PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

851-00001-000Window,observation

Aqua-Chem, Inc. · NSN 9340-01-386-5125 · FSC 9340 · No Item Name Available
Verified by PartsTable
NSN 9340-01-386-5125 — this item is cataloged by the U.S. Government under National Stock Number 9340-01-386-5125. Primary manufacturer part number: 851-00001-000.
Features
  • Window,observation — FSC 9340
  • Material Transparency: CLEAR
  • Style Designator: CIRCULAR
  • Material: GLASS
  • Overall Thickness: 0.750 INCHES NOMINAL IN
  • Overall Diameter: 6.000 INCHES NOMINAL IN
  • Surface Finish: FINE FINISHED
  • 6 verified cross-references
Applications
  • Applications requiring Glass construction
General Description

The Window,observation, cataloged under National Stock Number 9340-01-386-5125, is classified within Federal Supply Class 9340 (No Item Name Available) of the Nonmetallic Fabricated Materials group. The primary manufacturer of record is Aqua-Chem, Inc.. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 2 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
NSN9340-01-386-5125
Primary Part Number851-00001-000
Item NameWindow,observation
FSC / FSG9340 / 93 — No Item Name Available
ManufacturerAqua-Chem, Inc.
StatusACTIVE
Material TransparencyCLEAR
Style DesignatorCIRCULAR
MaterialGLASS
Overall Thickness0.750 INCHES NOMINAL IN
Overall Diameter6.000 INCHES NOMINAL IN
Surface FinishFINE FINISHED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5815-00-125-81948511 INTERCHANGEABLE
Lever
Telemechanics Inc
5995-00-136-31608511 INTERCHANGEABLE
Cable Assembly,radio Frequency
Times Microwave Systems, Inc Dba Times Microwave Systems Inc Div Times Microwave Systems
3110-00-157-6029M1085A INTERCHANGEABLE
Bearing,ball,annular
Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
5945-00-247-5529 INTERCHANGEABLE
Relay,electromagnetic
9340-00-292-375017Y1716PC14 INTERCHANGEABLE
Window,observation
Naval Ship Systems Command
5330-00-576-4401 INTERCHANGEABLE
Seal,plain Encased
4920-00-870-52168-5-1-1 INTERCHANGEABLE
Adapter Kit,test
Celtech Corporation Div Use CAGE 65552 for All Orders
1680-00-942-8299851-1 INTERCHANGEABLE
Tilting Pan,seat
Ami Industries, Inc Div Utc Aerospace Systems
5365-01-156-3823A3190407 INTERCHANGEABLE
Spacer,sleeve
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
4240-01-247-23488511 INTERCHANGEABLE
Mask,air Filtering
3m Company
Cross-Reference Index
Part NumberManufacturer
550-07537-001 Aqua-Chem, Inc. (USA)
550-7537 Aqua-Chem, Inc. (USA)
851-1 Aqua-Chem, Inc. (USA)
550-7537 IT NO 2 Aqua-Chem, Inc. (USA)
851-00001-000 Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA)
851-00001-000 PRIMARY Aqua-Chem, Inc. (USA)
Related Parts
5815-00-125-8194INTERCHANGEABLE
LEVER
8511
5995-00-136-3160INTERCHANGEABLE
CABLE ASSEMBLY,RADIO FREQUENCY
8511
3110-00-157-6029INTERCHANGEABLE
BEARING,BALL,ANNULAR
M1085A
5945-00-247-5529INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
9340-00-292-3750INTERCHANGEABLE
WINDOW,OBSERVATION
17Y1716PC14
5330-00-576-4401INTERCHANGEABLE
SEAL,PLAIN ENCASED
4920-00-870-5216INTERCHANGEABLE
ADAPTER KIT,TEST
8-5-1-1
1680-00-942-8299INTERCHANGEABLE
TILTING PAN,SEAT
851-1
5365-01-156-3823INTERCHANGEABLE
SPACER,SLEEVE
A3190407
4240-01-247-2348INTERCHANGEABLE
MASK,AIR FILTERING
8511
9340-01-280-2364INTERCHANGEABLE
WINDOW,OBSERVATION
5310-01-419-4448INTERCHANGEABLE
WASHER,SHOULDERED
841100

Frequently Asked Questions

What is NSN 9340-01-386-5125?

NSN 9340-01-386-5125 is a Window,observation, manufactured by Aqua-Chem, Inc., classified under FSC 9340 (No Item Name Available). Status: active.

What are the part numbers for NSN 9340-01-386-5125?

NSN 9340-01-386-5125 has 6 cross-referenced part numbers: 550-07537-001 (Aqua-Chem, Inc.), 550-7537 (Aqua-Chem, Inc.), 851-1 (Aqua-Chem, Inc.), 550-7537 IT NO 2 (Aqua-Chem, Inc.), 851-00001-000 (Aqua-Chem, Inc. Dba Aqua-Chem Inc) and 1 more.

What NSN replaces 9340-01-386-5125?

There are 12 known substitutes for 9340-01-386-5125: 5815-00-125-8194, 5995-00-136-3160, 3110-00-157-6029 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 851-00001-000?

Key specifications for 851-00001-000: Material Transparency: CLEAR; Style Designator: CIRCULAR; Material: GLASS; Overall Thickness: 0.750 INCHES NOMINAL IN. 6 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com