PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

H12857Gear Rotor Set,rotary Pump

Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc · NSN 4320-01-194-2966 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-01-194-2966 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-194-2966. Primary manufacturer part number: H12857.
Features
  • Gear Rotor Set,rotary Pump — FSC 4320
  • 4 verified cross-references
  • Primary manufacturer: Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
  • Power transmission and speed reduction
  • Rotary motion transfer
General Description

The Gear Rotor Set,rotary Pump, cataloged under National Stock Number 4320-01-194-2966, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc. This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameGear Rotor Set,rotary Pump
FSC / FSG4320 — No Item Name Available (FSG 43)
ManufacturersMeggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc. (CAGE 58163); Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc (CAGE 62228); Howden Fluid Systems (CAGE 33654)
Technical Specifications
ParameterValue
NSN4320-01-194-2966
Primary Part NumberH12857
Item NameGear Rotor Set,rotary Pump
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerMeggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
2810-00-118-836312857 INTERCHANGEABLE
Plug
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
4730-00-200-0257SAE J530 6-4 130139B INTERCHANGEABLE
Reducer,pipe
Sae International Dba Sae International
5110-00-203-4730 INTERCHANGEABLE
File,hand
5360-00-446-337512857 INTERCHANGEABLE
Spring,helical,compression
Leslie Controls, Inc. Dba Leslie Controls Inc
6140-01-073-490716624 INTERCHANGEABLE
Battery,storage
Saft America Inc. Dba Tadiran Batteries Div Aviation Division
4730-01-224-5453 INTERCHANGEABLE
Seal Spacer
Cross-Reference Index
Part NumberManufacturer
H12857 Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc. (USA)
H12857 PRIMARY Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc (USA)
12857 Howden Fluid Systems (USA)
12857 Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc. (USA)
Related Parts
2810-00-118-8363INTERCHANGEABLE
PLUG
12857
4730-00-200-0257INTERCHANGEABLE
REDUCER,PIPE
SAE J530 6-4 130139B
5110-00-203-4730INTERCHANGEABLE
FILE,HAND
5360-00-446-3375INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
12857
6140-01-073-4907INTERCHANGEABLE
BATTERY,STORAGE
16624
4730-01-224-5453INTERCHANGEABLE
SEAL SPACER

Frequently Asked Questions

What is NSN 4320-01-194-2966?

NSN 4320-01-194-2966 is a Gear Rotor Set,rotary Pump, manufactured by Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-01-194-2966?

NSN 4320-01-194-2966 has 4 cross-referenced part numbers: H12857 (Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc.), H12857 (Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc), 12857 (Howden Fluid Systems), 12857 (Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc.).

What NSN replaces 4320-01-194-2966?

There are 6 known substitutes for 4320-01-194-2966: 2810-00-118-8363, 4730-00-200-0257, 5110-00-203-4730 and 3 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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