PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2620-922X4ASSYGS3INPIECE44Stem,fluid Valve

Electric Boat Corporation Div General Dynamics Electric Boat · NSN 4820-01-133-7755 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-133-7755 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-133-7755. Primary manufacturer part number: 2620-922X4ASSYGS3INPIECE44.
Features
  • Stem,fluid Valve — FSC 4820
  • Material: STEEL CORROSION RESISTING
  • 4 verified cross-references
  • Primary manufacturer: Electric Boat Corporation Div General Dynamics Electric Boat
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting construction
General Description

The Stem,fluid Valve, cataloged under National Stock Number 4820-01-133-7755, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Electric Boat Corporation Div General Dynamics Electric Boat. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-133-7755
Primary Part Number2620-922X4ASSYGS3INPIECE44
Item NameStem,fluid Valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerElectric Boat Corporation Div General Dynamics Electric Boat
StatusACTIVE
MaterialSTEEL CORROSION RESISTING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
4820-01-110-1270SS845-1889557ASSYGSC3INPIECE74 INTERCHANGEABLE
Stem,fluid Valve
Naval Ship Systems Command
4820-01-118-2843SS845-1889557ASSYAS3IN PIECE 69 INTERCHANGEABLE
Disk,valve
Naval Ship Systems Command
4820-01-123-41322620-922X1 PC 5/3 INCH INTERCHANGEABLE
Disk,valve
Electric Boat Corporation Div General Dynamics Electric Boat
5330-01-228-95480633002 INTERCHANGEABLE
Retainer,packing
The Walworth Company
Cross-Reference Index
Part NumberManufacturer
SS845-1889557 Naval Ship Systems Command (USA)
2620-922X4 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
2620-922X4ASSYGS3INPIECE44 PRIMARY Electric Boat Corporation Div General Dynamics Electric Boat (USA)
SS845-1889557ASSYGS3INPIECE44 PRIMARY Naval Ship Systems Command (USA)
Related Parts
4820-01-110-1270INTERCHANGEABLE
STEM,FLUID VALVE
SS845-1889557ASSYGSC3INPIECE74
4820-01-118-2843INTERCHANGEABLE
DISK,VALVE
SS845-1889557ASSYAS3IN PIECE 69
4820-01-123-4132INTERCHANGEABLE
DISK,VALVE
2620-922X1 PC 5/3 INCH
5330-01-228-9548INTERCHANGEABLE
RETAINER,PACKING
0633002

Frequently Asked Questions

What is NSN 4820-01-133-7755?

NSN 4820-01-133-7755 is a Stem,fluid Valve, manufactured by Electric Boat Corporation Div General Dynamics Electric Boat, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-133-7755?

NSN 4820-01-133-7755 has 4 cross-referenced part numbers: SS845-1889557 (Naval Ship Systems Command), 2620-922X4 (Electric Boat Corporation Div General Dynamics Electric Boat), 2620-922X4ASSYGS3INPIECE44 (Electric Boat Corporation Div General Dynamics Electric Boat), SS845-1889557ASSYGS3INPIECE44 (Naval Ship Systems Command).

What NSN replaces 4820-01-133-7755?

There are 4 known substitutes for 4820-01-133-7755: 4820-01-110-1270, 4820-01-118-2843, 4820-01-123-4132 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2620-922X4ASSYGS3INPIECE44?

Key specifications for 2620-922X4ASSYGS3INPIECE44: Material: STEEL CORROSION RESISTING. 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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