PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILG2697TYPEAWindow,observation

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 9340-00-261-5712 · FSC 9340 · No Item Name Available
Verified by PartsTable
NSN 9340-00-261-5712 — this item is cataloged by the U.S. Government under National Stock Number 9340-00-261-5712. Primary manufacturer part number: MILG2697TYPEA.
Features
  • Window,observation — FSC 9340
  • Material Transparency: CLEAR
  • Style Designator: CIRCULAR
  • Edge Type: BEVELED
  • Material Document and Classification: DD-G-541,TYPE 1,CLASS A FED SPEC SINGLE MATERIAL RESPONSE
  • Material: GLASS
  • Nondefinitive Spec/std Data: A TYPE
  • Ply Quantity: 1
Applications
  • Applications requiring Glass construction
General Description

The Window,observation, cataloged under National Stock Number 9340-00-261-5712, is classified within Federal Supply Class 9340 (No Item Name Available) of the Nonmetallic Fabricated Materials group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 11 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN9340-00-261-5712
Primary Part NumberMILG2697TYPEA
Item NameWindow,observation
FSC / FSG9340 / 93 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Material TransparencyCLEAR
Style DesignatorCIRCULAR
Edge TypeBEVELED
Material Document and ClassificationDD-G-541,TYPE 1,CLASS A FED SPEC SINGLE MATERIAL RESPONSE
MaterialGLASS
Nondefinitive Spec/std DataA TYPE
Ply Quantity1
Overall Diameter16.438 INCHES MINIMUM AND 16.562 INCHES MAXIMUM IN
Surface FinishPOLISHED
Environmental ProtectionWEATHER RESISTANT
Overall Thickness0.688 INCHES MINIMUM AND 0.812 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
9340-00-141-7947 INTERCHANGEABLE
Window,observation
9340-00-290-7134 INTERCHANGEABLE
Window,observation
9340-00-526-5185200103DBPC463 INTERCHANGEABLE
Window,observation
Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions
6680-00-526-518725J671PC27 INTERCHANGEABLE
Glass,liquid Sight Indicator,fla
Northrop Grumman Systems Corporation Div Marine Systems
5355-00-668-7896B311-284 INTERCHANGEABLE
Window,dial
Northrop Grumman Systems Corp Dba Northrop Grumman Systems Corp
Cross-Reference Index
Part NumberManufacturer
MILG2697TYPEA Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
9340-00-141-7947INTERCHANGEABLE
WINDOW,OBSERVATION
9340-00-290-7134INTERCHANGEABLE
WINDOW,OBSERVATION
9340-00-526-5185INTERCHANGEABLE
WINDOW,OBSERVATION
200103DBPC463
6680-00-526-5187INTERCHANGEABLE
GLASS,LIQUID SIGHT INDICATOR,FLA
25J671PC27
5355-00-668-7896INTERCHANGEABLE
WINDOW,DIAL
B311-284

Frequently Asked Questions

What is NSN 9340-00-261-5712?

NSN 9340-00-261-5712 is a Window,observation, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 9340 (No Item Name Available). Status: active.

What are the part numbers for NSN 9340-00-261-5712?

NSN 9340-00-261-5712 has 1 cross-referenced part number: MILG2697TYPEA (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 9340-00-261-5712?

There are 5 known substitutes for 9340-00-261-5712: 9340-00-141-7947, 9340-00-290-7134, 9340-00-526-5185 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MILG2697TYPEA?

Key specifications for MILG2697TYPEA: Material Transparency: CLEAR; Style Designator: CIRCULAR; Edge Type: BEVELED; Material Document and Classification: DD-G-541,TYPE 1,CLASS A FED SPEC SINGLE MATERIAL RESPONSE. 11 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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