NSN 4240-01-643-1949 · NIIN 016431949 · Part number 12452G-01
David Clark Co Inc Div David Clark Company, Inc. · FSC 4240 — Safety and Rescue Equipment · FSG 42 — Fire Fighting, Rescue, and Safety Equipment · CAGE 71483
Government record, cited
NSN 4240-01-643-1949 — this item is cataloged by the U.S. Government under National Stock Number 4240-01-643-1949. Manufacturer of record part number: 12452G-01.
Also searched as4240-01-643-1949 ·
4240016431949 ·
NIIN 016431949 ·
01-643-1949 ·
FSC 4240 Safety and Rescue Equipment · CAGE 71483 · 12452G-01
Manufacturer of record: David Clark Co Inc Div David Clark Company, Inc.
Identification
NSN: 4240-01-643-1949
NIIN: 016431949
FSC: 4240 — Safety and Rescue Equipment
FSG: 42 — Fire Fighting, Rescue, and Safety Equipment
Primary part number: 12452G-01
Manufacturer: David Clark Co Inc Div David Clark Company, Inc.
General Description
The Protector,hearing, cataloged under National Stock Number 4240-01-643-1949, 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 David Clark Co Inc Div David Clark Company, Inc.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4240-01-643-1949
Primary Part Number
12452G-01
Item Name
Protector,hearing
FSC / FSG
4240 / 42 — Safety and Rescue Equipment
Manufacturer
David Clark Co Inc Div David Clark Company, 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)
David Clark Co Inc Div David Clark Company, Inc. (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 4240-01-643-1949?
NSN 4240-01-643-1949 is a Protector,hearing, manufactured by David Clark Co Inc Div David Clark Company, Inc., classified under FSC 4240, Safety and Rescue Equipment. Status: active.
What part numbers are listed for NSN 4240-01-643-1949?
NSN 4240-01-643-1949 has 1 manufacturer part number on file: 12452G-01 (David Clark Co Inc Div David Clark Company, Inc.).
What are the specifications of 12452G-01?
Key specifications for 12452G-01: Part Name Assigned by Controlling Agency: HEADPADS, COMMUNICATION; End Item Identification: COMMUNICATION EQUIPMENT FOR HIGH-NOISE ENVIRONMENTS. 0 specifications are documented in the U.S. Government catalog.
Is NSN 4240-01-643-1949 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.