PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

73643Waveguide Assembly

L3harris Technologies, Inc Div Space & Airborne Systems · NSN 5985-00-076-7358 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-076-7358 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-076-7358. Primary manufacturer part number: 73643.
Features
  • Waveguide Assembly — FSC 5985
  • Waveguide Height: 2.125 INCHES NOMINAL IN
  • Flange Depth: 0.423 INCHES MINIMUM AND 0.453 INCHES MAXIMUM FIRST FLANGE IN
  • Cross-Sectional Shape Style: INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR
  • Waveguide Outside Height: 0.621 INCHES MINIMUM AND 0.629 INCHES MAXIMUM IN
  • Flange Quantity: 2
  • Flange Connecting Hole Diameter: 0.169 INCHES MINIMUM AND 0.172 INCHES MAXIMUM FIRST FLANGE ALL CONNECTION FACILITIES IN
  • Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT
Applications
  • Applications requiring Copper Alloy All Tubing Segment and Flange construction
General Description

The Waveguide Assembly, cataloged under National Stock Number 5985-00-076-7358, 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 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5985-00-076-7358
Primary Part Number73643
Item NameWaveguide Assembly
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerL3harris Technologies, Inc Div Space & Airborne Systems
StatusACTIVE
Waveguide Height2.125 INCHES NOMINAL IN
Flange Depth0.423 INCHES MINIMUM AND 0.453 INCHES MAXIMUM FIRST FLANGE IN
Cross-Sectional Shape StyleINTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR
Waveguide Outside Height0.621 INCHES MINIMUM AND 0.629 INCHES MAXIMUM IN
Flange Quantity2
Flange Connecting Hole Diameter0.169 INCHES MINIMUM AND 0.172 INCHES MAXIMUM FIRST FLANGE ALL CONNECTION FACILITIES IN
Tubing Wall Construction StyleSEAMLESS SINGLE TUBING SEGMENT
MaterialCOPPER ALLOY ALL TUBING SEGMENT AND FLANGE
Flange StyleCOVER TYPE FIRST FLANGE
Flange Inside Width1.253 INCHES MINIMUM AND 1.256 INCHES MAXIMUM FIRST FLANGE IN
Waveguide Outside Width1.246 INCHES MINIMUM AND 1.254 INCHES MAXIMUM IN
FlexibilityRIGID SINGLE TUBING SEGMENT
Flange Outside Height1.860 INCHES MINIMUM AND 1.890 INCHES MAXIMUM FIRST FLANGE IN
Flange Inside Height0.628 INCHES MINIMUM AND 0.631 INCHES MAXIMUM FIRST FLANGE IN
Bend Angle in Deg90.0 ALL BENDS E-PLANE
Waveguide Inside Height0.493 INCHES MINIMUM AND 0.501 INCHES MAXIMUM IN
Waveguide Inside Width1.118 INCHES MINIMUM AND 1.126 INCHES MAXIMUM IN
FSC Application DataANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT
Flange Outside Width1.860 INCHES MINIMUM AND 1.890 INCHES MAXIMUM FIRST FLANGE IN
Style DesignatorDOUBLE BEND TYPE
Flange Connecting Facility and Quantity4 UNTHREADED HOLE(S) FIRST FLANGE ALL CONNECTION FACILITIES
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5305-00-359-1845330K809 INTERCHANGEABLE
Setscrew
Hyster-Yale Group, Inc. Dba Yale Materials Handling
Cross-Reference Index
Part NumberManufacturer
73643 PRIMARY L3harris Technologies, Inc Div Space & Airborne Systems (USA)
Related Parts
5305-00-359-1845INTERCHANGEABLE
SETSCREW
330K809

Frequently Asked Questions

What is NSN 5985-00-076-7358?

NSN 5985-00-076-7358 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 5985-00-076-7358?

NSN 5985-00-076-7358 has 1 cross-referenced part number: 73643 (L3harris Technologies, Inc Div Space & Airborne Systems).

What NSN replaces 5985-00-076-7358?

There is 1 known substitute for 5985-00-076-7358: 5305-00-359-1845. Verify interchangeability with system specifications before substitution.

What are the specifications of 73643?

Key specifications for 73643: Waveguide Height: 2.125 INCHES NOMINAL IN; Flange Depth: 0.423 INCHES MINIMUM AND 0.453 INCHES MAXIMUM FIRST FLANGE IN; Cross-Sectional Shape Style: INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR; Waveguide Outside Height: 0.621 INCHES MINIMUM AND 0.629 INCHES MAXIMUM IN. 21 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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