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216990500201 — WINDOW,OBSERVATION

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

216990500201: WINDOW,OBSERVATION.

The WINDOW,OBSERVATION is a the manufacturer industrial component. Key specifications include material: GLASS, overall_diameter: 2.187 INCHES NOMINAL IN, special_features: PYREX, style_designator: CIRCULAR, overall_thickness: 0.250 INCHES NOMINAL IN, material_transparency: CLEAR. This part is cataloged in the U.S.

Government catalog under NSN 9340-01-462-2191, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
216990500201
NSN: 9340-01-462-2191
FSC: 9340 — Glass Fabricated Materials
CAGE: 02AM8 — KEWANEE BOILER MFG CO (USA)
SPECIFICATIONS
materialGLASS
overall_diameter2.187 INCHES NOMINAL IN
special_featuresPYREX
style_designatorCIRCULAR
overall_thickness0.250 INCHES NOMINAL IN
material_transparencyCLEAR
end_item_identificationBOILER, AUXILIARY P/N 852181-B ONBOARD 420 FT WAGB COAST GUARD VESSELS FT
temp_at_maximum_operating_pressure450.0 FAHRENHEIT DEGF
NSN9340-01-462-2191
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available WINDOW,OBSERVATION TITLE COMPONENT PN 216990500201 MFR WINDOW,OBSERVATION
KEY FEATURES
•
OVERALL DIAMETER: 2.187 INCHES NOMINAL IN
•
OVERALL THICKNESS: 0.250 INCHES NOMINAL IN
•
MATERIAL TRANSPARENCY: CLEAR
•
STYLE DESIGNATOR: CIRCULAR
•
TEMP AT MAXIMUM OPERATING PRESSURE: 450.0 FAHRENHEIT DEGF
•
MATERIAL: GLASS
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER2.187 INCHES NOMINAL IN
OVERALL THICKNESS0.250 INCHES NOMINAL IN
MATERIAL TRANSPARENCYCLEAR
STYLE DESIGNATORCIRCULAR
TEMP AT MAXIMUM OPERATING PRESSURE450.0 FAHRENHEIT DEGF
SPECIAL FEATURESPYREX
END ITEM IDENTIFICATIONBOILER, AUXILIARY P/N 852181-B ONBOARD 420 FT WAGB COAST GUARD VESSELS FT
MATERIALGLASS
OTHER ITEMS IN FSC 9340 — Glass Fabricated Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
9340-00-001-2702 9340-00-001-3590 9340-00-001-3591 9340-00-001-3592 9340-00-003-0380 9340-00-003-1497 9340-00-003-1553 9340-00-003-7325
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 216990500201?
216990500201 is a WINDOW,OBSERVATION.
What is the NSN for 216990500201?
216990500201 is cataloged in the U.S. Government catalog under NSN 9340-01-462-2191. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.