PartsTable TECHNICAL DATA SHEET

NSN 4320-00-398-7587Government record, cited

Head, Hydraulic Motor-Pump4320-00-398-7587

NSN 4320-00-398-7587 · NIIN 003987587 · Part number 3-375-005-638

Viking Pump, Inc · FSC 4320 — Power and Hand Pumps · FSG 43 — Pumps and Compressors · CAGE 63097

Government record, cited

NSN 4320-00-398-7587 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-398-7587. Manufacturer of record part number: 3-375-005-638.

Also searched as 4320-00-398-7587 · 4320003987587 · NIIN 003987587 · 00-398-7587 · FSC 4320 Power and Hand Pumps · CAGE 63097 · 3-375-005-638 · BA1020-1PC12-16 · BA972PC12-16 · A6B15ANDJ226KM

Nearby stock numbers ← 4320-00-398-7586 Rotor, Pump · 4320-00-398-7588 Idler and Bushing →

Features

Head,hydraulic Motor-Pump — FSC 4320
1 manufacturer part number on file
Manufacturer of record: Viking Pump, Inc

Identification

NSN: 4320-00-398-7587
NIIN: 003987587
FSC: 4320 — Power and Hand Pumps
FSG: 43 — Pumps and Compressors
Primary part number: 3-375-005-638
Manufacturer: Viking Pump, Inc

General Description

The Head,hydraulic Motor-Pump, cataloged under National Stock Number 4320-00-398-7587, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Viking Pump, Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4320-00-398-7587
Primary Part Number	3-375-005-638
Item Name	Head,hydraulic Motor-Pump
FSC / FSG	4320 / 43 — Power and Hand Pumps
Manufacturer	Viking Pump, Inc
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
3-375-005-638 PRIMARY	Viking Pump, Inc (USA)

Reference documents

Reference	Meaning
BA1020-1PC12-16	5/9 Secondary reference Viking Pump, Inc
BA972PC12-16	5/9 Secondary reference Viking Pump, Inc
A6B15ANDJ226KM	5/9 Secondary reference Viking Pump, Inc

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 4320-00-398-7587?

NSN 4320-00-398-7587 is a Head,hydraulic Motor-Pump, manufactured by Viking Pump, Inc, classified under FSC 4320, Power and Hand Pumps. Status: active.

What part numbers are listed for NSN 4320-00-398-7587?

NSN 4320-00-398-7587 has 1 manufacturer part number on file: 3-375-005-638 (Viking Pump, Inc).

What are the specifications of 3-375-005-638?

Key specifications for 3-375-005-638: Special Features: 7.625 IN. OD;3,000 IN. H;INCLUDES: 2-375-005-406 HEAD 1;2-435-011-740 PIN 1 IN. 0 specifications are documented in the U.S. Government catalog.

Is NSN 4320-00-398-7587 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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