PartsTable TECHNICAL DATA SHEET

NSN 5340-01-644-0691Government record, cited

Plug, Vent5340-01-644-0691

NSN 5340-01-644-0691 · NIIN 016440691 · Part number 6408-H-04-O-SS

Brennan Industries, Inc. · FSC 5340 — Hardware, Commercial · FSG 53 — Hardware and Abrasives · CAGE 6KBN0

Government record, cited

NSN 5340-01-644-0691 — this item is cataloged by the U.S. Government under National Stock Number 5340-01-644-0691. Manufacturer of record part number: 6408-H-04-O-SS.

Also searched as 5340-01-644-0691 · 5340016440691 · NIIN 016440691 · 01-644-0691 · FSC 5340 Hardware, Commercial · CAGE 6KBN0 · 6408-H-04-O-SS · F163608 · F162233 · F162233 REV-ITEM NO. 14

Nearby stock numbers ← 5340-01-644-0685 Handwheel · 5340-01-644-0897 Bracket, Mounting →

Features

Plug,vent — FSC 5340
1 manufacturer part number on file
Manufacturer of record: Brennan Industries, Inc.

Identification

NSN: 5340-01-644-0691
NIIN: 016440691
FSC: 5340 — Hardware, Commercial
FSG: 53 — Hardware and Abrasives
Primary part number: 6408-H-04-O-SS
Manufacturer: Brennan Industries, Inc.

General Description

The Plug,vent, cataloged under National Stock Number 5340-01-644-0691, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Brennan Industries, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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. Unit of issue: EA.

Catalog Facts

Item Name	Plug,vent
FSC / FSG	5340 — Hardware, Commercial (FSG 53)
Manufacturers	Brennan Industries, Inc. (CAGE 6KBN0)

Technical Specifications

Parameter	Value
NSN	5340-01-644-0691
Primary Part Number	6408-H-04-O-SS
Item Name	Plug,vent
FSC / FSG	5340 / 53 — Hardware, Commercial
Manufacturer	Brennan Industries, Inc.
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	Possible hazard — SDS may be required (DLA HMIC P)
Criticality Code	X
Unit of Issue	EA

Cross-Reference Index

Part Number	Manufacturer
6408-H-04-O-SS PRIMARY	Brennan Industries, Inc. (USA)

Reference documents

Reference	Meaning
F163608	7/2 Vendor item drawing reference Lake Shore Systems, Inc.
F162233	D/9 Drawing number reference only Lake Shore Systems, Inc.
F162233 REV-ITEM NO. 14	5/1 Secondary reference Lake Shore Systems, Inc.

No interchangeability data on file.

Other items in FSC 5340 — Hardware, Commercial

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

5340-00-000-0068

COVER,ACCESS

5340-00-000-0132

SEAT,HELICAL COMPRESSION SPRING

5340-00-000-8150

5340-00-000-8150 · Item name not on file

5340-00-001-1251

5340-00-001-1251 · Item name not on file

5340-00-001-1264

STRAP,WEBBING

5340-00-001-1265

STRAP,WEBBING

5340-00-001-1266

STRAP,WEBBING

5340-00-001-1275

HANDLE,DOOR

Frequently Asked Questions

What is NSN 5340-01-644-0691?

NSN 5340-01-644-0691 is a Plug,vent, manufactured by Brennan Industries, Inc., classified under FSC 5340, Hardware, Commercial. Status: active.

What part numbers are listed for NSN 5340-01-644-0691?

NSN 5340-01-644-0691 has 1 manufacturer part number on file: 6408-H-04-O-SS (Brennan Industries, Inc.).

Is NSN 5340-01-644-0691 hazardous material?

Possible hazard — SDS may be required (DLA HMIC P). 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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