PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4151-140Coupler,directional

Bird Electronic Corporation Div Bird Electronic Corp · NSN 5985-01-209-2165 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-01-209-2165 — this item is cataloged by the U.S. Government under National Stock Number 5985-01-209-2165. Primary manufacturer part number: 4151-140.
Features
  • Coupler,directional — FSC 5985
  • Design Type: BIDIRECTIONAL
  • Unit Type: COAXIAL LINE
  • Radio Frequency Rating: 108.0 MEGAHERTZ MINIMUM AND 118.0 MEGAHERTZ MAXIMUM
  • 3 verified cross-references
  • Primary manufacturer: Bird Electronic Corporation Div Bird Electronic Corp
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Coupler,directional, cataloged under National Stock Number 5985-01-209-2165, 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 Bird Electronic Corporation Div Bird Electronic Corp. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5985-01-209-2165
Primary Part Number4151-140
Item NameCoupler,directional
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerBird Electronic Corporation Div Bird Electronic Corp
StatusACTIVE
Design TypeBIDIRECTIONAL
Unit TypeCOAXIAL LINE
Radio Frequency Rating108.0 MEGAHERTZ MINIMUM AND 118.0 MEGAHERTZ MAXIMUM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
1270-00-757-6005408690 INTERCHANGEABLE
Resistor and Bracke
Raytheon Company Dba Raytheon
4820-01-320-8253408690 INTERCHANGEABLE
Seat,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
5910-01-396-5483408690 INTERCHANGEABLE
Capacitor,fixed,electrolytic
Fluke Corp
Cross-Reference Index
Part NumberManufacturer
408690 Cardion Inc (USA)
4151-140 PRIMARY Bird Electronic Corporation Div Bird Electronic Corp (USA)
408690 Aimtron Systems, Llc (USA)
Related Parts
1270-00-757-6005INTERCHANGEABLE
RESISTOR AND BRACKE
408690
4820-01-320-8253INTERCHANGEABLE
SEAT,VALVE
408690
5910-01-396-5483INTERCHANGEABLE
CAPACITOR,FIXED,ELECTROLYTIC
408690

Frequently Asked Questions

What is NSN 5985-01-209-2165?

NSN 5985-01-209-2165 is a Coupler,directional, manufactured by Bird Electronic Corporation Div Bird Electronic Corp, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-01-209-2165?

NSN 5985-01-209-2165 has 3 cross-referenced part numbers: 408690 (Cardion Inc), 4151-140 (Bird Electronic Corporation Div Bird Electronic Corp), 408690 (Aimtron Systems, Llc).

What NSN replaces 5985-01-209-2165?

There are 3 known substitutes for 5985-01-209-2165: 1270-00-757-6005, 4820-01-320-8253, 5910-01-396-5483. Verify interchangeability with system specifications before substitution.

What are the specifications of 4151-140?

Key specifications for 4151-140: Design Type: BIDIRECTIONAL; Overall Length: 3.700 INCHES NOMINAL IN; Overall Width: 1.780 INCHES NOMINAL IN; Unit Type: COAXIAL LINE. 6 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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