PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

290200Window,observation

Unimac Co Inc · NSN 9340-01-378-0734 · FSC 9340 · No Item Name Available
Verified by PartsTable
NSN 9340-01-378-0734 — this item is cataloged by the U.S. Government under National Stock Number 9340-01-378-0734. Primary manufacturer part number: 290200.
Features
  • Window,observation — FSC 9340
  • Ply Quantity: 1
  • Material Transparency: CLEAR
  • Overall Thickness: 0.250 INCHES NOMINAL IN
  • Style Designator: CIRCULAR
  • Material: GLASS
  • Overall Diameter: 12.000 INCHES NOMINAL IN
  • 1 verified cross-reference
Applications
  • Applications requiring Glass construction
General Description

The Window,observation, cataloged under National Stock Number 9340-01-378-0734, is classified within Federal Supply Class 9340 (No Item Name Available) of the Nonmetallic Fabricated Materials group. The primary manufacturer of record is Unimac Co Inc. Government technical data includes 6 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
NSN9340-01-378-0734
Primary Part Number290200
Item NameWindow,observation
FSC / FSG9340 / 93 — No Item Name Available
ManufacturerUnimac Co Inc
StatusACTIVE
Ply Quantity1
Material TransparencyCLEAR
Overall Thickness0.250 INCHES NOMINAL IN
Style DesignatorCIRCULAR
MaterialGLASS
Overall Diameter12.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4730-00-287-0271 INTERCHANGEABLE
Nut,tube Coupling
1210-00-381-5891290200 INTERCHANGEABLE
Cap
Lockheed Martin Corporation Div Rms - Mitchel Field
Cross-Reference Index
Part NumberManufacturer
290200 Unimac Co Inc (USA)
Related Parts
4730-00-287-0271INTERCHANGEABLE
NUT,TUBE COUPLING
1210-00-381-5891INTERCHANGEABLE
CAP
290200

Frequently Asked Questions

What is NSN 9340-01-378-0734?

NSN 9340-01-378-0734 is a Window,observation, manufactured by Unimac Co Inc, classified under FSC 9340 (No Item Name Available). Status: active.

What are the part numbers for NSN 9340-01-378-0734?

NSN 9340-01-378-0734 has 1 cross-referenced part number: 290200 (Unimac Co Inc).

What NSN replaces 9340-01-378-0734?

There are 2 known substitutes for 9340-01-378-0734: 4730-00-287-0271, 1210-00-381-5891. Verify interchangeability with system specifications before substitution.

What are the specifications of 290200?

Key specifications for 290200: Ply Quantity: 1; Material Transparency: CLEAR; Overall Thickness: 0.250 INCHES NOMINAL IN; Style Designator: CIRCULAR. 8 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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