PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

16639Throat,machining,pump

Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc. · NSN 4320-01-293-5144 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-01-293-5144 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-293-5144. Primary manufacturer part number: 16639.
Features
  • Throat,machining,pump — FSC 4320
  • General Characteristics Item Description: ALUMINUM,CAST; ANODIZED
  • 2 verified cross-references
  • Primary manufacturer: Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc.
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
General Description

The Throat,machining,pump, cataloged under National Stock Number 4320-01-293-5144, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc.. Government technical data includes 1 verified specification, 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-01-293-5144
Primary Part Number16639
Item NameThroat,machining,pump
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerMeggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc.
StatusACTIVE
General Characteristics Item DescriptionALUMINUM,CAST; ANODIZED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
2530-01-021-9928NW16639 INTERCHANGEABLE
Parts Kit,hydraulic Brake Master
Tld Wollard Llc
6515-01-584-279994100B INTERCHANGEABLE
Support,arch
Der-Tex Corporation Dba Frelonic
Cross-Reference Index
Part NumberManufacturer
16639 Howden Fluid Systems (USA)
16639 PRIMARY Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc. (USA)
Related Parts
2530-01-021-9928INTERCHANGEABLE
PARTS KIT,HYDRAULIC BRAKE MASTER
NW16639
6515-01-584-2799INTERCHANGEABLE
SUPPORT,ARCH
94100B

Frequently Asked Questions

What is NSN 4320-01-293-5144?

NSN 4320-01-293-5144 is a Throat,machining,pump, manufactured by Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc., classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-01-293-5144?

NSN 4320-01-293-5144 has 2 cross-referenced part numbers: 16639 (Howden Fluid Systems), 16639 (Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc.).

What NSN replaces 4320-01-293-5144?

There are 2 known substitutes for 4320-01-293-5144: 2530-01-021-9928, 6515-01-584-2799. Verify interchangeability with system specifications before substitution.

What are the specifications of 16639?

Key specifications for 16639: End Item Identification: PNEU DEVICES CENTRIFUGAL PUMP MODEL 2525-1; General Characteristics Item Description: ALUMINUM,CAST; ANODIZED. 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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