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277-0399-010 — COUPLER,DIRECTIONAL

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

277-0399-010: COUPLER,DIRECTIONAL.

The COUPLER,DIRECTIONAL is a the manufacturer industrial component. Key specifications include unit_type: COAXIAL LINE, design_type: BIDIRECTIONAL, usage_design: MAIN LINE TERMINAL FITTING, overall_width: 2.312 INCHES NOMINAL IN, overall_height: 1.375 INCHES NOMINAL IN, overall_length: 6.625 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5985-01-064-5189, 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
277-0399-010
NSN: 5985-01-064-5189
FSC: 5985 — Antennas, Waveguides, and Related Equipment
CAGE: 13499 — ROCKWELL COLLINS, INC. DBA COLLINS AEROSPACE GOVERNMENT SYSTEMS DIV COLLINS AEROSPACE - GOVERNMENT SYSTEMS (USA)
SPECIFICATIONS
unit_typeCOAXIAL LINE
design_typeBIDIRECTIONAL
usage_designMAIN LINE TERMINAL FITTING
overall_width2.312 INCHES NOMINAL IN
overall_height1.375 INCHES NOMINAL IN
overall_length6.625 INCHES MAXIMUM IN
identifying_numberTERMINAL FITTING TYPE N
power_loss_in_decibels3.0
radio_frequency_rating290.0 MEGAHERTZ MINIMUM AND 400.0 MEGAHERTZ MAXIMUM
NSN5985-01-064-5189
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available COUPLER,DIRECTIONAL TITLE COMPONENT PN 277-0399-010 MFR COUPLER,DIRECTIONAL
KEY FEATURES
•
USAGE DESIGN: MAIN LINE TERMINAL FITTING
•
POWER LOSS IN DECIBELS: 3.0
•
IDENTIFYING NUMBER: TERMINAL FITTING TYPE N
•
DESIGN TYPE: BIDIRECTIONAL
•
RADIO FREQUENCY RATING: 290.0 MEGAHERTZ MINIMUM AND 400.0 MEGAHERTZ MAXIMUM
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT1.375 INCHES NOMINAL IN
USAGE DESIGNMAIN LINE TERMINAL FITTING
POWER LOSS IN DECIBELS3.0
IDENTIFYING NUMBERTERMINAL FITTING TYPE N
DESIGN TYPEBIDIRECTIONAL
RADIO FREQUENCY RATING290.0 MEGAHERTZ MINIMUM AND 400.0 MEGAHERTZ MAXIMUM
OVERALL LENGTH6.625 INCHES MAXIMUM IN
OVERALL WIDTH2.312 INCHES NOMINAL IN
UNIT TYPECOAXIAL LINE
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
750BDReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 277-0399-010?
277-0399-010 is a COUPLER,DIRECTIONAL.
What parts can replace 277-0399-010?
There is 1 known substitute for 277-0399-010: 750BD. Substitute compatibility should be verified for your specific system.
What is the NSN for 277-0399-010?
277-0399-010 is cataloged in the U.S. Government catalog under NSN 5985-01-064-5189. 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.