PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5176459Adapter,waveguide

Naval Sea Systems Command · NSN 5985-01-123-4300 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-01-123-4300 — this item is cataloged by the U.S. Government under National Stock Number 5985-01-123-4300. Primary manufacturer part number: 5176459.
Features
  • Adapter,waveguide — FSC 5985
  • Operating Pressure: 10.0 POUNDS PER SQUARE INCH GAUGE (PSIG) MAXIMUM LBS
  • Adapter Overall Width: 1.625 INCHES NOMINAL IN
  • Flange Depth: 0.438 INCHES NOMINAL SINGLE FLANGE IN
  • Adapter Height: 1.625 INCHES NOMINAL IN
  • Waveguide Outside Height: 0.500 INCHES NOMINAL IN
  • Voltage Standing Wave Ratio: 1.15
  • Flange Outside Width: 1.625 INCHES NOMINAL SINGLE FLANGE IN
Applications
  • Applications requiring Copper Alloy All Tubing Segment and Flange construction
General Description

The Adapter,waveguide, cataloged under National Stock Number 5985-01-123-4300, 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 Sea Systems Command. Government technical data includes 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 7 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
NSN5985-01-123-4300
Primary Part Number5176459
Item NameAdapter,waveguide
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerNaval Sea Systems Command
StatusACTIVE
Operating Pressure10.0 POUNDS PER SQUARE INCH GAUGE (PSIG) MAXIMUM LBS
Adapter Overall Width1.625 INCHES NOMINAL IN
Flange Depth0.438 INCHES NOMINAL SINGLE FLANGE IN
Adapter Height1.625 INCHES NOMINAL IN
Waveguide Outside Height0.500 INCHES NOMINAL IN
Voltage Standing Wave Ratio1.15
Flange Outside Width1.625 INCHES NOMINAL SINGLE FLANGE IN
Flange Outside Height1.625 INCHES NOMINAL SINGLE FLANGE IN
Flange Quantity1
Insertion Loss in Decibels0.10
Adapter Length1.002 INCHES MAXIMUM IN
FSC Application DataANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT
Surface TreatmentPAINT ALL TUBING SEGMENT AND FLANGE OUTSIDE SURFACES
Adapter Overall Height1.910 INCHES MAXIMUM IN
Waveguide Inside Width0.900 INCHES NOMINAL IN
Waveguide Inside Height0.400 INCHES NOMINAL IN
Waveguide Outside Width1.000 INCHES NOMINAL IN
MaterialCOPPER ALLOY ALL TUBING SEGMENT AND FLANGE
Style DesignatorWAVEGUIDE TO COAXIAL
Flange Inside Height0.505 INCHES NOMINAL SINGLE FLANGE IN
Coaxial Connector Series DesignationN
Connector End DesignFEMALE
Flange Inside Width1.005 INCHES NOMINAL SINGLE FLANGE IN
Tubing Wall Construction StyleSEAMLESS SINGLE TUBING SEGMENT
Flange Connecting Hole Diameter0.169 INCHES NOMINAL SINGLE FLANGE ALL CONNECTION FACILITIES IN
Cross-Sectional Shape StyleINTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR
Flange StyleCOVER TYPE SINGLE FLANGE
Flange Connecting Facility and Quantity4 UNTHREADED HOLE(S) SINGLE FLANGE ALL CONNECTION FACILITIES
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4810-00-177-834510921563 INTERCHANGEABLE
Valve,solenoid
Army, United States Department of the Dba Rock Island Arsenal Jmtc
4730-00-336-62786145 INTERCHANGEABLE
Strainer,suction
Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.
5411-01-700-90973023-008172 INTERCHANGEABLE
Curtain,vent,shelter
Berg Manufacturing, Inc.
Cross-Reference Index
Part NumberManufacturer
1692-A00 Atlantic Microwave Corporation Div Cobham Electronic Systems (USA)
90AC689 Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc (USA)
5176459 PRIMARY Naval Sea Systems Command (USA)
1204278 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
61451 Waveline Inc (USA)
1204278 Lockheed Martin Corporation Div Rms (USA)
1692-A00 Axillon Aerospace (baltimore) Inc. (USA)
Related Parts
4810-00-177-8345INTERCHANGEABLE
VALVE,SOLENOID
10921563
4730-00-336-6278INTERCHANGEABLE
STRAINER,SUCTION
6145
5411-01-700-9097INTERCHANGEABLE
CURTAIN,VENT,SHELTER
3023-008172

Frequently Asked Questions

What is NSN 5985-01-123-4300?

NSN 5985-01-123-4300 is a Adapter,waveguide, manufactured by Naval Sea Systems Command, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-01-123-4300?

NSN 5985-01-123-4300 has 7 cross-referenced part numbers: 1692-A00 (Atlantic Microwave Corporation Div Cobham Electronic Systems), 90AC689 (Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc), 5176459 (Naval Sea Systems Command), 1204278 (Lockheed Martin Corporation Div Rms - Mitchel Field), 61451 (Waveline Inc) and 2 more.

What NSN replaces 5985-01-123-4300?

There are 3 known substitutes for 5985-01-123-4300: 4810-00-177-8345, 4730-00-336-6278, 5411-01-700-9097. Verify interchangeability with system specifications before substitution.

What are the specifications of 5176459?

Key specifications for 5176459: Operating Pressure: 10.0 POUNDS PER SQUARE INCH GAUGE (PSIG) MAXIMUM LBS; Adapter Overall Width: 1.625 INCHES NOMINAL IN; Flange Depth: 0.438 INCHES NOMINAL SINGLE FLANGE IN; Adapter Height: 1.625 INCHES NOMINAL IN. 28 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com