PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

W73Head,bearing

Circor Naval Solutions Llc Dba Warren Pumps · NSN 4320-00-707-5053 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-707-5053 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-707-5053. Primary manufacturer part number: W73.
Features
  • Head,bearing — FSC 4320
  • General Characteristics Item Description: GUN CAST METAL,6.500 IN. O/A DIA,1.531 IN. SMALLEST ID,4 HOLES EQUALLY SPACED @ON 5.438 IN. DIA BOLT CIRCLE OF FLANGE,0.328 IN. DRILL PIPE THD ON SIDE,1.375 IN. O/A H IN
  • 2 verified cross-references
  • Primary manufacturer: Circor Naval Solutions Llc Dba Warren Pumps
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
General Description

The Head,bearing, cataloged under National Stock Number 4320-00-707-5053, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Circor Naval Solutions Llc Dba Warren Pumps. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, 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
NSN4320-00-707-5053
Primary Part NumberW73
Item NameHead,bearing
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerCircor Naval Solutions Llc Dba Warren Pumps
StatusACTIVE
General Characteristics Item DescriptionGUN CAST METAL,6.500 IN. O/A DIA,1.531 IN. SMALLEST ID,4 HOLES EQUALLY SPACED @ON 5.438 IN. DIA BOLT CIRCLE OF FLANGE,0.328 IN. DRILL PIPE THD ON SIDE,1.375 IN. O/A H IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5120-00-264-3794W-155 INTERCHANGEABLE
Wrench,adjustable
Ngk Metals Corporation Dba N G K Berylco
5999-01-692-8530W73 INTERCHANGEABLE
Heater,thermal Release
Rockwell Automation, Inc. Dba Rockwell Automation
Cross-Reference Index
Part NumberManufacturer
W73 PRIMARY Circor Naval Solutions Llc Dba Warren Pumps (USA)
R827PC13 Circor Naval Solutions Llc Dba Warren Pumps (USA)
Related Parts
5120-00-264-3794INTERCHANGEABLE
WRENCH,ADJUSTABLE
W-155
5999-01-692-8530INTERCHANGEABLE
HEATER,THERMAL RELEASE
W73

Frequently Asked Questions

What is NSN 4320-00-707-5053?

NSN 4320-00-707-5053 is a Head,bearing, manufactured by Circor Naval Solutions Llc Dba Warren Pumps, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-00-707-5053?

NSN 4320-00-707-5053 has 2 cross-referenced part numbers: W73 (Circor Naval Solutions Llc Dba Warren Pumps), R827PC13 (Circor Naval Solutions Llc Dba Warren Pumps).

What NSN replaces 4320-00-707-5053?

There are 2 known substitutes for 4320-00-707-5053: 5120-00-264-3794, 5999-01-692-8530. Verify interchangeability with system specifications before substitution.

What are the specifications of W73?

Key specifications for W73: General Characteristics Item Description: GUN CAST METAL,6.500 IN. O/A DIA,1.531 IN. SMALLEST ID,4 HOLES EQUALLY SPACED @ON 5.438 IN. DIA BOLT CIRCLE OF FLANGE,0.328 IN. DRILL PIPE THD ON SIDE,1.375 IN. O/A H IN. 1 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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