PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

116781-2Waveguide Assembly

L3harris Technologies, Inc Div Space & Airborne Systems · NSN 5985-00-688-7090 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-688-7090 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-688-7090. Primary manufacturer part number: 116781-2.
Features
  • Waveguide Assembly — FSC 5985
  • Tubing Wall Construction Style: NULL-POINT SEAM SINGLE TUBING SEGMENT
  • Waveguide Inside Height: 0.497 INCHES NOMINAL IN
  • Flange Quantity: 2
  • Surface Treatment: SILVER SINGLE TUBING SEGMENT OUTSIDE SURFACES
  • Precious Material and Location: TUBING SEGMENT SURFACE SILVER
  • Waveguide Length: 1.500 FEET NOMINAL FT
  • Precious Material: SILVER
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Waveguide Assembly, cataloged under National Stock Number 5985-00-688-7090, 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 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5985-00-688-7090
Primary Part Number116781-2
Item NameWaveguide Assembly
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerL3harris Technologies, Inc Div Space & Airborne Systems
StatusACTIVE
Tubing Wall Construction StyleNULL-POINT SEAM SINGLE TUBING SEGMENT
Waveguide Inside Height0.497 INCHES NOMINAL IN
Flange Quantity2
Surface TreatmentSILVER SINGLE TUBING SEGMENT OUTSIDE SURFACES
Precious Material and LocationTUBING SEGMENT SURFACE SILVER
Waveguide Length1.500 FEET NOMINAL FT
Precious MaterialSILVER
FlexibilityFLEXIBLE SINGLE TUBING SEGMENT
Waveguide Inside Width1.122 INCHES NOMINAL IN
Style DesignatorSTRAIGHT TYPE
Waveguide Outside Width1.250 INCHES NOMINAL IN
Cross-Sectional Shape StyleINTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR
Waveguide Outside Height0.625 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
4820-00-554-7634 INTERCHANGEABLE
Valve,shuttle
1650-00-612-857820350-1 INTERCHANGEABLE
Cylinder Assembly,actuating,line
Danfoss Power Solutions II, Llc
6695-01-106-9134086-111-0088 INTERCHANGEABLE
Transducer,motional Pickup
Ai-Tek Instruments Llc Dba Ai-Tek Instruments Llc
2990-01-109-81553040AN INTERCHANGEABLE
Magnetic Sensor
Honeywell International Inc. Dba Honeywell Div Honeywell Sensing and Control
2805-01-214-1236221432-2035-01 INTERCHANGEABLE
Engine,gasoline
Buckeye Power Sales Co Inc Div Generator Division
5315-01-353-6728203501 INTERCHANGEABLE
Pin,straight,headless
Imt Partnership Dba Imt Defence
Cross-Reference Index
Part NumberManufacturer
116781-2 Astro Microwave Inc (USA)
203501-3 Microtech Inc Dba Microtech Inc (USA)
203501 Microtech Inc Dba Microtech Inc (USA)
116781-2 PRIMARY L3harris Technologies, Inc Div Space & Airborne Systems (USA)
AD0907886 J L M Electronics Inc Dba Pack Rite Company (USA)
Related Parts
4820-00-554-7634INTERCHANGEABLE
VALVE,SHUTTLE
1650-00-612-8578INTERCHANGEABLE
CYLINDER ASSEMBLY,ACTUATING,LINE
20350-1
6695-01-106-9134INTERCHANGEABLE
TRANSDUCER,MOTIONAL PICKUP
086-111-0088
2990-01-109-8155INTERCHANGEABLE
MAGNETIC SENSOR
3040AN
2805-01-214-1236INTERCHANGEABLE
ENGINE,GASOLINE
221432-2035-01
5315-01-353-6728INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
203501

Frequently Asked Questions

What is NSN 5985-00-688-7090?

NSN 5985-00-688-7090 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 5985-00-688-7090?

NSN 5985-00-688-7090 has 5 cross-referenced part numbers: 116781-2 (Astro Microwave Inc), 203501-3 (Microtech Inc Dba Microtech Inc), 203501 (Microtech Inc Dba Microtech Inc), 116781-2 (L3harris Technologies, Inc Div Space & Airborne Systems), AD0907886 (J L M Electronics Inc Dba Pack Rite Company).

What NSN replaces 5985-00-688-7090?

There are 6 known substitutes for 5985-00-688-7090: 4820-00-554-7634, 1650-00-612-8578, 6695-01-106-9134 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 116781-2?

Key specifications for 116781-2: Tubing Wall Construction Style: NULL-POINT SEAM SINGLE TUBING SEGMENT; Waveguide Inside Height: 0.497 INCHES NOMINAL IN; Flange Quantity: 2; Surface Treatment: SILVER SINGLE TUBING SEGMENT OUTSIDE SURFACES. 13 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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