Piston, Pump4320-01-526-0445

NSN 4320-01-526-0445 · NIIN 015260445 · Part number 159-9453

Caterpillar Inc Div Caterpillar Defense · FSC 4320 — Power and Hand Pumps · FSG 43 — Pumps and Compressors · CAGE 11083

Government record, cited

NSN 4320-01-526-0445 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-526-0445. Manufacturer of record part number: 159-9453.

Also searched as 4320-01-526-0445 · 4320015260445 · NIIN 015260445 · 01-526-0445 · FSC 4320 Power and Hand Pumps · CAGE 11083 · 159-9453

Nearby stock numbers ← 4320-01-526-0433 Pump, Centrifugal · 4320-01-526-0729 Head, Hydraulic Motor-Pump →

Features

Piston,pump — FSC 4320
1 manufacturer part number on file
Manufacturer of record: Caterpillar Inc Div Caterpillar Defense

Identification

NSN: 4320-01-526-0445
NIIN: 015260445
FSC: 4320 — Power and Hand Pumps
FSG: 43 — Pumps and Compressors
Primary part number: 159-9453
Manufacturer: Caterpillar Inc Div Caterpillar Defense

General Description

The Piston,pump, cataloged under National Stock Number 4320-01-526-0445, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4320-01-526-0445
Primary Part Number	159-9453
Item Name	Piston,pump
FSC / FSG	4320 / 43 — Power and Hand Pumps
Manufacturer	Caterpillar Inc Div Caterpillar Defense
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

Cross-Reference Index

Part Number	Manufacturer
159-9453 PRIMARY	Caterpillar Inc Div Caterpillar Defense (USA)

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 4320-01-526-0445?

NSN 4320-01-526-0445 is a Piston,pump, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 4320, Power and Hand Pumps. Status: active.

What part numbers are listed for NSN 4320-01-526-0445?

NSN 4320-01-526-0445 has 1 manufacturer part number on file: 159-9453 (Caterpillar Inc Div Caterpillar Defense).

What are the specifications of 159-9453?

Key specifications for 159-9453: Special Features: PART OF 208-8338 PUMP AND MTG GROUP-PISTON AND GEAR,VIBRATORY-FIXED DISPLACEMENT 39CC; Part Name Assigned by Controlling Agency: PUMP GROUP-PISTON; End Item Identification: HYDRAULIC GROUP. 0 specifications are documented in the U.S. Government catalog.

Is NSN 4320-01-526-0445 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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