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B4904M0D — WINDOW,OBSERVATION

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

B4904M0D: WINDOW,OBSERVATION.

The WINDOW,OBSERVATION is a the manufacturer industrial component. Key specifications include material: GLASS, overall_diameter: 1.250 INCHES NOMINAL IN, style_designator: CIRCULAR, overall_thickness: 0.312 INCHES NOMINAL IN, material_transparency: CLEAR. This part is cataloged in the U.S.

Government catalog under NSN 9340-00-798-5386, 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
B4904M0D
NSN: 9340-00-798-5386
FSC: 9340 — Glass Fabricated Materials
CAGE: 70925 — BIJUR LUBRICATING CORP (USA)
SPECIFICATIONS
materialGLASS
overall_diameter1.250 INCHES NOMINAL IN
style_designatorCIRCULAR
overall_thickness0.312 INCHES NOMINAL IN
material_transparencyCLEAR
NSN9340-00-798-5386
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available WINDOW,OBSERVATION TITLE COMPONENT PN B4904M0D MFR WINDOW,OBSERVATION
KEY FEATURES
•
OVERALL DIAMETER: 1.250 INCHES NOMINAL IN
•
OVERALL THICKNESS: 0.312 INCHES NOMINAL IN
•
MATERIAL TRANSPARENCY: CLEAR
•
STYLE DESIGNATOR: CIRCULAR
•
MATERIAL: GLASS
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER1.250 INCHES NOMINAL IN
OVERALL THICKNESS0.312 INCHES NOMINAL IN
MATERIAL TRANSPARENCYCLEAR
STYLE DESIGNATORCIRCULAR
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 1
73614-01X5PC18Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is B4904M0D?
B4904M0D is a WINDOW,OBSERVATION.
What parts can replace B4904M0D?
There is 1 known substitute for B4904M0D: 73614-01X5PC18. Substitute compatibility should be verified for your specific system.
What is the NSN for B4904M0D?
B4904M0D is cataloged in the U.S. Government catalog under NSN 9340-00-798-5386. 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.