PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1156-3Window,observation

Compass Water Solutions, Inc · NSN 9340-01-109-5552 · FSC 9340 · No Item Name Available
Verified by PartsTable
NSN 9340-01-109-5552 — this item is cataloged by the U.S. Government under National Stock Number 9340-01-109-5552. Primary manufacturer part number: 1156-3.
Features
  • Window,observation — FSC 9340
  • Overall Thickness: 0.250 INCHES NOMINAL IN
  • Material: GLASS SAFETY
  • Style Designator: CIRCULAR
  • Material Transparency: CLEAR
  • Overall Diameter: 2.000 INCHES NOMINAL IN
  • 2 verified cross-references
  • Primary manufacturer: Compass Water Solutions, Inc
Applications
  • Applications requiring Glass Safety construction
General Description

The Window,observation, cataloged under National Stock Number 9340-01-109-5552, is classified within Federal Supply Class 9340 (No Item Name Available) of the Nonmetallic Fabricated Materials group. The primary manufacturer of record is Compass Water Solutions, Inc. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN9340-01-109-5552
Primary Part Number1156-3
Item NameWindow,observation
FSC / FSG9340 / 93 — No Item Name Available
ManufacturerCompass Water Solutions, Inc
StatusACTIVE
Overall Thickness0.250 INCHES NOMINAL IN
MaterialGLASS SAFETY
Style DesignatorCIRCULAR
Material TransparencyCLEAR
Overall Diameter2.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5133-00-266-9478 INTERCHANGEABLE
Drill,twist
6125-00-316-3215 INTERCHANGEABLE
Winding,motor-Generator Field
5815-00-547-7890SM-C-186903GP8 INTERCHANGEABLE
Teletypewriter Subassembly
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5340-00-732-421411563 INTERCHANGEABLE
Hanger,pipe
Honeywell International Inc Dba Honeywell Div Consumer Products Group
5950-00-782-8192SM-C-586488 INTERCHANGEABLE
Reactor
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
4820-00-786-397111563 INTERCHANGEABLE
Valve,calibrated Flow
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
3020-01-228-8365 INTERCHANGEABLE
Gear,spur
4820-01-503-58941156 3" INTERCHANGEABLE
Valve,gate
Warren Alloy Valve and Fitting Co Inc
6220-01-512-7044971613-X03-WAN INTERCHANGEABLE
Light,indicator
Littelfuse, Inc.
Cross-Reference Index
Part NumberManufacturer
1156-3 Separation & Recovery Systems Inc (USA)
1156-3 PRIMARY Compass Water Solutions, Inc (USA)
Related Parts
5133-00-266-9478INTERCHANGEABLE
DRILL,TWIST
6125-00-316-3215INTERCHANGEABLE
WINDING,MOTOR-GENERATOR FIELD
5815-00-547-7890INTERCHANGEABLE
TELETYPEWRITER SUBASSEMBLY
SM-C-186903GP8
5340-00-732-4214INTERCHANGEABLE
HANGER,PIPE
11563
5950-00-782-8192INTERCHANGEABLE
REACTOR
SM-C-586488
4820-00-786-3971INTERCHANGEABLE
VALVE,CALIBRATED FLOW
11563
3020-01-228-8365INTERCHANGEABLE
GEAR,SPUR
4820-01-503-5894INTERCHANGEABLE
VALVE,GATE
1156 3"
6220-01-512-7044INTERCHANGEABLE
LIGHT,INDICATOR
971613-X03-WAN

Frequently Asked Questions

What is NSN 9340-01-109-5552?

NSN 9340-01-109-5552 is a Window,observation, manufactured by Compass Water Solutions, Inc, classified under FSC 9340 (No Item Name Available). Status: active.

What are the part numbers for NSN 9340-01-109-5552?

NSN 9340-01-109-5552 has 2 cross-referenced part numbers: 1156-3 (Separation & Recovery Systems Inc), 1156-3 (Compass Water Solutions, Inc).

What NSN replaces 9340-01-109-5552?

There are 9 known substitutes for 9340-01-109-5552: 5133-00-266-9478, 6125-00-316-3215, 5815-00-547-7890 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1156-3?

Key specifications for 1156-3: Overall Thickness: 0.250 INCHES NOMINAL IN; Material: GLASS SAFETY; Style Designator: CIRCULAR; Material Transparency: CLEAR. 5 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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