PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4666Window,observation

Hoyt Corporation · NSN 9340-00-884-2141 · FSC 9340 · No Item Name Available
Verified by PartsTable
NSN 9340-00-884-2141 — this item is cataloged by the U.S. Government under National Stock Number 9340-00-884-2141. Primary manufacturer part number: 4666.
Features
  • Window,observation — FSC 9340
  • Overall Diameter: 11.000 INCHES NOMINAL IN
  • Material Transparency: CLEAR
  • Style Designator: CIRCULAR
  • Material: GLASS
  • Overall Thickness: 0.537 INCHES NOMINAL IN
  • 2 verified cross-references
  • Primary manufacturer: Hoyt Corporation
Applications
  • Applications requiring Glass construction
General Description

The Window,observation, cataloged under National Stock Number 9340-00-884-2141, is classified within Federal Supply Class 9340 (No Item Name Available) of the Nonmetallic Fabricated Materials group. The primary manufacturer of record is Hoyt Corporation. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN9340-00-884-2141
Primary Part Number4666
Item NameWindow,observation
FSC / FSG9340 / 93 — No Item Name Available
ManufacturerHoyt Corporation
StatusACTIVE
Overall Diameter11.000 INCHES NOMINAL IN
Material TransparencyCLEAR
Style DesignatorCIRCULAR
MaterialGLASS
Overall Thickness0.537 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-108-9332109119-15 INTERCHANGEABLE
Bearing,ball,annular
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
4730-00-188-1864A733S-49CFB INTERCHANGEABLE
Nipple,pipe
American Society for Testing and Materials Dba Astm International
3455-00-254-846113500 INTERCHANGEABLE
Cutter,milling,convex
Niagara Cutter Inc
5310-00-387-9453 INTERCHANGEABLE
Nut,sleeve
4320-00-409-00334666-125-02-001 INTERCHANGEABLE
Pump Unit,centrifugal
Griswold Pump Co
4730-00-557-76104666 INTERCHANGEABLE
Coupling Assembly,quick Disconne
Safran Electronics & Defense, Avionics Usa, Llc Dba Use CAGE Code 879b2 for Cataloging
6135-00-643-1309 INTERCHANGEABLE
Battery,nonrechargeable
5330-00-802-34834666 INTERCHANGEABLE
Seal,nacelle
Flexco, Inc
5970-01-045-75974666 INTERCHANGEABLE
Insulator,plate
Keystone Electronics Corp
6760-01-064-2096 INTERCHANGEABLE
Stand,copy,photogra
Cross-Reference Index
Part NumberManufacturer
4666 PRIMARY Hoyt Corporation (USA)
40451 Zf Industrieantriebe Witten Gmbh (DEU)
Related Parts
3110-00-108-9332INTERCHANGEABLE
BEARING,BALL,ANNULAR
109119-15
4730-00-188-1864INTERCHANGEABLE
NIPPLE,PIPE
A733S-49CFB
3455-00-254-8461INTERCHANGEABLE
CUTTER,MILLING,CONVEX
13500
5310-00-387-9453INTERCHANGEABLE
NUT,SLEEVE
4320-00-409-0033INTERCHANGEABLE
PUMP UNIT,CENTRIFUGAL
4666-125-02-001
4730-00-557-7610INTERCHANGEABLE
COUPLING ASSEMBLY,QUICK DISCONNE
4666
6135-00-643-1309INTERCHANGEABLE
BATTERY,NONRECHARGEABLE
5330-00-802-3483INTERCHANGEABLE
SEAL,NACELLE
4666
5970-01-045-7597INTERCHANGEABLE
INSULATOR,PLATE
4666
6760-01-064-2096INTERCHANGEABLE
STAND,COPY,PHOTOGRA
4820-01-109-3159INTERCHANGEABLE
VALVE,GLOBE
MSS-SP80 TY2,CL125,SZ1IN
6515-01-131-6219INTERCHANGEABLE
SUCTION KIT,TRACHEAL

Frequently Asked Questions

What is NSN 9340-00-884-2141?

NSN 9340-00-884-2141 is a Window,observation, manufactured by Hoyt Corporation, classified under FSC 9340 (No Item Name Available). Status: active.

What are the part numbers for NSN 9340-00-884-2141?

NSN 9340-00-884-2141 has 2 cross-referenced part numbers: 4666 (Hoyt Corporation), 40451 (Zf Industrieantriebe Witten Gmbh).

What NSN replaces 9340-00-884-2141?

There are 12 known substitutes for 9340-00-884-2141: 3110-00-108-9332, 4730-00-188-1864, 3455-00-254-8461 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4666?

Key specifications for 4666: Overall Diameter: 11.000 INCHES NOMINAL IN; Material Transparency: CLEAR; Style Designator: CIRCULAR; Material: GLASS. 6 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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