PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

73218Window,observation

L3harris Technologies, Inc Div Space & Airborne Systems · NSN 9330-00-546-6258 · FSC 9330 · No Item Name Available
Verified by PartsTable
NSN 9330-00-546-6258 — this item is cataloged by the U.S. Government under National Stock Number 9330-00-546-6258. Primary manufacturer part number: 73218.
Features
  • Window,observation — FSC 9330
  • Material Transparency: CLEAR
  • Style Designator: CIRCULAR
  • Material: GLASS
  • Heat Absorbing Characteristic: HIGH LIGHT TRANSMISSION
  • Edge Type: FLAT FINISH
  • Material Document and Classification: DD-G-451 FED SPEC SINGLE MATERIAL RESPONSE
  • Ply Quantity: 1
Applications
  • Applications requiring Glass construction
General Description

The Window,observation, cataloged under National Stock Number 9330-00-546-6258, is classified within Federal Supply Class 9330 (No Item Name Available) of the Nonmetallic Fabricated Materials group. The primary manufacturer of record is L3harris Technologies, Inc Div Space & Airborne Systems. Government technical data includes 10 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN9330-00-546-6258
Primary Part Number73218
Item NameWindow,observation
FSC / FSG9330 / 93 — No Item Name Available
ManufacturerL3harris Technologies, Inc Div Space & Airborne Systems
StatusACTIVE
Material TransparencyCLEAR
Style DesignatorCIRCULAR
MaterialGLASS
Heat Absorbing CharacteristicHIGH LIGHT TRANSMISSION
Edge TypeFLAT FINISH
Material Document and ClassificationDD-G-451 FED SPEC SINGLE MATERIAL RESPONSE
Ply Quantity1
Surface FinishFINE FINISHED
Overall Thickness0.125 INCHES NOMINAL IN
Overall Diameter3.344 INCHES MINIMUM AND 3.375 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5920-01-107-66134K5122 INTERCHANGEABLE
Fuseholder,extractor Post
Caterpillar Inc Div Caterpillar Defense
2540-01-590-815773218 INTERCHANGEABLE
Motor,hydraulic
Tulsa Winch, Inc.
Cross-Reference Index
Part NumberManufacturer
73218 PRIMARY L3harris Technologies, Inc Div Space & Airborne Systems (USA)
Related Parts
5920-01-107-6613INTERCHANGEABLE
FUSEHOLDER,EXTRACTOR POST
4K5122
2540-01-590-8157INTERCHANGEABLE
MOTOR,HYDRAULIC
73218

Frequently Asked Questions

What is NSN 9330-00-546-6258?

NSN 9330-00-546-6258 is a Window,observation, manufactured by L3harris Technologies, Inc Div Space & Airborne Systems, classified under FSC 9330 (No Item Name Available). Status: active.

What are the part numbers for NSN 9330-00-546-6258?

NSN 9330-00-546-6258 has 1 cross-referenced part number: 73218 (L3harris Technologies, Inc Div Space & Airborne Systems).

What NSN replaces 9330-00-546-6258?

There are 2 known substitutes for 9330-00-546-6258: 5920-01-107-6613, 2540-01-590-8157. Verify interchangeability with system specifications before substitution.

What are the specifications of 73218?

Key specifications for 73218: Material Transparency: CLEAR; Style Designator: CIRCULAR; Material: GLASS; Heat Absorbing Characteristic: HIGH LIGHT TRANSMISSION. 10 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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