PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

76456Waveguide Assembly

L3harris Technologies, Inc Div Space & Airborne Systems · NSN 5985-00-571-5165 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-571-5165 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-571-5165. Primary manufacturer part number: 76456.
Features
  • Waveguide Assembly — FSC 5985
  • Flange Quantity: 2
  • Cross-Sectional Shape Style: INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR
  • Flange Connecting Facility and Quantity: 4 THREADED HOLE(S) FIRST FLANGE SINGLE CONNECTION FACILITY
  • Waveguide Height: 4.624 INCHES NOMINAL IN
  • Style Designator: U-BEND TYPE
  • Waveguide Outside Height: 0.625 INCHES NOMINAL IN
  • Waveguide Longer Leg Length: 5.813 INCHES NOMINAL IN
Applications
  • Applications requiring Aluminum Alloy All Flange construction
General Description

The Waveguide Assembly, cataloged under National Stock Number 5985-00-571-5165, 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 L3harris Technologies, Inc Div Space & Airborne Systems. Government technical data includes 23 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
NSN5985-00-571-5165
Primary Part Number76456
Item NameWaveguide Assembly
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerL3harris Technologies, Inc Div Space & Airborne Systems
StatusACTIVE
Flange Quantity2
Cross-Sectional Shape StyleINTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR
Flange Connecting Facility and Quantity4 THREADED HOLE(S) FIRST FLANGE SINGLE CONNECTION FACILITY
Waveguide Height4.624 INCHES NOMINAL IN
Style DesignatorU-BEND TYPE
Waveguide Outside Height0.625 INCHES NOMINAL IN
Waveguide Longer Leg Length5.813 INCHES NOMINAL IN
Flange StyleCHOKE TYPE FIRST FLANGE
Flange Inside Height0.634 INCHES NOMINAL SECOND FLANGE IN
Waveguide Leg Length2.999 INCHES NOMINAL IN
Flange Inside Width1.258 INCHES NOMINAL SECOND FLANGE IN
Flange Depth0.906 INCHES NOMINAL SECOND FLANGE IN
Flange Connecting Facility and Quantity2 UNTHREADED HOLE(S) SECOND FLANGE SINGLE CONNECTION FACILITY
Waveguide Outside Width1.250 INCHES NOMINAL IN
Flange Inside Width1.122 INCHES NOMINAL FIRST FLANGE IN
Flange StyleCOVER TYPE SECOND FLANGE
Flange Depth0.625 INCHES NOMINAL FIRST FLANGE IN
Waveguide Inside Width1.122 INCHES NOMINAL IN
Waveguide Inside Height0.497 INCHES NOMINAL IN
Flange Inside Height0.497 INCHES NOMINAL FIRST FLANGE IN
Waveguide Center to Center Distance3.250 INCHES NOMINAL IN
FSC Application DataRADAR EQUIPMENT,EXCEPT AIRBORNE
MaterialALUMINUM ALLOY ALL FLANGE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
8030-00-980-3975 INTERCHANGEABLE
Primer,sealing Compound
5365-01-076-874876456 INTERCHANGEABLE
Spacer,sleeve
Cae Usa Inc.
5365-01-163-698276456 INTERCHANGEABLE
Spacer,plate
Triumph Engine Control Systems Llc
5325-01-258-1528764-5-6 INTERCHANGEABLE
Ring,retaining
Flowserve Corporation Div Flowserve Us Inc
5305-01-345-0072 INTERCHANGEABLE
Setscrew
Cross-Reference Index
Part NumberManufacturer
76456 PRIMARY L3harris Technologies, Inc Div Space & Airborne Systems (USA)
76456 3dbm Co Inc Waveguide Group (USA)
Related Parts
8030-00-980-3975INTERCHANGEABLE
PRIMER,SEALING COMPOUND
5365-01-076-8748INTERCHANGEABLE
SPACER,SLEEVE
76456
5365-01-163-6982INTERCHANGEABLE
SPACER,PLATE
76456
5325-01-258-1528INTERCHANGEABLE
RING,RETAINING
764-5-6
5305-01-345-0072INTERCHANGEABLE
SETSCREW

Frequently Asked Questions

What is NSN 5985-00-571-5165?

NSN 5985-00-571-5165 is a Waveguide Assembly, manufactured by L3harris Technologies, Inc Div Space & Airborne Systems, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-00-571-5165?

NSN 5985-00-571-5165 has 2 cross-referenced part numbers: 76456 (L3harris Technologies, Inc Div Space & Airborne Systems), 76456 (3dbm Co Inc Waveguide Group).

What NSN replaces 5985-00-571-5165?

There are 5 known substitutes for 5985-00-571-5165: 8030-00-980-3975, 5365-01-076-8748, 5365-01-163-6982 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 76456?

Key specifications for 76456: Flange Quantity: 2; Cross-Sectional Shape Style: INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR; Flange Connecting Facility and Quantity: 4 THREADED HOLE(S) FIRST FLANGE SINGLE CONNECTION FACILITY; Waveguide Height: 4.624 INCHES NOMINAL IN. 23 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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