PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21043Valve,plug

Barnstead Thermolyne Corporation Dba Barnstead International Div Laboratory Equipment · NSN 4820-01-280-0553 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-280-0553 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-280-0553. Primary manufacturer part number: 21043.
Features
  • Valve,plug — FSC 4820
  • 1 verified cross-reference
  • Primary manufacturer: Barnstead Thermolyne Corporation Dba Barnstead International Div Laboratory Equipment
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,plug, cataloged under National Stock Number 4820-01-280-0553, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Barnstead Thermolyne Corporation Dba Barnstead International Div Laboratory Equipment. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-280-0553
Primary Part Number21043
Item NameValve,plug
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerBarnstead Thermolyne Corporation Dba Barnstead International Div Laboratory Equipment
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5950-00-400-910221043 INTERCHANGEABLE
Transformer,pulse
Magnetika Inc
1660-00-677-996721043-1 INTERCHANGEABLE
Converter,liquid Oxygen
Ingersoll-Rand Company Dba Ingersoll-Rand
3439-00-870-9934 INTERCHANGEABLE
Electrode,cutting,solid
6625-01-012-579721043 INTERCHANGEABLE
Tuning Unit,generator
L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products
5841-01-101-099821043 INTERCHANGEABLE
Panel,bottom Rear
Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
4720-01-348-432721043 INTERCHANGEABLE
Hose Assembly,nonmetallic
Allied Systems Company Dba Allied Systems Co
5975-01-378-761621043 INTERCHANGEABLE
Strap,tie Down,electrical Compon
Waytek Inc
6240-01-582-835420906 INTERCHANGEABLE
Lamp,fluorescent
Osram Sylvania Inc
Cross-Reference Index
Part NumberManufacturer
21043 Barnstead Thermolyne Corporation Dba Barnstead International Div Laboratory Equipment (USA)
Related Parts
5950-00-400-9102INTERCHANGEABLE
TRANSFORMER,PULSE
21043
1660-00-677-9967INTERCHANGEABLE
CONVERTER,LIQUID OXYGEN
21043-1
3439-00-870-9934INTERCHANGEABLE
ELECTRODE,CUTTING,SOLID
6625-01-012-5797INTERCHANGEABLE
TUNING UNIT,GENERATOR
21043
5841-01-101-0998INTERCHANGEABLE
PANEL,BOTTOM REAR
21043
4720-01-348-4327INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
21043
5975-01-378-7616INTERCHANGEABLE
STRAP,TIE DOWN,ELECTRICAL COMPON
21043
6240-01-582-8354INTERCHANGEABLE
LAMP,FLUORESCENT
20906

Frequently Asked Questions

What is NSN 4820-01-280-0553?

NSN 4820-01-280-0553 is a Valve,plug, manufactured by Barnstead Thermolyne Corporation Dba Barnstead International Div Laboratory Equipment, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-280-0553?

NSN 4820-01-280-0553 has 1 cross-referenced part number: 21043 (Barnstead Thermolyne Corporation Dba Barnstead International Div Laboratory Equipment).

What NSN replaces 4820-01-280-0553?

There are 8 known substitutes for 4820-01-280-0553: 5950-00-400-9102, 1660-00-677-9967, 3439-00-870-9934 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21043?

Key specifications for 21043: Special Features: ALSO USED ON DISTILLING APPARATUS,NSN 6640-01-119-1626. 1 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com