PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

365203L1Guide,valve Stem

Naval Inventory Control Point Mechanicsburg · NSN 4820-01-646-9024 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-646-9024 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-646-9024. Primary manufacturer part number: 365203L1.
Features
  • Guide,valve Stem — FSC 4820
  • 4 verified cross-references
  • Primary manufacturer: Naval Inventory Control Point Mechanicsburg
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Guide,valve Stem, cataloged under National Stock Number 4820-01-646-9024, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Naval Inventory Control Point Mechanicsburg. This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameGuide,valve Stem
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersNaval Inventory Control Point Mechanicsburg (CAGE 03950); Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand (CAGE 0BR59)
Technical Specifications
ParameterValue
NSN4820-01-646-9024
Primary Part Number365203L1
Item NameGuide,valve Stem
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerNaval Inventory Control Point Mechanicsburg
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
2590-00-478-8242600007 INTERCHANGEABLE
Cap,filler Opening
Velvac Inc
2825-01-146-3487 INTERCHANGEABLE
Guide Governor
Cross-Reference Index
Part NumberManufacturer
365203L1 Naval Inventory Control Point Mechanicsburg (USA)
5100493 ITEM NO 7L1 Naval Inventory Control Point Mechanicsburg (USA)
5100493 ITEM NO 7 Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand (USA)
365203 Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand (USA)
Related Parts
2590-00-478-8242INTERCHANGEABLE
CAP,FILLER OPENING
600007
2825-01-146-3487INTERCHANGEABLE
GUIDE GOVERNOR

Frequently Asked Questions

What is NSN 4820-01-646-9024?

NSN 4820-01-646-9024 is a Guide,valve Stem, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-646-9024?

NSN 4820-01-646-9024 has 4 cross-referenced part numbers: 365203L1 (Naval Inventory Control Point Mechanicsburg), 5100493 ITEM NO 7L1 (Naval Inventory Control Point Mechanicsburg), 5100493 ITEM NO 7 (Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand), 365203 (Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand).

What NSN replaces 4820-01-646-9024?

There are 2 known substitutes for 4820-01-646-9024: 2590-00-478-8242, 2825-01-146-3487. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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