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90AC899-1 — ADAPTER,WAVEGUIDE

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

90AC899-1: ADAPTER,WAVEGUIDE.

The ADAPTER,WAVEGUIDE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY SINGLE TUBING SEGMENT AND FLANGE, flange_depth: 0.423 INCHES MINIMUM AND 0.453 INCHES MAXIMUM SINGLE FLANGE IN, flange_style: CHOKE TYPE SINGLE FLANGE, thread_class: 2B SINGLE FLANGE ALL CONNECTION FACILITIES, adapter_height: 1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM IN, adapter_length: 1.296 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5985-01-433-2277, 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
90AC899-1
NSN: 5985-01-433-2277
FSC: 5985 — Antennas, Waveguides, and Related Equipment
CAGE: 01456 — MICROWAVE DEVELOPMENT LABORATORIES, INC. DBA MICROWAVE DEVELOPMENT LABORATORIES INC (USA)
SPECIFICATIONS
materialALUMINUM ALLOY SINGLE TUBING SEGMENT AND FLANGE
flange_depth0.423 INCHES MINIMUM AND 0.453 INCHES MAXIMUM SINGLE FLANGE IN
flange_styleCHOKE TYPE SINGLE FLANGE
thread_class2B SINGLE FLANGE ALL CONNECTION FACILITIES
adapter_height1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM IN
adapter_length1.296 INCHES MAXIMUM IN
flange_quantity1
style_designatorWAVEGUIDE TO COAXIAL
thread_directionRIGHT-HAND SINGLE FLANGE ALL CONNECTION FACILITIES
surface_treatmentCHROMATE AND PAINT SINGLE TUBING SEGMENT AND FLANGE OUTSIDE SURFACES
flange_inside_width0.896 INCHES MINIMUM AND 0.904 INCHES MAXIMUM SINGLE FLANGE IN
nominal_thread_size0.138 INCHES SINGLE FLANGE ALL CONNECTION FACILITIES IN
NSN5985-01-433-2277
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available ADAPTER,WAVEGUIDE TITLE COMPONENT PN 90AC899-1 MFR ADAPTER,WAVEGUIDE
KEY FEATURES
•
TUBING WALL CONSTRUCTION STYLE: SEAMLESS SINGLE TUBING SEGMENT
•
FLANGE INSIDE HEIGHT: 0.396 INCHES MINIMUM AND 0.404 INCHES MAXIMUM SINGLE FLANGE IN
•
FLANGE QUANTITY: 1
•
VOLTAGE STANDING WAVE RATIO: 1.10
•
ADAPTER OVERALL WIDTH: 1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: WAVEGUIDE TO COAXIAL
•
WAVEGUIDE INSIDE WIDTH: 0.896 INCHES MINIMUM AND 0.904 INCHES MAXIMUM IN
•
CONNECTOR END DESIGN: FEMALE
TECHNICAL CHARACTERISTICS
TUBING WALL CONSTRUCTION STYLESEAMLESS SINGLE TUBING SEGMENT
FLANGE INSIDE HEIGHT0.396 INCHES MINIMUM AND 0.404 INCHES MAXIMUM SINGLE FLANGE IN
FLANGE QUANTITY1
VOLTAGE STANDING WAVE RATIO1.10
ADAPTER OVERALL WIDTH1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM IN
STYLE DESIGNATORWAVEGUIDE TO COAXIAL
WAVEGUIDE INSIDE WIDTH0.896 INCHES MINIMUM AND 0.904 INCHES MAXIMUM IN
CONNECTOR END DESIGNFEMALE
CROSS-SECTIONAL SHAPE STYLEINTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR
FLANGE OUTSIDE HEIGHT1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM SINGLE FLANGE IN
OTHER ITEMS IN FSC 5985 — Antennas, Waveguides, and Related Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5985-00-001-1854 5985-00-001-1862 5985-00-001-1869 5985-00-001-1870 5985-00-001-1871 5985-00-001-1874 5985-00-001-1875 5985-00-001-1876
SUBSTITUTES & CROSS-REFERENCES 1
929240-3CReference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — mutilation + specific procedure
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FREQUENTLY ASKED QUESTIONS
What is 90AC899-1?
90AC899-1 is a ADAPTER,WAVEGUIDE.
What parts can replace 90AC899-1?
There is 1 known substitute for 90AC899-1: 929240-3C. Substitute compatibility should be verified for your specific system.
What is the NSN for 90AC899-1?
90AC899-1 is cataloged in the U.S. Government catalog under NSN 5985-01-433-2277. 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.