PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-G-3787Window,observation

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 9340-00-253-6071 · FSC 9340 · No Item Name Available
Verified by PartsTable
NSN 9340-00-253-6071 — this item is cataloged by the U.S. Government under National Stock Number 9340-00-253-6071. Primary manufacturer part number: MIL-G-3787.
Features
  • Window,observation — FSC 9340
  • Test Data Document: 81349-MIL-G-3787 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
  • Nondefinitive Spec/std Data: 2 CLASS
  • Material: GLASS LAMINATE
  • Material Document and Classification: DD-G-451 FED SPEC SINGLE MATERIAL RESPONSE
  • Style Designator: SQUARE CORNERS
  • Edge Type: FLAT FINISH
  • Overall Thickness: 0.250 INCHES NOMINAL IN
Applications
  • Applications requiring Glass Laminate construction
General Description

The Window,observation, cataloged under National Stock Number 9340-00-253-6071, 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 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 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
NSN9340-00-253-6071
Primary Part NumberMIL-G-3787
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
Test Data Document81349-MIL-G-3787 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Nondefinitive Spec/std Data2 CLASS
MaterialGLASS LAMINATE
Material Document and ClassificationDD-G-451 FED SPEC SINGLE MATERIAL RESPONSE
Style DesignatorSQUARE CORNERS
Edge TypeFLAT FINISH
Overall Thickness0.250 INCHES NOMINAL IN
Surface FinishPOLISHED
Material TransparencyCLEAR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5120-00-224-7099 INTERCHANGEABLE
Vise,pipe
4730-00-354-5180401-10S INTERCHANGEABLE
Adapter,straight,tube to Hose
Danfoss Power Solutions II, Llc
2530-00-483-07482506449 INTERCHANGEABLE
Cylinder Assembly,hydraulic Brak
Chrysler Realty Company Llc Dba Daimler Chrysler
5130-00-541-347340110 INTERCHANGEABLE
Blade,reciprocating Saw
Black and Decker Us Inc
2530-00-561-803340110 INTERCHANGEABLE
Shaft Asy
Trw Inc Trw Commercial Steering Div
5950-00-645-2099 INTERCHANGEABLE
Transformer,power
5961-00-903-045540110 INTERCHANGEABLE
Semiconductor Device,diode
Renesas Electronics America Inc
5999-01-083-0269 INTERCHANGEABLE
Clip,electrical
5365-01-306-949240110 INTERCHANGEABLE
Spacer,sleeve
Bell Intl Inc
5310-01-374-5423 INTERCHANGEABLE
Nut,plain,extended Washer,hexago
Cross-Reference Index
Part NumberManufacturer
MIL-G-3787 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
40-1-10 Emerson Electric Co Dba Brooks Instrument Division (USA)
40-1-10 Brooks Instrument Llc (USA)
Related Parts
5120-00-224-7099INTERCHANGEABLE
VISE,PIPE
4730-00-354-5180INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO HOSE
401-10S
2530-00-483-0748INTERCHANGEABLE
CYLINDER ASSEMBLY,HYDRAULIC BRAK
2506449
5130-00-541-3473INTERCHANGEABLE
BLADE,RECIPROCATING SAW
40110
2530-00-561-8033INTERCHANGEABLE
SHAFT ASY
40110
5950-00-645-2099INTERCHANGEABLE
TRANSFORMER,POWER
5961-00-903-0455INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
40110
5999-01-083-0269INTERCHANGEABLE
CLIP,ELECTRICAL
5365-01-306-9492INTERCHANGEABLE
SPACER,SLEEVE
40110
5310-01-374-5423INTERCHANGEABLE
NUT,PLAIN,EXTENDED WASHER,HEXAGO
7035-01-434-6120INTERCHANGEABLE
ERASER,MAGNETIC
5610-01-682-4418INTERCHANGEABLE
TRAFFIC AREA REPAIR
40110

Frequently Asked Questions

What is NSN 9340-00-253-6071?

NSN 9340-00-253-6071 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 9340-00-253-6071?

NSN 9340-00-253-6071 has 3 cross-referenced part numbers: MIL-G-3787 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 40-1-10 (Emerson Electric Co Dba Brooks Instrument Division), 40-1-10 (Brooks Instrument Llc).

What NSN replaces 9340-00-253-6071?

There are 12 known substitutes for 9340-00-253-6071: 5120-00-224-7099, 4730-00-354-5180, 2530-00-483-0748 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-G-3787?

Key specifications for MIL-G-3787: Test Data Document: 81349-MIL-G-3787 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).; Nondefinitive Spec/std Data: 2 CLASS; Material: GLASS LAMINATE; Material Document and Classification: DD-G-451 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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