PartsTable TECHNICAL DATA SHEET

NSN 4320-01-188-1909Government record, cited

Spool, Piston Rod4320-01-188-1909

NSN 4320-01-188-1909 · NIIN 011881909 · Part number 727743-02

Curtiss-Wright Electro-Mechanical Corporation Div Epd · FSC 4320 — Power and Hand Pumps · FSG 43 — Pumps and Compressors · CAGE 0UBG9

Government record, cited

NSN 4320-01-188-1909 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-188-1909. Manufacturer of record part number: 727743-02.

Also searched as 4320-01-188-1909 · 4320011881909 · NIIN 011881909 · 01-188-1909 · FSC 4320 Power and Hand Pumps · CAGE 0UBG9 · 727743-02 · DX-125647 · DY-127729 ITEM 21 · DY-127729 · 727743

Nearby stock numbers ← 4320-01-188-1908 Lever, Piston · 4320-01-188-1910 Indicator, Stroke →

Features

Spool,piston Rod — FSC 4320
2 manufacturer part numbers on file
Manufacturer of record: Curtiss-Wright Electro-Mechanical Corporation Div Epd

Identification

NSN: 4320-01-188-1909
NIIN: 011881909
FSC: 4320 — Power and Hand Pumps
FSG: 43 — Pumps and Compressors
Primary part number: 727743-02
Manufacturer: Curtiss-Wright Electro-Mechanical Corporation Div Epd

General Description

The Spool,piston Rod, cataloged under National Stock Number 4320-01-188-1909, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Div Epd. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Catalog Facts

Item Name	Spool,piston Rod
FSC / FSG	4320 — Power and Hand Pumps (FSG 43)
Manufacturers	Curtiss-Wright Electro-Mechanical Corporation Div Epd (CAGE 0UBG9)

Technical Specifications

Parameter	Value
NSN	4320-01-188-1909
Primary Part Number	727743-02
Item Name	Spool,piston Rod
FSC / FSG	4320 / 43 — Power and Hand Pumps
Manufacturer	Curtiss-Wright Electro-Mechanical Corporation Div Epd
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

⇄ Related Items 6

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

4320-01-188-1910727746-00 POSSIBLE MATCH

INDICATOR,STROKE

Possible match (shared part number)Curtiss-Wright Electro-Mechanical Corporation Div Epd

4730-01-188-1911385251-00 POSSIBLE MATCH

FLANGE,PIPE,BLIND

Possible match (shared part number)Curtiss-Wright Electro-Mechanical Corporation Div Epd

4320-01-188-1913725643 POSSIBLE MATCH

BODY,LIQUID PISTON,PUMP

Possible match (shared part number)Curtiss-Wright Electro-Mechanical Corporation Div Epd

4320-01-188-1914725643-01 POSSIBLE MATCH

FOLLOWER,LIQUID PISTON,PUMP

Possible match (shared part number)Curtiss-Wright Electro-Mechanical Corporation Div Epd

4320-01-188-1915727734 POSSIBLE MATCH

STUFFING BOX,LIQUID PISTON ROD

Possible match (shared part number)Curtiss-Wright Electro-Mechanical Corporation Div Epd

4320-01-188-1918727747 POSSIBLE MATCH

HEAD,STEAM CHEST,PUMP

Possible match (shared part number)Curtiss-Wright Electro-Mechanical Corporation Div Epd

Cross-Reference Index

Part Number	Manufacturer
727743-02 PRIMARY	Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
DY-127729 ITEM 21	Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)

Reference documents

Reference	Meaning
DX-125647	D/9 Drawing number reference only U.S. Government activity
DY-127729 ITEM 21	5/9 Secondary reference U.S. Government activity
DY-127729	D/9 Drawing number reference only U.S. Government activity
727743	5/9 Secondary reference U.S. Government activity
727743-02	3/9 Design control — primary reference U.S. Government activity

Related Parts

4320-01-188-1910POSSIBLE MATCH

INDICATOR,STROKE

727746-00

4730-01-188-1911POSSIBLE MATCH

FLANGE,PIPE,BLIND

385251-00

4320-01-188-1913POSSIBLE MATCH

BODY,LIQUID PISTON,PUMP

725643

4320-01-188-1914POSSIBLE MATCH

FOLLOWER,LIQUID PISTON,PUMP

725643-01

4320-01-188-1915POSSIBLE MATCH

STUFFING BOX,LIQUID PISTON ROD

727734

4320-01-188-1918POSSIBLE MATCH

HEAD,STEAM CHEST,PUMP

727747

Frequently Asked Questions

What is NSN 4320-01-188-1909?

NSN 4320-01-188-1909 is a Spool,piston Rod, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 4320, Power and Hand Pumps. Status: active.

What part numbers are listed for NSN 4320-01-188-1909?

NSN 4320-01-188-1909 has 2 manufacturer part numbers on file: 727743-02 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), DY-127729 ITEM 21 (Curtiss-Wright Electro-Mechanical Corporation Div Epd).

What NSN replaces 4320-01-188-1909?

6 possible matches (shared part number, not a government interchangeability claim): 4320-01-188-1910, 4730-01-188-1911, 4320-01-188-1913. Verify interchangeability with system specifications before substitution.

Is NSN 4320-01-188-1909 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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