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399271 — COUPLING,WAVEGUIDE

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

399271: COUPLING,WAVEGUIDE.

The COUPLING,WAVEGUIDE is a the manufacturer industrial component. Key specifications include material: ALUMINUM SINGLE FLANGE, style_designator: ROUND, coupling_overall_depth: 4.750 INCHES NOMINAL IN, coupling_outside_diameter: 6.250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5985-01-018-2368, 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
399271
NSN: 5985-01-018-2368
FSC: 5985 — Antennas, Waveguides, and Related Equipment
CAGE: 16733 — RFS TECHNOLOGIES, INC. (USA)
SPECIFICATIONS
materialALUMINUM SINGLE FLANGE
style_designatorROUND
coupling_overall_depth4.750 INCHES NOMINAL IN
coupling_outside_diameter6.250 INCHES NOMINAL IN
NSN5985-01-018-2368
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available COUPLING,WAVEGUIDE TITLE COMPONENT PN 399271 MFR COUPLING,WAVEGUIDE
KEY FEATURES
•
STYLE DESIGNATOR: ROUND
•
COUPLING OUTSIDE DIAMETER: 6.250 INCHES NOMINAL IN
•
MATERIAL: ALUMINUM SINGLE FLANGE
•
COUPLING OVERALL DEPTH: 4.750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORROUND
COUPLING OUTSIDE DIAMETER6.250 INCHES NOMINAL IN
MATERIALALUMINUM SINGLE FLANGE
COUPLING OVERALL DEPTH4.750 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 2
191-284Reference document
Same NSN cross-reference
Reference document — Secondary reference
PA139-71-1Reference document
Same NSN cross-reference
Reference document — Secondary 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 399271?
399271 is a COUPLING,WAVEGUIDE.
What parts can replace 399271?
There are 2 known substitutes for 399271: 191-284, PA139-71-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 399271?
399271 is cataloged in the U.S. Government catalog under NSN 5985-01-018-2368. 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.