PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

127723Waveguide Assembly

L3harris Technologies, Inc Div Space & Airborne Systems · NSN 5985-00-884-6727 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-884-6727 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-884-6727. Primary manufacturer part number: 127723.
Features
  • Waveguide Assembly — FSC 5985
  • Flange Inside Width: 1.122 INCHES NOMINAL FIRST FLANGE IN
  • Flange Depth: 0.625 INCHES NOMINAL FIRST FLANGE IN
  • Waveguide Inside Width: 1.122 INCHES NOMINAL IN
  • Flange Outside Height: 1.875 INCHES NOMINAL FIRST FLANGE IN
  • Flange Connecting Facility and Quantity: 4 UNTHREADED HOLE(S) SECOND FLANGE SINGLE CONNECTION FACILITY
  • Waveguide Outside Width: 1.250 INCHES NOMINAL IN
  • Material: ALUMINUM ALL FLANGE
Applications
  • Applications requiring Aluminum All Flange construction
General Description

The Waveguide Assembly, cataloged under National Stock Number 5985-00-884-6727, 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 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 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
NSN5985-00-884-6727
Primary Part Number127723
Item NameWaveguide Assembly
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerL3harris Technologies, Inc Div Space & Airborne Systems
StatusACTIVE
Flange Inside Width1.122 INCHES NOMINAL FIRST FLANGE IN
Flange Depth0.625 INCHES NOMINAL FIRST FLANGE IN
Waveguide Inside Width1.122 INCHES NOMINAL IN
Flange Outside Height1.875 INCHES NOMINAL FIRST FLANGE IN
Flange Connecting Facility and Quantity4 UNTHREADED HOLE(S) SECOND FLANGE SINGLE CONNECTION FACILITY
Waveguide Outside Width1.250 INCHES NOMINAL IN
MaterialALUMINUM ALL FLANGE
Flange Depth0.625 INCHES NOMINAL SECOND FLANGE IN
Flange Outside Height1.875 INCHES NOMINAL SECOND FLANGE IN
Flange Outside Width1.875 INCHES NOMINAL FIRST FLANGE IN
Waveguide Outside Height0.625 INCHES NOMINAL IN
Flange Outside Width1.875 INCHES NOMINAL SECOND FLANGE IN
Flange Inside Height0.497 INCHES NOMINAL FIRST FLANGE IN
FSC Application DataMULTIAPPLICATION
Flange StyleCOVER TYPE SECOND FLANGE
Thread Class2B FIRST FLANGE SINGLE CONNECTION FACILITY
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) FIRST FLANGE SINGLE CONNECTION FACILITY
Thread DirectionRIGHT-HAND FIRST FLANGE SINGLE CONNECTION FACILITY
Bend Angle in Deg90.0 SINGLE BEND E-PLANE
Flange Connecting Hole Diameter0.169 INCHES NOMINAL SECOND FLANGE SINGLE CONNECTION FACILITY IN
Waveguide Inside Height0.497 INCHES NOMINAL IN
Nominal Thread Size0.164 INCHES FIRST FLANGE SINGLE CONNECTION FACILITY IN
Waveguide Longer Offset Distance2.000 INCHES NOMINAL IN
Tubing Wall Construction StyleSEAMLESS SINGLE TUBING SEGMENT
FlexibilityRIGID SINGLE TUBING SEGMENT
Waveguide Offset Distance2.000 INCHES NOMINAL IN
Flange StyleCHOKE TYPE FIRST FLANGE
Surface TreatmentENAMEL ALL FLANGE OUTSIDE SURFACES
Style DesignatorBEND TYPE
Cross-Sectional Shape StyleINTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5310-00-185-6375 INTERCHANGEABLE
Nut,plain,round
5905-00-279-201812772-3 INTERCHANGEABLE
Variable Resistor
Electric Regulator Corp
4720-01-498-6348 INTERCHANGEABLE
Hose Assy,pao
Cross-Reference Index
Part NumberManufacturer
127723 Microwave Engineering Corporation (USA)
127723 PRIMARY L3harris Technologies, Inc Div Space & Airborne Systems (USA)
127723 Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc (USA)
127723 Rantec Microwave Systems, Inc Dba Rantec Microwave Systems, Inc (USA)
127723 Microtech Inc Dba Microtech Inc (USA)
Related Parts
5310-00-185-6375INTERCHANGEABLE
NUT,PLAIN,ROUND
5905-00-279-2018INTERCHANGEABLE
VARIABLE RESISTOR
12772-3
4720-01-498-6348INTERCHANGEABLE
HOSE ASSY,PAO

Frequently Asked Questions

What is NSN 5985-00-884-6727?

NSN 5985-00-884-6727 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 5985-00-884-6727?

NSN 5985-00-884-6727 has 5 cross-referenced part numbers: 127723 (Microwave Engineering Corporation), 127723 (L3harris Technologies, Inc Div Space & Airborne Systems), 127723 (Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc), 127723 (Rantec Microwave Systems, Inc Dba Rantec Microwave Systems, Inc), 127723 (Microtech Inc Dba Microtech Inc).

What NSN replaces 5985-00-884-6727?

There are 3 known substitutes for 5985-00-884-6727: 5310-00-185-6375, 5905-00-279-2018, 4720-01-498-6348. Verify interchangeability with system specifications before substitution.

What are the specifications of 127723?

Key specifications for 127723: Flange Inside Width: 1.122 INCHES NOMINAL FIRST FLANGE IN; Flange Depth: 0.625 INCHES NOMINAL FIRST FLANGE IN; Waveguide Inside Width: 1.122 INCHES NOMINAL IN; Flange Outside Height: 1.875 INCHES NOMINAL FIRST FLANGE IN. 30 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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