Piston, Pump4320-01-033-9827

NSN 4320-01-033-9827 · NIIN 010339827

FSC 4320 — Power and Hand Pumps · FSG 43 — Pumps and Compressors

Government record, cited

Also searched as 4320-01-033-9827 · 4320010339827 · NIIN 010339827 · 01-033-9827 · FSC 4320 Power and Hand Pumps

Nearby stock numbers ← 4320-01-033-9743 · 4320-01-033-9974 Solenoid Subassy →

Features

Piston,pump — FSC 4320
Ring Groove Width: 0.100 INCHES NOMINAL IN
Integral Connecting Rod: NOT INCLUDED
Retaining Ring Groove: NOT INCLUDED
Surface Finish: SEMIFINISHED
Ring Groove Position and Quantity: NO. 1 AND NO 2 POSITIONS PISTON
Diameter: 0.493 INCHES NOMINAL IN
Ring Groove Diameter: 0.393 INCHES NOMINAL IN

Identification

NSN: 4320-01-033-9827
NIIN: 010339827
FSC: 4320 — Power and Hand Pumps
FSG: 43 — Pumps and Compressors

General Description

The Piston,pump, cataloged under National Stock Number 4320-01-033-9827, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4320-01-033-9827
Item Name	Piston,pump
FSC / FSG	4320 / 43 — Power and Hand Pumps
Status	ACTIVE
Ring Groove Width	0.100 INCHES NOMINAL IN
Integral Connecting Rod	NOT INCLUDED
Retaining Ring Groove	NOT INCLUDED
Surface Finish	SEMIFINISHED
Ring Groove Position and Quantity	NO. 1 AND NO 2 POSITIONS PISTON
Diameter	0.493 INCHES NOMINAL IN
Ring Groove Diameter	0.393 INCHES NOMINAL IN
Pin	NOT INCLUDED
Oil Groove	NOT INCLUDED
Ring Groove Quantity	2
Skirt Bottom Cutaway Feature	NOT INCLUDED
Ring	NOT INCLUDED
Material	ALUMINUM ALLOY
Skirt Type	SOLID
Groove Taper Angle	5 DEGREES

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

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
714996	3/2 Design control — primary reference U.S. Government activity

No interchangeability data on file.

Other items in FSC 4320 — Power and Hand Pumps

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

4320-00-001-1633

4320-00-001-1633 · Item name not on file

4320-00-001-2628

RETAINER AND PIN

4320-00-001-2629

HOUSING AND PIN

4320-00-001-2630

PUMP,CENTRIFUGAL

4320-00-001-2631

4320-00-001-2631 · Item name not on file

4320-00-001-2632

4320-00-001-2632 · Item name not on file

4320-00-001-3377

4320-00-001-3377 · Item name not on file

4320-00-001-3384

4320-00-001-3384 · Item name not on file

Frequently Asked Questions

What is NSN 4320-01-033-9827?

NSN 4320-01-033-9827 is a Piston,pump, classified under FSC 4320, Power and Hand Pumps. Status: active.

What are the specifications of 4320-01-033-9827?

Key specifications for 4320-01-033-9827: Overall Height: 0.655 INCHES NOMINAL IN; Ring Groove Width: 0.100 INCHES NOMINAL IN; Integral Connecting Rod: NOT INCLUDED; Retaining Ring Groove: NOT INCLUDED. 15 specifications are documented in the U.S. Government catalog.

Is NSN 4320-01-033-9827 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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