PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

174AS570Coupler,directional

Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier · NSN 5985-01-136-0949 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-01-136-0949 — this item is cataloged by the U.S. Government under National Stock Number 5985-01-136-0949. Primary manufacturer part number: 174AS570.
Features
  • Coupler,directional — FSC 5985
  • Design Type: BIDIRECTIONAL
  • Unpackaged Unit Weight: 8.000 OUNCES NOMINAL OZ
  • FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT
  • Power Loss in Decibels: 16.0
  • Radio Frequency Rating: 0.5 GIGAHERTZ MINIMUM AND 18.0 GIGAHERTZ MAXIMUM
  • Unit Type: TRANSMISSION LINE
  • 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 5985-01-136-0949, 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 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5985-01-136-0949
Primary Part Number174AS570
Item NameCoupler,directional
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerNaval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
StatusACTIVE
Design TypeBIDIRECTIONAL
Unpackaged Unit Weight8.000 OUNCES NOMINAL OZ
FSC Application DataANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT
Power Loss in Decibels16.0
Radio Frequency Rating0.5 GIGAHERTZ MINIMUM AND 18.0 GIGAHERTZ MAXIMUM
Unit TypeTRANSMISSION LINE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5331-00-291-7353 INTERCHANGEABLE
O-Ring
5305-00-991-5865610074 PC 14 INTERCHANGEABLE
Screw,externally Relieved Body
Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
6670-01-294-906624978 INTERCHANGEABLE
Weight,balance
Kurz & Root Generator Company, Llc
5950-01-468-422224978 INTERCHANGEABLE
Transformer,power
Power Paragon, Inc. Dba Power Magnetics Div Power Magnetics
Cross-Reference Index
Part NumberManufacturer
24978 Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq (USA)
174AS570 PRIMARY Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
Related Parts
5331-00-291-7353INTERCHANGEABLE
O-RING
5305-00-991-5865INTERCHANGEABLE
SCREW,EXTERNALLY RELIEVED BODY
610074 PC 14
6670-01-294-9066INTERCHANGEABLE
WEIGHT,BALANCE
24978
5950-01-468-4222INTERCHANGEABLE
TRANSFORMER,POWER
24978

Frequently Asked Questions

What is NSN 5985-01-136-0949?

NSN 5985-01-136-0949 is a Coupler,directional, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-01-136-0949?

NSN 5985-01-136-0949 has 2 cross-referenced part numbers: 24978 (Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq), 174AS570 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).

What NSN replaces 5985-01-136-0949?

There are 4 known substitutes for 5985-01-136-0949: 5331-00-291-7353, 5305-00-991-5865, 6670-01-294-9066 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 174AS570?

Key specifications for 174AS570: Design Type: BIDIRECTIONAL; Unpackaged Unit Weight: 8.000 OUNCES NOMINAL OZ; FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT; Power Loss in Decibels: 16.0. 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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