PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7786-1Impeller,pump,centrifugal

Coffin Turbo Pump Inc · NSN 4320-01-275-4302 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-01-275-4302 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-275-4302. Primary manufacturer part number: 7786-1.
Features
  • Impeller,pump,centrifugal — FSC 4320
  • Material: STEEL CORROSION RESISTING
  • Rotation Direction for Which Designed: COUNTERCLOCKWISE
  • Overall Diameter: 9.750 INCHES NOMINAL IN
  • Blade Quantity: 6
  • Design Type: SINGLE WIDTH
  • 4 verified cross-references
  • Primary manufacturer: Coffin Turbo Pump Inc
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
  • Applications requiring Steel Corrosion Resisting construction
General Description

The Impeller,pump,centrifugal, cataloged under National Stock Number 4320-01-275-4302, 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 5 verified specifications, 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
NSN4320-01-275-4302
Primary Part Number7786-1
Item NameImpeller,pump,centrifugal
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerCoffin Turbo Pump Inc
StatusACTIVE
MaterialSTEEL CORROSION RESISTING
Rotation Direction for Which DesignedCOUNTERCLOCKWISE
Overall Diameter9.750 INCHES NOMINAL IN
Blade Quantity6
Design TypeSINGLE WIDTH
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4320-00-375-89139972 INTERCHANGEABLE
Head and Liner
Coffin Turbo Pump 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
4320-01-275-42457451-2 INTERCHANGEABLE
Ring,diffuser,centrifugal Pump
Coffin Turbo Pump Inc
4320-01-275-42467688-5 INTERCHANGEABLE
Diaphragm,centrifugal Pump
Coffin Turbo Pump Inc
Cross-Reference Index
Part NumberManufacturer
7786-1 PRIMARY Coffin Turbo Pump Inc (USA)
E8256 ITEM 107 Coffin Turbo Pump Inc (USA)
E8256 Coffin Turbo Pump Inc (USA)
7786-1 Fmc Corp Turbo Pump Operation (USA)
Related Parts
4320-00-375-8913INTERCHANGEABLE
HEAD AND LINER
9972
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
4320-01-275-4245INTERCHANGEABLE
RING,DIFFUSER,CENTRIFUGAL PUMP
7451-2
4320-01-275-4246INTERCHANGEABLE
DIAPHRAGM,CENTRIFUGAL PUMP
7688-5
4820-01-275-4258INTERCHANGEABLE
STEM,FLUID VALVE
4863
4820-01-275-4259INTERCHANGEABLE
STEM,FLUID VALVE
7417

Frequently Asked Questions

What is NSN 4320-01-275-4302?

NSN 4320-01-275-4302 is a Impeller,pump,centrifugal, manufactured by Coffin Turbo Pump Inc, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-01-275-4302?

NSN 4320-01-275-4302 has 4 cross-referenced part numbers: 7786-1 (Coffin Turbo Pump Inc), E8256 ITEM 107 (Coffin Turbo Pump Inc), E8256 (Coffin Turbo Pump Inc), 7786-1 (Fmc Corp Turbo Pump Operation).

What NSN replaces 4320-01-275-4302?

There are 12 known substitutes for 4320-01-275-4302: 4320-00-375-8913, 2910-01-275-0607, 4820-01-275-0617 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7786-1?

Key specifications for 7786-1: Material: STEEL CORROSION RESISTING; Rotation Direction for Which Designed: COUNTERCLOCKWISE; Overall Width: 4.750 INCHES NOMINAL IN; Special Features: CRES SLEEVE PROVIDED. 8 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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