PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

D020AWindow,observation

Cecilware Corporation · NSN 9340-01-277-5934 · FSC 9340 · No Item Name Available
Verified by PartsTable
NSN 9340-01-277-5934 — this item is cataloged by the U.S. Government under National Stock Number 9340-01-277-5934. Primary manufacturer part number: D020A.
Features
  • Window,observation — FSC 9340
  • Material: GLASS BOROSILICATE
  • Features Provided: FRAME AND TEMPERED
  • Style Designator: CIRCULAR
  • Overall Diameter: 10.750 INCHES NOMINAL IN
  • Environmental Protection: HIGH TEMPERATURE RESISTANT
  • Material Transparency: CLEAR
  • Overall Thickness: 0.375 INCHES NOMINAL IN
Applications
  • Applications requiring Glass Borosilicate construction
General Description

The Window,observation, cataloged under National Stock Number 9340-01-277-5934, is classified within Federal Supply Class 9340 (No Item Name Available) of the Nonmetallic Fabricated Materials group. The primary manufacturer of record is Cecilware Corporation. Government technical data includes 7 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
NSN9340-01-277-5934
Primary Part NumberD020A
Item NameWindow,observation
FSC / FSG9340 / 93 — No Item Name Available
ManufacturerCecilware Corporation
StatusACTIVE
MaterialGLASS BOROSILICATE
Features ProvidedFRAME AND TEMPERED
Style DesignatorCIRCULAR
Overall Diameter10.750 INCHES NOMINAL IN
Environmental ProtectionHIGH TEMPERATURE RESISTANT
Material TransparencyCLEAR
Overall Thickness0.375 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5136-01-028-4304D020 INTERCHANGEABLE
Die,thread Cutting
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
Cross-Reference Index
Part NumberManufacturer
D020A Cecilware Corporation (USA)
Related Parts
5136-01-028-4304INTERCHANGEABLE
DIE,THREAD CUTTING
D020

Frequently Asked Questions

What is NSN 9340-01-277-5934?

NSN 9340-01-277-5934 is a Window,observation, manufactured by Cecilware Corporation, classified under FSC 9340 (No Item Name Available). Status: active.

What are the part numbers for NSN 9340-01-277-5934?

NSN 9340-01-277-5934 has 1 cross-referenced part number: D020A (Cecilware Corporation).

What NSN replaces 9340-01-277-5934?

There is 1 known substitute for 9340-01-277-5934: 5136-01-028-4304. Verify interchangeability with system specifications before substitution.

What are the specifications of D020A?

Key specifications for D020A: Special Features: FRAME STEEL,STAINLESS; Material: GLASS BOROSILICATE; Features Provided: FRAME AND TEMPERED; 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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