PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

D16Sleeve,shaft,pump

Circor Naval Solutions Llc Dba Warren Pumps · NSN 4320-00-398-9340 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-398-9340 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-398-9340. Primary manufacturer part number: D16.
Features
  • Sleeve,shaft,pump — FSC 4320
  • Style Designator: SOLID, EXTERNAL FLANGE ONE END
  • Flange Width: 0.3437 INCHES NOMINAL IN
  • Flange Outside Diameter: 1.8750 INCHES NOMINAL IN
  • Body Inside Diameter: 0.8125 INCHES NOMINAL IN
  • Body Outside Diameter: 1.0000 INCHES NOMINAL IN
  • Corner Shape: SQUARE INSIDE LEFT CORNER
  • Corner Shape: SQUARE OUTSIDE LEFT CORNER
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
  • Applications requiring Copper Alloy Overall construction
General Description

The Sleeve,shaft,pump, cataloged under National Stock Number 4320-00-398-9340, 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 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-00-398-9340
Primary Part NumberD16
Item NameSleeve,shaft,pump
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerCircor Naval Solutions Llc Dba Warren Pumps
StatusACTIVE
Style DesignatorSOLID, EXTERNAL FLANGE ONE END
Flange Width0.3437 INCHES NOMINAL IN
Flange Outside Diameter1.8750 INCHES NOMINAL IN
Body Inside Diameter0.8125 INCHES NOMINAL IN
Body Outside Diameter1.0000 INCHES NOMINAL IN
Corner ShapeSQUARE INSIDE LEFT CORNER
Corner ShapeSQUARE OUTSIDE LEFT CORNER
Corner ShapeSQUARE INSIDE RIGHT CORNER
MaterialCOPPER ALLOY OVERALL
Keyway Dimension0.2500 INCHES NOMINAL INTERNAL KEYWAY WIDTH IN
Corner ShapeSQUARE LEFT FLANGE BODY CORNER
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
2920-00-540-83522689 INTERCHANGEABLE
Spark Plug
Champion Aerospace Llc
6665-00-542-1442D16 INTERCHANGEABLE
Indicator,combustible Gas,portab
Scott Instruments
7450-00-581-2235D1-6 INTERCHANGEABLE
Recorder,sound
Ricoh Americas Corporation
Cross-Reference Index
Part NumberManufacturer
BS1246PC9 Circor Naval Solutions Llc Dba Warren Pumps (USA)
BS1250PC33 Circor Naval Solutions Llc Dba Warren Pumps (USA)
BS5-1484PC9 Circor Naval Solutions Llc Dba Warren Pumps (USA)
BS4-1653PC9 Circor Naval Solutions Llc Dba Warren Pumps (USA)
BS4-1396PC9 Circor Naval Solutions Llc Dba Warren Pumps (USA)
BS1247PC9 Circor Naval Solutions Llc Dba Warren Pumps (USA)
BS1397PC9 Circor Naval Solutions Llc Dba Warren Pumps (USA)
BS4-1652PC9 Circor Naval Solutions Llc Dba Warren Pumps (USA)
BS4-1485PC9 Circor Naval Solutions Llc Dba Warren Pumps (USA)
BS1249PC33 Circor Naval Solutions Llc Dba Warren Pumps (USA)
D16 PRIMARY Circor Naval Solutions Llc Dba Warren Pumps (USA)
Related Parts
2920-00-540-8352INTERCHANGEABLE
SPARK PLUG
2689
6665-00-542-1442INTERCHANGEABLE
INDICATOR,COMBUSTIBLE GAS,PORTAB
D16
7450-00-581-2235INTERCHANGEABLE
RECORDER,SOUND
D1-6

Frequently Asked Questions

What is NSN 4320-00-398-9340?

NSN 4320-00-398-9340 is a Sleeve,shaft,pump, 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 4320-00-398-9340?

NSN 4320-00-398-9340 has 11 cross-referenced part numbers: BS1246PC9 (Circor Naval Solutions Llc Dba Warren Pumps), BS1250PC33 (Circor Naval Solutions Llc Dba Warren Pumps), BS5-1484PC9 (Circor Naval Solutions Llc Dba Warren Pumps), BS4-1653PC9 (Circor Naval Solutions Llc Dba Warren Pumps), BS4-1396PC9 (Circor Naval Solutions Llc Dba Warren Pumps) and 6 more.

What NSN replaces 4320-00-398-9340?

There are 3 known substitutes for 4320-00-398-9340: 2920-00-540-8352, 6665-00-542-1442, 7450-00-581-2235. Verify interchangeability with system specifications before substitution.

What are the specifications of D16?

Key specifications for D16: Style Designator: SOLID, EXTERNAL FLANGE ONE END; Flange Width: 0.3437 INCHES NOMINAL IN; Flange Outside Diameter: 1.8750 INCHES NOMINAL IN; Overall Length: 3.2500 INCHES NOMINAL IN. 12 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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