PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

601BAdapter,waveguide

Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq · NSN 5985-00-729-5374 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-729-5374 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-729-5374. Primary manufacturer part number: 601B.
Features
  • Adapter,waveguide — FSC 5985
  • Flange Outside Width: 1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM SINGLE FLANGE IN
  • Criticality Code Justification: FEAT
  • Flange Outside Height: 1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM SINGLE FLANGE IN
  • Flange Connecting Facility and Quantity: 4 THREADED HOLE(S) SINGLE FLANGE SINGLE CONNECTION FACILITY
  • FSC Application Data: RADAR EQUIPMENT
  • Flange Inside Diameter: 1.406 INCHES MINIMUM AND 1.437 INCHES MAXIMUM SINGLE FLANGE IN
  • Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT
Applications
  • Applications requiring Copper Alloy Single Tubing Segment and Flange construction
General Description

The Adapter,waveguide, cataloged under National Stock Number 5985-00-729-5374, 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 Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq. Government technical data includes 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5985-00-729-5374
Primary Part Number601B
Item NameAdapter,waveguide
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerNarda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq
StatusCANCELLED
Flange Outside Width1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM SINGLE FLANGE IN
Criticality Code JustificationFEAT
Flange Outside Height1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM SINGLE FLANGE IN
Flange Connecting Facility and Quantity4 THREADED HOLE(S) SINGLE FLANGE SINGLE CONNECTION FACILITY
FSC Application DataRADAR EQUIPMENT
Flange Inside Diameter1.406 INCHES MINIMUM AND 1.437 INCHES MAXIMUM SINGLE FLANGE IN
Tubing Wall Construction StyleSEAMLESS SINGLE TUBING SEGMENT
Style DesignatorWAVEGUIDE TO COAXIAL
Waveguide Inside Height0.396 INCHES MINIMUM AND 0.404 INCHES MAXIMUM IN
Waveguide Outside Height0.496 INCHES MINIMUM AND 0.504 INCHES MAXIMUM IN
Cross-Sectional Shape StyleINTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR
Flange StyleCHOKE TYPE SINGLE FLANGE
Voltage Standing Wave Ratio1.30
Thread DirectionRIGHT-HAND SINGLE FLANGE SINGLE CONNECTION FACILITY
Flange Inside Height0.396 INCHES MINIMUM AND 0.404 INCHES MAXIMUM SINGLE FLANGE IN
Flange Inside Width0.896 INCHES MINIMUM AND 0.904 INCHES MAXIMUM SINGLE FLANGE IN
Adapter Length1.531 INCHES MINIMUM AND 1.561 INCHES MAXIMUM IN
Flange Quantity1
Nominal Thread Size0.164 INCHES SINGLE FLANGE SINGLE CONNECTION FACILITY IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE FLANGE SINGLE CONNECTION FACILITY
Adapter Height1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM IN
MaterialCOPPER ALLOY SINGLE TUBING SEGMENT AND FLANGE
Thread Class2B SINGLE FLANGE SINGLE CONNECTION FACILITY
Flange Depth0.423 INCHES MINIMUM AND 0.453 INCHES MAXIMUM SINGLE FLANGE IN
Adapter Overall Width1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM IN
Adapter Overall Height2.312 INCHES MINIMUM AND 2.342 INCHES MAXIMUM IN
Waveguide Inside Width0.896 INCHES MINIMUM AND 0.904 INCHES MAXIMUM IN
Waveguide Outside Width0.996 INCHES MINIMUM AND 1.004 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
2925-00-137-12007528 INTERCHANGEABLE
Link
Te Connectivity Corporation
5945-00-243-9170 INTERCHANGEABLE
Relay,thermal
3120-00-339-43483374626 INTERCHANGEABLE
Bearing,sleeve
Eaton Corporation Dba Airflex Div Div Airflex
4820-00-538-6884RD-5-3 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Mid-State Sales, Inc. Div Defense Products Group
6625-00-600-4147601B INTERCHANGEABLE
Pressure Sensor
Honeywell International Inc. Dba Honeywell Div Aerospace ? Redmond Commercial
4030-00-807-4107 INTERCHANGEABLE
Anchor,guy
6135-01-031-0862C18.1M-910A INTERCHANGEABLE
Battery,nonrechargeable
American National Standards Institute Incorporated Dba American National Standards Institute
5325-01-301-05077528 INTERCHANGEABLE
Ring,retaining
Trelleborg Sealing Solutions Us, Inc.
4710-01-343-818732-2538 INTERCHANGEABLE
Vessel,desalination
Parker Hannifin Corporation Div Village Marine Tech
5310-01-492-25347528 INTERCHANGEABLE
Nut,plain,hexagon
Triumph Controls, Llc Dba Triumph Controls, Llc
Cross-Reference Index
Part NumberManufacturer
3000-4XXX-00 Semic Rf Electronic Gmbh (DEU)
3000-4XXX-00 Cobham Advanced Electronic Solutions Inc. (USA)
2921781-2 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
2921781 Astro Microwave Inc (USA)
7528 Microwave Filter Co Inc (USA)
7441707P2 General Dynamics Defense Systems Inc. Dba General Dynamics Advanced Information Systems (USA)
6011704-001 Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc (USA)
90-601B Advanced Technical Materials, Inc. Dba a T M (USA)
601B PRIMARY Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq (USA)
7047621P87 Lockheed Martin Corporation Div Rms (USA)
Related Parts
2925-00-137-1200INTERCHANGEABLE
LINK
7528
5945-00-243-9170INTERCHANGEABLE
RELAY,THERMAL
3120-00-339-4348INTERCHANGEABLE
BEARING,SLEEVE
3374626
4820-00-538-6884INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
RD-5-3
6625-00-600-4147INTERCHANGEABLE
PRESSURE SENSOR
601B
4030-00-807-4107INTERCHANGEABLE
ANCHOR,GUY
6135-01-031-0862INTERCHANGEABLE
BATTERY,NONRECHARGEABLE
C18.1M-910A
5325-01-301-0507INTERCHANGEABLE
RING,RETAINING
7528
4710-01-343-8187INTERCHANGEABLE
VESSEL,DESALINATION
32-2538
5310-01-492-2534INTERCHANGEABLE
NUT,PLAIN,HEXAGON
7528
5998-01-496-8823INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
4920-01-573-6278INTERCHANGEABLE
FLAP,AIRCRAFT,MATER
7528

Frequently Asked Questions

What is NSN 5985-00-729-5374?

NSN 5985-00-729-5374 is a Adapter,waveguide, manufactured by Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq, classified under FSC 5985 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5985-00-729-5374?

NSN 5985-00-729-5374 has 10 cross-referenced part numbers: 3000-4XXX-00 (Semic Rf Electronic Gmbh), 3000-4XXX-00 (Cobham Advanced Electronic Solutions Inc.), 2921781-2 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 2921781 (Astro Microwave Inc), 7528 (Microwave Filter Co Inc) and 5 more.

What NSN replaces 5985-00-729-5374?

There are 12 known substitutes for 5985-00-729-5374: 2925-00-137-1200, 5945-00-243-9170, 3120-00-339-4348 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 601B?

Key specifications for 601B: Flange Outside Width: 1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM SINGLE FLANGE IN; Criticality Code Justification: FEAT; Flange Outside Height: 1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM SINGLE FLANGE IN; Flange Connecting Facility and Quantity: 4 THREADED HOLE(S) SINGLE FLANGE SINGLE CONNECTION FACILITY. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5985-00-729-5374 still in active supply?

NSN 5985-00-729-5374 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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