PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

C101961Protector,hearing

Otto Engineering Inc · NSN 4240-01-652-5264 · FSC 4240 · No Item Name Available
Verified by PartsTable
NSN 4240-01-652-5264 — this item is cataloged by the U.S. Government under National Stock Number 4240-01-652-5264. Primary manufacturer part number: C101961.
Features
  • Protector,hearing — FSC 4240
  • Furnished Items: HEADBAND CUSHION
  • Body Style: HEADSET, COVERED
  • Headband Type: ANY ACCEPTABLE
  • Accommodated Helmet Type: TALKER
  • 1 verified cross-reference
  • Primary manufacturer: Otto Engineering Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Protector,hearing, cataloged under National Stock Number 4240-01-652-5264, is classified within Federal Supply Class 4240 (No Item Name Available) of the Fire Fighting, Rescue, and Safety Equipment group. The primary manufacturer of record is Otto Engineering Inc. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4240-01-652-5264
Primary Part NumberC101961
Item NameProtector,hearing
FSC / FSG4240 / 42 — No Item Name Available
ManufacturerOtto Engineering Inc
StatusACTIVE
Furnished ItemsHEADBAND CUSHION
Body StyleHEADSET, COVERED
Headband TypeANY ACCEPTABLE
Accommodated Helmet TypeTALKER
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5998-01-175-8505C10196-1 INTERCHANGEABLE
Extractor,electrical Card
Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company
Cross-Reference Index
Part NumberManufacturer
C101961 PRIMARY Otto Engineering Inc (USA)
Related Parts
5998-01-175-8505INTERCHANGEABLE
EXTRACTOR,ELECTRICAL CARD
C10196-1

Frequently Asked Questions

What is NSN 4240-01-652-5264?

NSN 4240-01-652-5264 is a Protector,hearing, manufactured by Otto Engineering Inc, classified under FSC 4240 (No Item Name Available). Status: active.

What are the part numbers for NSN 4240-01-652-5264?

NSN 4240-01-652-5264 has 1 cross-referenced part number: C101961 (Otto Engineering Inc).

What NSN replaces 4240-01-652-5264?

There is 1 known substitute for 4240-01-652-5264: 5998-01-175-8505. Verify interchangeability with system specifications before substitution.

What are the specifications of C101961?

Key specifications for C101961: Furnished Items: HEADBAND CUSHION; Body Style: HEADSET, COVERED; Headband Type: ANY ACCEPTABLE; Accommodated Helmet Type: TALKER. 4 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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