • 1 verified cross-reference
  • Primary manufacturer: Anderson Greenwood Lp Dba Anderson Greenwood Crosby
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 4820-00-056-6986, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Anderson Greenwood Lp Dba Anderson Greenwood Crosby. Government technical data includes 4 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-056-6986
Primary Part NumberA1725
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerAnderson Greenwood Lp Dba Anderson Greenwood Crosby
StatusACTIVE
Flange Seat to Disk End Height0.365 INCHES NOMINAL IN
MaterialCOPPER ALLOY
Seat Angle45.0 DEGREES NOMINAL
Outside Diameter1.375 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5305-00-010-0819100819 INTERCHANGEABLE
Screw,machine
Chrysler Realty Company Llc Dba Daimler Chrysler
Cross-Reference Index
Part NumberManufacturer
A1725 PRIMARY Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA)
Related Parts
5305-00-010-0819INTERCHANGEABLE
SCREW,MACHINE
100819

Frequently Asked Questions

What is NSN 4820-00-056-6986?

NSN 4820-00-056-6986 is a Disk,valve, manufactured by Anderson Greenwood Lp Dba Anderson Greenwood Crosby, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-056-6986?

NSN 4820-00-056-6986 has 1 cross-referenced part number: A1725 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby).

What NSN replaces 4820-00-056-6986?

There is 1 known substitute for 4820-00-056-6986: 5305-00-010-0819. Verify interchangeability with system specifications before substitution.

What are the specifications of A1725?

Key specifications for A1725: Flange Seat to Disk End Height: 0.365 INCHES NOMINAL IN; Special Features: FIN TYPE DISK GUIDE; Overall Height: 1.463 INCHES NOMINAL IN; Material: COPPER ALLOY. 6 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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