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AC-B561-5981 — WINDOW,OBSERVATION

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

AC-B561-5981: WINDOW,OBSERVATION.

The WINDOW,OBSERVATION is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYAMIDE NYLON, edge_type: FLAT FINISH, overall_diameter: 0.960 INCHES NOMINAL IN, style_designator: CIRCULAR, overall_thickness: 0.500 INCHES NOMINAL IN, material_transparency: CLEAR. This part is cataloged in the U.S.

Government catalog under NSN 9330-01-099-2697, 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
AC-B561-5981
NSN: 9330-01-099-2697
FSC: 9330 — Plastics Fabricated Materials
CAGE: 18350 — PALL AEROPOWER CORPORATION (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON
edge_typeFLAT FINISH
overall_diameter0.960 INCHES NOMINAL IN
style_designatorCIRCULAR
overall_thickness0.500 INCHES NOMINAL IN
material_transparencyCLEAR
end_item_identificationACFT ENG J75
NSN9330-01-099-2697
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available WINDOW,OBSERVATION TITLE COMPONENT PN AC-B561-5981 MFR WINDOW,OBSERVATION
KEY FEATURES
•
OVERALL DIAMETER: 0.960 INCHES NOMINAL IN
•
OVERALL THICKNESS: 0.500 INCHES NOMINAL IN
•
MATERIAL TRANSPARENCY: CLEAR
•
STYLE DESIGNATOR: CIRCULAR
•
EDGE TYPE: FLAT FINISH
•
MATERIAL: PLASTIC POLYAMIDE NYLON
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER0.960 INCHES NOMINAL IN
OVERALL THICKNESS0.500 INCHES NOMINAL IN
MATERIAL TRANSPARENCYCLEAR
STYLE DESIGNATORCIRCULAR
EDGE TYPEFLAT FINISH
END ITEM IDENTIFICATIONACFT ENG J75
MATERIALPLASTIC POLYAMIDE NYLON
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 AC-B561-5981?
AC-B561-5981 is a WINDOW,OBSERVATION.
What is the NSN for AC-B561-5981?
AC-B561-5981 is cataloged in the U.S. Government catalog under NSN 9330-01-099-2697. 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.