PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

50-SPump Unit,rotary

Greylor Dynesco Co Inc · NSN 4320-01-679-4948 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-01-679-4948 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-679-4948. Primary manufacturer part number: 50-S.
Features
  • Pump Unit,rotary — FSC 4320
  • Media for Which Designed: LIQUID
  • Mounting Type: BRACKET
  • Maximum Discharge Flow Rate: 650.0 LITERS PER MINUTE
  • Operating Speed at Rated Capacity: 1700.0 REVOLUTIONS PER MINUTE
  • 2 verified cross-references
  • Primary manufacturer: Greylor Dynesco Co Inc
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
General Description

The Pump Unit,rotary, cataloged under National Stock Number 4320-01-679-4948, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Greylor Dynesco Co Inc. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, 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
NSN4320-01-679-4948
Primary Part Number50-S
Item NamePump Unit,rotary
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerGreylor Dynesco Co Inc
StatusACTIVE
Media for Which DesignedLIQUID
Mounting TypeBRACKET
Maximum Discharge Flow Rate650.0 LITERS PER MINUTE
Operating Speed at Rated Capacity1700.0 REVOLUTIONS PER MINUTE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4320-01-256-9874 INTERCHANGEABLE
Pump,centrifugal
6685-01-292-7873 INTERCHANGEABLE
Thermometer,self-Indicating,digi
4320-01-694-2982 INTERCHANGEABLE
Pump Unit,rotary
Cross-Reference Index
Part NumberManufacturer
50-S PRIMARY Greylor Dynesco Co Inc (USA)
D-1477 Cole-Parmer Instrument Co Dba Barnant Co (USA)
Related Parts
4320-01-256-9874INTERCHANGEABLE
PUMP,CENTRIFUGAL
6685-01-292-7873INTERCHANGEABLE
THERMOMETER,SELF-INDICATING,DIGI
4320-01-694-2982INTERCHANGEABLE
PUMP UNIT,ROTARY

Frequently Asked Questions

What is NSN 4320-01-679-4948?

NSN 4320-01-679-4948 is a Pump Unit,rotary, manufactured by Greylor Dynesco Co Inc, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-01-679-4948?

NSN 4320-01-679-4948 has 2 cross-referenced part numbers: 50-S (Greylor Dynesco Co Inc), D-1477 (Cole-Parmer Instrument Co Dba Barnant Co).

What NSN replaces 4320-01-679-4948?

There are 3 known substitutes for 4320-01-679-4948: 4320-01-256-9874, 6685-01-292-7873, 4320-01-694-2982. Verify interchangeability with system specifications before substitution.

What are the specifications of 50-S?

Key specifications for 50-S: Media for Which Designed: LIQUID; Mounting Type: BRACKET; Part Name Assigned by Controlling Agency: PUMP; Maximum Discharge Flow Rate: 650.0 LITERS PER MINUTE. 5 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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