PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

266C111Cushion,ear

Telephonics Corp · NSN 5965-00-578-8516 · FSC 5965 · No Item Name Available
Verified by PartsTable
NSN 5965-00-578-8516 — this item is cataloged by the U.S. Government under National Stock Number 5965-00-578-8516. Primary manufacturer part number: 266C111.
Features
  • Cushion,ear — FSC 5965
  • Earphone Cushion Inside Width: 1.625 INCHES NOMINAL IN
  • Earphone Cushion Outside Width: 3.688 INCHES NOMINAL IN
  • Earphone Cushion Inside Height: 1.625 INCHES NOMINAL IN
  • Earphone Cushion Outside Height: 4.375 INCHES NOMINAL IN
  • Earphone Cushion Thickness: 0.859 INCHES NOMINAL IN
  • Material: RUBBER SYNTHETIC EARPHONE CUSHION
  • Body Style: EARPHONE CUSHION, ELLIPTICAL
Applications
  • Applications requiring Rubber Synthetic Earphone Cushion construction
General Description

The Cushion,ear, cataloged under National Stock Number 5965-00-578-8516, is classified within Federal Supply Class 5965 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Telephonics Corp. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5965-00-578-8516
Primary Part Number266C111
Item NameCushion,ear
FSC / FSG5965 / 59 — No Item Name Available
ManufacturerTelephonics Corp
StatusCANCELLED
Earphone Cushion Inside Width1.625 INCHES NOMINAL IN
Earphone Cushion Outside Width3.688 INCHES NOMINAL IN
Earphone Cushion Inside Height1.625 INCHES NOMINAL IN
Earphone Cushion Outside Height4.375 INCHES NOMINAL IN
Earphone Cushion Thickness0.859 INCHES NOMINAL IN
MaterialRUBBER SYNTHETIC EARPHONE CUSHION
Body StyleEARPHONE CUSHION, ELLIPTICAL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
3110-00-120-30930074699-0 INTERCHANGEABLE
Bearing,roller,needle
New Holland Construction
5310-00-250-523419560 INTERCHANGEABLE
Nut,plain,hexagon
Avox Systems Inc Dba Avox Systems Inc
2530-00-383-4726 INTERCHANGEABLE
Shaft
6740-00-558-205819560 INTERCHANGEABLE
Electrode,fiber,pro
Hf Group Inc Dba Hf Group Inc
5340-00-840-0013TC118 INTERCHANGEABLE
Plate,mounting
Abb Installation Products Inc
5950-00-919-6146510-0051 INTERCHANGEABLE
Transformer,power
Continental Electronics Corp
1680-01-060-2836 INTERCHANGEABLE
Filter Assembly,actuator
5950-01-093-8318989113-26C INTERCHANGEABLE
Coil,radio Frequency
Raytheon Company Dba Raytheon
4520-01-247-7564510005-1 INTERCHANGEABLE
Heating Element,electrical,nonim
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
5920-01-366-454390001A1951 INTERCHANGEABLE
Fuseholder,receptacle
Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service
Cross-Reference Index
Part NumberManufacturer
510B005 Telephonics Corp (USA)
510-005-1 Van Dusen Aircraft Supplies Div of Van Dusen Air Inc (USA)
266C111 PRIMARY Telephonics Corp (USA)
NAF48490-1 Mason Electric Co. Dba Mason Controls (USA)
TC118 Telephonics Corp (USA)
NAF48490-1 Audiosears Corp Dba Audiosears Corp (USA)
19560 Roanwell, Llc (USA)
211C111 Telephonics Corp (USA)
NAF48490-1 Foam Products Inc (USA)
Related Parts
3110-00-120-3093INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
0074699-0
5310-00-250-5234INTERCHANGEABLE
NUT,PLAIN,HEXAGON
19560
2530-00-383-4726INTERCHANGEABLE
SHAFT
6740-00-558-2058INTERCHANGEABLE
ELECTRODE,FIBER,PRO
19560
5340-00-840-0013INTERCHANGEABLE
PLATE,MOUNTING
TC118
5950-00-919-6146INTERCHANGEABLE
TRANSFORMER,POWER
510-0051
1680-01-060-2836INTERCHANGEABLE
FILTER ASSEMBLY,ACTUATOR
5950-01-093-8318INTERCHANGEABLE
COIL,RADIO FREQUENCY
989113-26C
4520-01-247-7564INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,NONIM
510005-1
5920-01-366-4543INTERCHANGEABLE
FUSEHOLDER,RECEPTACLE
90001A1951
6515-01-592-1634INTERCHANGEABLE
SPHYGMOMANOMETER
7200-0001
4730-01-633-9827INTERCHANGEABLE
CLAMP,HOSE
19560

Frequently Asked Questions

What is NSN 5965-00-578-8516?

NSN 5965-00-578-8516 is a Cushion,ear, manufactured by Telephonics Corp, classified under FSC 5965 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5965-00-578-8516?

NSN 5965-00-578-8516 has 9 cross-referenced part numbers: 510B005 (Telephonics Corp), 510-005-1 (Van Dusen Aircraft Supplies Div of Van Dusen Air Inc), 266C111 (Telephonics Corp), NAF48490-1 (Mason Electric Co. Dba Mason Controls), TC118 (Telephonics Corp) and 4 more.

What NSN replaces 5965-00-578-8516?

There are 12 known substitutes for 5965-00-578-8516: 3110-00-120-3093, 5310-00-250-5234, 2530-00-383-4726 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 266C111?

Key specifications for 266C111: Earphone Cushion Inside Width: 1.625 INCHES NOMINAL IN; Earphone Cushion Outside Width: 3.688 INCHES NOMINAL IN; Earphone Cushion Inside Height: 1.625 INCHES NOMINAL IN; Earphone Cushion Outside Height: 4.375 INCHES NOMINAL IN. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5965-00-578-8516 still in active supply?

NSN 5965-00-578-8516 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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