PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

644-401Plug,rotary,valve

Steward Machine Co Inc · NSN 4820-01-290-7361 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-290-7361 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-290-7361. Primary manufacturer part number: 644-401.
Features
  • Plug,rotary,valve — FSC 4820
  • Material: STEEL
  • 4 verified cross-references
  • Primary manufacturer: Steward Machine Co Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel construction
General Description

The Plug,rotary,valve, cataloged under National Stock Number 4820-01-290-7361, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Steward Machine Co Inc. 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-290-7361
Primary Part Number644-401
Item NamePlug,rotary,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerSteward Machine Co Inc
StatusACTIVE
MaterialSTEEL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6625-00-405-408660902 INTERCHANGEABLE
Ammeter
Dresser, Llc
5330-00-526-897450374S INTERCHANGEABLE
Seal,plain Encased
Federal-Mogul Corp Government Sales Dept
4440-00-910-1658 INTERCHANGEABLE
Parts Kit,dehydrator
6625-01-072-4430 INTERCHANGEABLE
Test Set,power Supply
4720-01-165-8385331748 INTERCHANGEABLE
Hose,preformed
General Motors Llc Dba General Motors Llc
5945-01-201-9436 INTERCHANGEABLE
Relay,electromagnetic
2825-01-290-7332907-407 INTERCHANGEABLE
Block,turbine
Steward Machine Co Inc
2825-01-290-7333899-580 INTERCHANGEABLE
Lever,plug
Steward Machine Co Inc
4820-01-290-7348 INTERCHANGEABLE
Stem,fluid Valve
3010-01-291-4624 INTERCHANGEABLE
Coupling,shaft,rigid
Cross-Reference Index
Part NumberManufacturer
644-401 PRIMARY Steward Machine Co Inc (USA)
644-401 Hardie-Tynes Co., Inc. (USA)
60-902 PIECE 401 Hardie-Tynes Co., Inc. (USA)
60-902 Hardie-Tynes Co., Inc. (USA)
Related Parts
6625-00-405-4086INTERCHANGEABLE
AMMETER
60902
5330-00-526-8974INTERCHANGEABLE
SEAL,PLAIN ENCASED
50374S
4440-00-910-1658INTERCHANGEABLE
PARTS KIT,DEHYDRATOR
6625-01-072-4430INTERCHANGEABLE
TEST SET,POWER SUPPLY
4720-01-165-8385INTERCHANGEABLE
HOSE,PREFORMED
331748
5945-01-201-9436INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
2825-01-290-7332INTERCHANGEABLE
BLOCK,TURBINE
907-407
2825-01-290-7333INTERCHANGEABLE
LEVER,PLUG
899-580
4820-01-290-7348INTERCHANGEABLE
STEM,FLUID VALVE
3010-01-291-4624INTERCHANGEABLE
COUPLING,SHAFT,RIGID
3040-01-291-5271INTERCHANGEABLE
SHAFT,SHOULDERED
644-409
3020-01-291-5274INTERCHANGEABLE
GEAR SET,WORM AND WORM WHEEL,MAT

Frequently Asked Questions

What is NSN 4820-01-290-7361?

NSN 4820-01-290-7361 is a Plug,rotary,valve, manufactured by Steward Machine Co Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-290-7361?

NSN 4820-01-290-7361 has 4 cross-referenced part numbers: 644-401 (Steward Machine Co Inc), 644-401 (Hardie-Tynes Co., Inc.), 60-902 PIECE 401 (Hardie-Tynes Co., Inc.), 60-902 (Hardie-Tynes Co., Inc.).

What NSN replaces 4820-01-290-7361?

There are 12 known substitutes for 4820-01-290-7361: 6625-00-405-4086, 5330-00-526-8974, 4440-00-910-1658 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 644-401?

Key specifications for 644-401: Material: STEEL. 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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