PartsTable TECHNICAL DATA SHEET

NSN 4320-01-345-9379Government record, cited

Plunger, Ceramic4320-01-345-9379

NSN 4320-01-345-9379 · NIIN 013459379 · Part number 43957

Bourns Inc · FSC 4320 — Power and Hand Pumps · FSG 43 — Pumps and Compressors · CAGE 32997

Government record, cited

NSN 4320-01-345-9379 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-345-9379. Manufacturer of record part number: 43957.

Also searched as 4320-01-345-9379 · 4320013459379 · NIIN 013459379 · 01-345-9379 · FSC 4320 Power and Hand Pumps · CAGE 32997 · 43957 · 43957/57783 · 043957 · 043957

Nearby stock numbers ← 4320-01-345-9236 Pump · 4320-01-345-9419 Pump, Helm, Special →

Features

Plunger,ceramic — FSC 4320
2 manufacturer part numbers on file
Manufacturer of record: Bourns Inc

Identification

NSN: 4320-01-345-9379
NIIN: 013459379
FSC: 4320 — Power and Hand Pumps
FSG: 43 — Pumps and Compressors
Primary part number: 43957
Manufacturer: Bourns Inc

General Description

The Plunger,ceramic, cataloged under National Stock Number 4320-01-345-9379, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Bourns Inc. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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	4320-01-345-9379
Primary Part Number	43957
Item Name	Plunger,ceramic
FSC / FSG	4320 / 43 — Power and Hand Pumps
Manufacturer	Bourns 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
43957 PRIMARY	Bourns Inc (USA)
043957	Bourns Inc (USA)

Reference documents

Reference	Meaning
43957/57783	5/9 Secondary reference Slce Watermakers
43957	3/9 Design control — primary reference Cat Pumps Corp
043957	5/9 Secondary reference Cat Pumps Corp

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 4320-01-345-9379?

NSN 4320-01-345-9379 is a Plunger,ceramic, manufactured by Bourns Inc, classified under FSC 4320, Power and Hand Pumps. Status: active.

What part numbers are listed for NSN 4320-01-345-9379?

NSN 4320-01-345-9379 has 2 manufacturer part numbers on file: 43957 (Bourns Inc), 043957 (Bourns Inc).

What are the specifications of 43957?

Key specifications for 43957: End Item Identification: PUMP MODEL 3527. 0 specifications are documented in the U.S. Government catalog.

Is NSN 4320-01-345-9379 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.

PartsTable Design LLC · partstable.com