PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

521010Stem,fluid Valve

Badger Meter Inc · NSN 4820-01-368-0103 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-368-0103 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-368-0103. Primary manufacturer part number: 521010.
Features
  • Stem,fluid Valve — FSC 4820
  • Valve Size for Which Designed: 0.250 INCHES IN
  • Material: STEEL COMP 316
  • Valve Type for Which Designed: RELIEF
  • Stem Actuating End Type: THREADED EXTERNALLY
  • 1 verified cross-reference
  • Primary manufacturer: Badger Meter Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Comp 316 construction
General Description

The Stem,fluid Valve, cataloged under National Stock Number 4820-01-368-0103, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Badger Meter Inc. 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-368-0103
Primary Part Number521010
Item NameStem,fluid Valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerBadger Meter Inc
StatusACTIVE
Valve Size for Which Designed0.250 INCHES IN
MaterialSTEEL COMP 316
Valve Type for Which DesignedRELIEF
Stem Actuating End TypeTHREADED EXTERNALLY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
6680-01-340-881552 1010 INTERCHANGEABLE
Indicator,sight,liquid
Jered Llc
5970-01-393-2357100H143PC18 INTERCHANGEABLE
Insulator,plate
Northrop Grumman Systems Corporation Div Marine Systems
Cross-Reference Index
Part NumberManufacturer
521010 PRIMARY Badger Meter Inc (USA)
Related Parts
6680-01-340-8815INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
52 1010
5970-01-393-2357INTERCHANGEABLE
INSULATOR,PLATE
100H143PC18

Frequently Asked Questions

What is NSN 4820-01-368-0103?

NSN 4820-01-368-0103 is a Stem,fluid Valve, manufactured by Badger Meter Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-368-0103?

NSN 4820-01-368-0103 has 1 cross-referenced part number: 521010 (Badger Meter Inc).

What NSN replaces 4820-01-368-0103?

There are 2 known substitutes for 4820-01-368-0103: 6680-01-340-8815, 5970-01-393-2357. Verify interchangeability with system specifications before substitution.

What are the specifications of 521010?

Key specifications for 521010: Valve Size for Which Designed: 0.250 INCHES IN; Material: STEEL COMP 316; Valve Type for Which Designed: RELIEF; Stem Actuating End Type: THREADED EXTERNALLY. 4 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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