PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1T01Pump,centrifugal

Flowserve · NSN 4320-01-381-8131 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-01-381-8131 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-381-8131. Primary manufacturer part number: 1T01.
Features
  • Pump,centrifugal — FSC 4320
  • Centrifugal Pump Impeller Quantity: 1
  • Centrifugal Pump Design: RADIAL FLOW
  • Drive Shaft Type: KEY TYPE, EXTERNAL
  • Centrifugal Pump Impeller Suction Type: DOUBLE
  • Media for Which Designed: WATER, FRESH
  • Discharge Connection Quantity: 1
  • Drive Connection Type: CLOSE COUPLED
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
General Description

The Pump,centrifugal, cataloged under National Stock Number 4320-01-381-8131, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Flowserve. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-01-381-8131
Primary Part Number1T01
Item NamePump,centrifugal
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerFlowserve
StatusACTIVE
Centrifugal Pump Impeller Quantity1
Centrifugal Pump DesignRADIAL FLOW
Drive Shaft TypeKEY TYPE, EXTERNAL
Centrifugal Pump Impeller Suction TypeDOUBLE
Media for Which DesignedWATER, FRESH
Discharge Connection Quantity1
Drive Connection TypeCLOSE COUPLED
Stage Quantity1
Pumping Element Operating PositionHORIZONTAL
Discharge Connection TypeTHREADED EXTERNAL
Intake Connection Quantity1
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
3110-01-013-9705T-101-1 INTERCHANGEABLE
Bearing,ball,thrust
Auburn Bearing and Manufacturing Inc Div Auburn Bearing & Manufacturing
Cross-Reference Index
Part NumberManufacturer
1T01 Flowserve (GBR)
1T01 Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
1T01 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
Related Parts
3110-01-013-9705INTERCHANGEABLE
BEARING,BALL,THRUST
T-101-1

Frequently Asked Questions

What is NSN 4320-01-381-8131?

NSN 4320-01-381-8131 is a Pump,centrifugal, manufactured by Flowserve, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-01-381-8131?

NSN 4320-01-381-8131 has 3 cross-referenced part numbers: 1T01 (Flowserve), 1T01 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), 1T01 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging).

What NSN replaces 4320-01-381-8131?

There is 1 known substitute for 4320-01-381-8131: 3110-01-013-9705. Verify interchangeability with system specifications before substitution.

What are the specifications of 1T01?

Key specifications for 1T01: Centrifugal Pump Impeller Quantity: 1; Centrifugal Pump Design: RADIAL FLOW; Drive Shaft Type: KEY TYPE, EXTERNAL; Centrifugal Pump Impeller Suction Type: DOUBLE. 12 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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