Protector, Hearing4240-01-392-3257

NSN 4240-01-392-3257 · NIIN 013923257 · Part number 71C2317

Gentex Corp · FSC 4240 — Safety and Rescue Equipment · FSG 42 — Fire Fighting, Rescue, and Safety Equipment · CAGE 72724

Government record, cited

NSN 4240-01-392-3257 — this item is cataloged by the U.S. Government under National Stock Number 4240-01-392-3257. Manufacturer of record part number: 71C2317.

Also searched as 4240-01-392-3257 · 4240013923257 · NIIN 013923257 · 01-392-3257 · FSC 4240 Safety and Rescue Equipment · CAGE 72724 · 71C2317

Nearby stock numbers ← 4240-01-392-2900 Ring, Safety, Breathing Hose · 4240-01-392-3260 Protector, Hearing →

Features

Protector,hearing — FSC 4240
1 manufacturer part number on file
Manufacturer of record: Gentex Corp

Identification

NSN: 4240-01-392-3257
NIIN: 013923257
FSC: 4240 — Safety and Rescue Equipment
FSG: 42 — Fire Fighting, Rescue, and Safety Equipment
Primary part number: 71C2317
Manufacturer: Gentex Corp

General Description

The Protector,hearing, cataloged under National Stock Number 4240-01-392-3257, is classified within Federal Supply Class 4240 (Safety and Rescue Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. The manufacturer of record is Gentex Corp. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Catalog Facts

Item Name	Protector,hearing
FSC / FSG	4240 — Safety and Rescue Equipment (FSG 42)
Manufacturers	Gentex Corp (CAGE 72724)

Technical Specifications

Parameter	Value
NSN	4240-01-392-3257
Primary Part Number	71C2317
Item Name	Protector,hearing
FSC / FSG	4240 / 42 — Safety and Rescue Equipment
Manufacturer	Gentex Corp
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	Possible hazard — SDS may be required (DLA HMIC P)

Cross-Reference Index

Part Number	Manufacturer
71C2317 PRIMARY	Gentex Corp (USA)

No interchangeability data on file.

Other items in FSC 4240 — Safety and Rescue Equipment

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

4240-00-001-1515

4240-00-001-1515 · Item name not on file

4240-00-001-2684

4240-00-001-2684 · Item name not on file

4240-00-006-0022

HOSE,EVACUATION

4240-00-007-4576

4240-00-007-4576 · Item name not on file

4240-00-007-8182

4240-00-007-8182 · Item name not on file

4240-00-007-8183

4240-00-007-8183 · Item name not on file

4240-00-007-8184

4240-00-007-8184 · Item name not on file

4240-00-007-8185

4240-00-007-8185 · Item name not on file

Frequently Asked Questions

What is NSN 4240-01-392-3257?

NSN 4240-01-392-3257 is a Protector,hearing, manufactured by Gentex Corp, classified under FSC 4240, Safety and Rescue Equipment. Status: active.

What part numbers are listed for NSN 4240-01-392-3257?

NSN 4240-01-392-3257 has 1 manufacturer part number on file: 71C2317 (Gentex Corp).

Is NSN 4240-01-392-3257 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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