PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7451-2Ring,diffuser,centrifugal Pump

Coffin Turbo Pump Inc · NSN 4320-01-275-4245 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-01-275-4245 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-275-4245. Primary manufacturer part number: 7451-2.
Features
  • Ring,diffuser,centrifugal Pump — FSC 4320
  • General Characteristics Item Description: CRES; 2 LOCKING PINS PROVIDED
  • 4 verified cross-references
  • Primary manufacturer: Coffin Turbo Pump Inc
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
General Description

The Ring,diffuser,centrifugal Pump, cataloged under National Stock Number 4320-01-275-4245, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Coffin Turbo Pump 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
NSN4320-01-275-4245
Primary Part Number7451-2
Item NameRing,diffuser,centrifugal Pump
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerCoffin Turbo Pump Inc
StatusACTIVE
General Characteristics Item DescriptionCRES; 2 LOCKING PINS PROVIDED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4320-00-375-89139972 INTERCHANGEABLE
Head and Liner
Coffin Turbo Pump Inc
6615-00-850-2857 INTERCHANGEABLE
Gyroscope,rate
2915-00-876-0923475C-29NW INTERCHANGEABLE
Valve Assy,fuel
Auto-Valve, Inc
2910-01-275-06071520-376 INTERCHANGEABLE
Nozzle,turbine Pump
Coffin Turbo Pump Inc
4820-01-275-06174879 INTERCHANGEABLE
Piston,valve
Coffin Turbo Pump Inc
4320-01-275-06287137-2 INTERCHANGEABLE
Piston,pump
Coffin Turbo Pump Inc
4320-01-275-248119380-1 INTERCHANGEABLE
Sleeve,hub,impeller
Coffin Turbo Pump Inc
4320-01-275-24826690-9 INTERCHANGEABLE
Stator Assembly,pump,turbine
Coffin Turbo Pump Inc
4320-01-275-24837138-2 INTERCHANGEABLE
Guide,piston,pump
Coffin Turbo Pump Inc
5330-01-275-41986609 INTERCHANGEABLE
Ring,wiper
Coffin Turbo Pump Inc
Cross-Reference Index
Part NumberManufacturer
E8256 Coffin Turbo Pump Inc (USA)
7451-2 PRIMARY Coffin Turbo Pump Inc (USA)
E8256 ITEM 117 Coffin Turbo Pump Inc (USA)
7451-2 Fmc Corp Turbo Pump Operation (USA)
Related Parts
4320-00-375-8913INTERCHANGEABLE
HEAD AND LINER
9972
6615-00-850-2857INTERCHANGEABLE
GYROSCOPE,RATE
2915-00-876-0923INTERCHANGEABLE
VALVE ASSY,FUEL
475C-29NW
2910-01-275-0607INTERCHANGEABLE
NOZZLE,TURBINE PUMP
1520-376
4820-01-275-0617INTERCHANGEABLE
PISTON,VALVE
4879
4320-01-275-0628INTERCHANGEABLE
PISTON,PUMP
7137-2
4320-01-275-2481INTERCHANGEABLE
SLEEVE,HUB,IMPELLER
19380-1
4320-01-275-2482INTERCHANGEABLE
STATOR ASSEMBLY,PUMP,TURBINE
6690-9
4320-01-275-2483INTERCHANGEABLE
GUIDE,PISTON,PUMP
7138-2
5330-01-275-4198INTERCHANGEABLE
RING,WIPER
6609
4320-01-275-4246INTERCHANGEABLE
DIAPHRAGM,CENTRIFUGAL PUMP
7688-5
4820-01-275-4258INTERCHANGEABLE
STEM,FLUID VALVE
4863

Frequently Asked Questions

What is NSN 4320-01-275-4245?

NSN 4320-01-275-4245 is a Ring,diffuser,centrifugal Pump, manufactured by Coffin Turbo Pump Inc, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-01-275-4245?

NSN 4320-01-275-4245 has 4 cross-referenced part numbers: E8256 (Coffin Turbo Pump Inc), 7451-2 (Coffin Turbo Pump Inc), E8256 ITEM 117 (Coffin Turbo Pump Inc), 7451-2 (Fmc Corp Turbo Pump Operation).

What NSN replaces 4320-01-275-4245?

There are 12 known substitutes for 4320-01-275-4245: 4320-00-375-8913, 6615-00-850-2857, 2915-00-876-0923 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7451-2?

Key specifications for 7451-2: End Item Identification: 4320-00-007-2638 CENTRIFUGAL PUMP UNIT; General Characteristics Item Description: CRES; 2 LOCKING PINS PROVIDED. 2 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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