PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

204901Sleeve Stem,valve

Aerosonic Llc · NSN 4820-01-341-6151 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-341-6151 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-341-6151. Primary manufacturer part number: 204901.
Features
  • Sleeve Stem,valve — FSC 4820
  • General Characteristics Item Description: STAINLESS STEEL 303 O/A;0.310 IN.LG,1 END 0.220 IN.OD,OTHER END 0.190 IN.DIA;BORE 0.126 IN.DIA;1 CROSS DRILLED HOLE,0.045 IN.DIA THRU IN
  • 1 verified cross-reference
  • Primary manufacturer: Aerosonic Llc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Sleeve Stem,valve, cataloged under National Stock Number 4820-01-341-6151, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Aerosonic Llc. Government technical data includes 1 verified specification, 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-341-6151
Primary Part Number204901
Item NameSleeve Stem,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerAerosonic Llc
StatusACTIVE
General Characteristics Item DescriptionSTAINLESS STEEL 303 O/A;0.310 IN.LG,1 END 0.220 IN.OD,OTHER END 0.190 IN.DIA;BORE 0.126 IN.DIA;1 CROSS DRILLED HOLE,0.045 IN.DIA THRU IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4820-01-411-2150204901 INTERCHANGEABLE
Valve,check
Admiral Filter Company Llc
5905-01-523-8998204901 INTERCHANGEABLE
Resistor,thermal
Setra Systems, Inc. Dba Gems Sensors
4730-01-679-487803138427 INTERCHANGEABLE
Clamp,hose
Grove U.s. Llc Dba Grove Us Llc
Cross-Reference Index
Part NumberManufacturer
204901 PRIMARY Aerosonic Llc (USA)
Related Parts
4820-01-411-2150INTERCHANGEABLE
VALVE,CHECK
204901
5905-01-523-8998INTERCHANGEABLE
RESISTOR,THERMAL
204901
4730-01-679-4878INTERCHANGEABLE
CLAMP,HOSE
03138427

Frequently Asked Questions

What is NSN 4820-01-341-6151?

NSN 4820-01-341-6151 is a Sleeve Stem,valve, manufactured by Aerosonic Llc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-341-6151?

NSN 4820-01-341-6151 has 1 cross-referenced part number: 204901 (Aerosonic Llc).

What NSN replaces 4820-01-341-6151?

There are 3 known substitutes for 4820-01-341-6151: 4820-01-411-2150, 5905-01-523-8998, 4730-01-679-4878. Verify interchangeability with system specifications before substitution.

What are the specifications of 204901?

Key specifications for 204901: General Characteristics Item Description: STAINLESS STEEL 303 O/A;0.310 IN.LG,1 END 0.220 IN.OD,OTHER END 0.190 IN.DIA;BORE 0.126 IN.DIA;1 CROSS DRILLED HOLE,0.045 IN.DIA THRU IN. 1 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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