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PartsTable / COMPONENT / 54175S5900-1079PC56
54175S5900-1079PC56 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The WINDOW,OBSERVATION is a the manufacturer industrial component. Key specifications include material: GLASS, overall_diameter: 1.938 INCHES NOMINAL IN, special_features: MUST BE STRESS-RELIEF ANNEALED, style_designator: CIRCULAR, overall_thickness: 0.625 INCHES NOMINAL IN, material_transparency: CLEAR. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 9340-00-297-5594, 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
54175S5900-1079PC56
NSN: 9340-00-297-5594
FSC: 9340
CAGE: 80064 — NAVAL SHIP SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialGLASS
ply_quantity1
overall_diameter1.938 INCHES NOMINAL IN
special_featuresMUST BE STRESS-RELIEF ANNEALED
style_designatorCIRCULAR
overall_thickness0.625 INCHES NOMINAL IN
material_transparencyCLEAR
NSN9340-00-297-5594
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available WINDOW,OBSERVATION TITLE COMPONENT PN 54175S5900-1079PC56 MFR WINDOW,OBSERVATION
KEY FEATURES
•
OVERALL THICKNESS: 0.625 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CIRCULAR
•
MATERIAL: GLASS
•
MATERIAL TRANSPARENCY: CLEAR
•
OVERALL DIAMETER: 1.938 INCHES NOMINAL IN
•
PLY QUANTITY: 1
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL THICKNESS0.625 INCHES NOMINAL IN
STYLE DESIGNATORCIRCULAR
MATERIALGLASS
SPECIAL FEATURESMUST BE STRESS-RELIEF ANNEALED
MATERIAL TRANSPARENCYCLEAR
OVERALL DIAMETER1.938 INCHES NOMINAL IN
PLY QUANTITY1
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
W8119589PC56Interchangeable
Same NIIN cross-reference
interchangeable
19C20A372Interchangeable
Same NIIN cross-reference
interchangeable
1882VS59-1-17PC6Interchangeable
Same NIIN cross-reference
interchangeable
1850VS59-1-17PC6Interchangeable
Same NIIN cross-reference
interchangeable
W8119570Interchangeable
Same NIIN cross-reference
interchangeable
PP8151554PC33Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 54175S5900-1079PC56?
54175S5900-1079PC56 is a WINDOW,OBSERVATION.
What parts can replace 54175S5900-1079PC56?
There are 9 known substitutes for 54175S5900-1079PC56: W8119589PC56, 19C20A372, 1882VS59-1-17PC6 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 54175S5900-1079PC56?
54175S5900-1079PC56 is cataloged in the Federal Logistics Information System (FLIS) under NSN 9340-00-297-5594. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026