PartsTable TECHNICAL DATA SHEET

NSN 4320-01-231-4040Government record, cited

Button, Vent, Valve4320-01-231-4040

NSN 4320-01-231-4040 · NIIN 012314040 · Part number 2497805

Ontic Engineering & Manufacturing, Inc Dba Ontic Us · FSC 4320 — Power and Hand Pumps · FSG 43 — Pumps and Compressors · CAGE 45934

Government record, cited

NSN 4320-01-231-4040 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-231-4040. Manufacturer of record part number: 2497805.

Also searched as 4320-01-231-4040 · 4320012314040 · NIIN 012314040 · 01-231-4040 · FSC 4320 Power and Hand Pumps · CAGE 45934 · 2497805

Nearby stock numbers ← 4320-01-231-3618 Rotor, Pump · 4320-01-231-4149 Cover, Hydraulic, Pump-Motor →

Features

Button,vent,valve — FSC 4320
1 manufacturer part number on file
Manufacturer of record: Ontic Engineering & Manufacturing, Inc Dba Ontic Us

Identification

NSN: 4320-01-231-4040
NIIN: 012314040
FSC: 4320 — Power and Hand Pumps
FSG: 43 — Pumps and Compressors
Primary part number: 2497805
Manufacturer: Ontic Engineering & Manufacturing, Inc Dba Ontic Us

General Description

The Button,vent,valve, cataloged under National Stock Number 4320-01-231-4040, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Ontic Engineering & Manufacturing, Inc Dba Ontic Us. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Catalog Facts

Item Name	Button,vent,valve
FSC / FSG	4320 — Power and Hand Pumps (FSG 43)
Manufacturers	Ontic Engineering & Manufacturing, Inc Dba Ontic Us (CAGE 45934)

Technical Specifications

Parameter	Value
NSN	4320-01-231-4040
Primary Part Number	2497805
Item Name	Button,vent,valve
FSC / FSG	4320 / 43 — Power and Hand Pumps
Manufacturer	Ontic Engineering & Manufacturing, Inc Dba Ontic Us
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL Q — CCL Item — Commerce Control List
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

Cross-Reference Index

Part Number	Manufacturer
2497805	Ontic Engineering & Manufacturing, Inc Dba Ontic Us (USA)

Reference documents

Reference	Meaning
2497805	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 4320-01-231-4040?

NSN 4320-01-231-4040 is a Button,vent,valve, manufactured by Ontic Engineering & Manufacturing, Inc Dba Ontic Us, classified under FSC 4320, Power and Hand Pumps. Status: active.

What part numbers are listed for NSN 4320-01-231-4040?

NSN 4320-01-231-4040 has 1 manufacturer part number on file: 2497805 (Ontic Engineering & Manufacturing, Inc Dba Ontic Us).

Is NSN 4320-01-231-4040 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.

What is the DEMIL code for NSN 4320-01-231-4040?

NSN 4320-01-231-4040 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.

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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