PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2605379-20Coupler,directional

Alliant Techsystems Operations Llc Div Defense Electronic Systems · NSN 5985-00-249-1681 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-249-1681 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-249-1681. Primary manufacturer part number: 2605379-20.
Features
  • Coupler,directional — FSC 5985
  • Power Loss in Decibels: 20.0
  • Unit Type: TRANSMISSION LINE
  • Identifying Number: TERMINAL FITTING N
  • Usage Design: MAIN LINE TERMINAL FITTING
  • Terminal Fitting Controlling Agency: AN
  • Design Type: BIDIRECTIONAL
  • 2 verified cross-references
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Coupler,directional, cataloged under National Stock Number 5985-00-249-1681, is classified within Federal Supply Class 5985 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Alliant Techsystems Operations Llc Div Defense Electronic Systems. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5985-00-249-1681
Primary Part Number2605379-20
Item NameCoupler,directional
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerAlliant Techsystems Operations Llc Div Defense Electronic Systems
StatusACTIVE
Power Loss in Decibels20.0
Unit TypeTRANSMISSION LINE
Identifying NumberTERMINAL FITTING N
Usage DesignMAIN LINE TERMINAL FITTING
Terminal Fitting Controlling AgencyAN
Design TypeBIDIRECTIONAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5935-00-128-5999 INTERCHANGEABLE
Jack Assembly,tip
5330-00-291-045522690 INTERCHANGEABLE
Gasket
Curtiss-Wright Controls, Inc. Div Actuation Division
5950-00-761-88789120-0065 INTERCHANGEABLE
Transformer,audio Frequency
Keysight Technologies Inc
5965-00-844-977867B1854 INTERCHANGEABLE
Boom,microphone
Air Force Lifecycle Management Center Electronic Components (aflcmc/ezss)
5950-01-154-44643479966-5 INTERCHANGEABLE
Coil,radio Frequency
Raytheon Company Dba Raytheon
Cross-Reference Index
Part NumberManufacturer
22690 Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq (USA)
2605379-20 PRIMARY Alliant Techsystems Operations Llc Div Defense Electronic Systems (USA)
Related Parts
5935-00-128-5999INTERCHANGEABLE
JACK ASSEMBLY,TIP
5330-00-291-0455INTERCHANGEABLE
GASKET
22690
5950-00-761-8878INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
9120-0065
5965-00-844-9778INTERCHANGEABLE
BOOM,MICROPHONE
67B1854
5950-01-154-4464INTERCHANGEABLE
COIL,RADIO FREQUENCY
3479966-5

Frequently Asked Questions

What is NSN 5985-00-249-1681?

NSN 5985-00-249-1681 is a Coupler,directional, manufactured by Alliant Techsystems Operations Llc Div Defense Electronic Systems, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-00-249-1681?

NSN 5985-00-249-1681 has 2 cross-referenced part numbers: 22690 (Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq), 2605379-20 (Alliant Techsystems Operations Llc Div Defense Electronic Systems).

What NSN replaces 5985-00-249-1681?

There are 5 known substitutes for 5985-00-249-1681: 5935-00-128-5999, 5330-00-291-0455, 5950-00-761-8878 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2605379-20?

Key specifications for 2605379-20: Power Loss in Decibels: 20.0; Overall Width: 1.500 INCHES NOMINAL IN; Unit Type: TRANSMISSION LINE; Identifying Number: TERMINAL FITTING N. 9 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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