PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

223977Waveguide Assembly

Microtech Inc Dba Microtech Inc · NSN 5985-00-996-9816 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-996-9816 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-996-9816. Primary manufacturer part number: 223977.
Features
  • Waveguide Assembly — FSC 5985
  • Waveguide Outside Width: 0.996 INCHES MINIMUM AND 1.004 INCHES MAXIMUM IN
  • Nominal Thread Size: 0.164 INCHES FIRST FLANGE ALL CONNECTION FACILITIES IN
  • Thread Quantity Per Inch: 32 FIRST FLANGE ALL CONNECTION FACILITIES
  • Thread Direction: RIGHT-HAND FIRST FLANGE ALL CONNECTION FACILITIES
  • Flange Outside Height: 1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM FIRST FLANGE IN
  • Flange Inside Height: 0.503 INCHES MINIMUM SECOND FLANGE IN
  • Flange Inside Width: 0.896 INCHES MINIMUM AND 0.904 INCHES MAXIMUM FIRST FLANGE IN
Applications
  • Applications requiring Copper Alloy Single Tubing Segment construction
General Description

The Waveguide Assembly, cataloged under National Stock Number 5985-00-996-9816, 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 Microtech Inc Dba Microtech Inc. Government technical data includes 29 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5985-00-996-9816
Primary Part Number223977
Item NameWaveguide Assembly
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerMicrotech Inc Dba Microtech Inc
StatusACTIVE
Waveguide Outside Width0.996 INCHES MINIMUM AND 1.004 INCHES MAXIMUM IN
Nominal Thread Size0.164 INCHES FIRST FLANGE ALL CONNECTION FACILITIES IN
Thread Quantity Per Inch32 FIRST FLANGE ALL CONNECTION FACILITIES
Thread DirectionRIGHT-HAND FIRST FLANGE ALL CONNECTION FACILITIES
Flange Outside Height1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM FIRST FLANGE IN
Flange Inside Height0.503 INCHES MINIMUM SECOND FLANGE IN
Flange Inside Width0.896 INCHES MINIMUM AND 0.904 INCHES MAXIMUM FIRST FLANGE IN
Flange Depth0.423 INCHES MINIMUM AND 0.453 INCHES MAXIMUM FIRST FLANGE IN
Flange Connecting Facility and Quantity4 THREADED HOLE(S) FIRST FLANGE ALL CONNECTION FACILITIES
Flange Outside Width1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM SECOND FLANGE IN
Flange Outside Width1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM FIRST FLANGE IN
Voltage Standing Wave Ratio1.05
Tubing Wall Construction StyleSEAMLESS SINGLE TUBING SEGMENT
Thread Class2B FIRST FLANGE ALL CONNECTION FACILITIES
Flange Inside Diameter1.407 INCHES MINIMUM AND 1.437 INCHES MAXIMUM FIRST FLANGE IN
Flange Inside Height0.396 INCHES MINIMUM AND 0.404 INCHES MAXIMUM FIRST FLANGE IN
Flange Outside Height1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM SECOND FLANGE IN
Flange Depth0.423 INCHES MINIMUM AND 0.453 INCHES MAXIMUM SECOND FLANGE IN
Insertion Loss in Decibels0.10
Surface TreatmentSILVER AND PLASTIC VINYL SINGLE TUBING SEGMENT OUTSIDE SURFACES
Flange Quantity2
Flange Inside Width1.003 INCHES MINIMUM SECOND FLANGE IN
Flange Connecting Hole Diameter0.169 INCHES MINIMUM SECOND FLANGE ALL CONNECTION FACILITIES IN
Precious MaterialSILVER
FlexibilityFLEXIBLE SINGLE TUBING SEGMENT
Flange StyleCOVER TYPE SECOND FLANGE
Flange StyleCHOKE TYPE FIRST FLANGE
MaterialCOPPER ALLOY SINGLE TUBING SEGMENT
Waveguide Offset Distance2.615 INCHES MINIMUM AND 2.635 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
3040-00-348-8735223977 INTERCHANGEABLE
Shaft,counter Balan
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
6220-00-841-9321 INTERCHANGEABLE
Stop Light-Taillight,vehicular
Cross-Reference Index
Part NumberManufacturer
113832 Litton Systems Inc Airtron Div (USA)
223977 PRIMARY Microtech Inc Dba Microtech Inc (USA)
113832 PRIMARY Frontgrade Technologies Inc. (USA)
10548536 Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA)
283977 Microtech Inc Dba Microtech Inc (USA)
Related Parts
3040-00-348-8735INTERCHANGEABLE
SHAFT,COUNTER BALAN
223977
6220-00-841-9321INTERCHANGEABLE
STOP LIGHT-TAILLIGHT,VEHICULAR

Frequently Asked Questions

What is NSN 5985-00-996-9816?

NSN 5985-00-996-9816 is a Waveguide Assembly, manufactured by Microtech Inc Dba Microtech Inc, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-00-996-9816?

NSN 5985-00-996-9816 has 5 cross-referenced part numbers: 113832 (Litton Systems Inc Airtron Div), 223977 (Microtech Inc Dba Microtech Inc), 113832 (Frontgrade Technologies Inc.), 10548536 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate), 283977 (Microtech Inc Dba Microtech Inc).

What NSN replaces 5985-00-996-9816?

There are 2 known substitutes for 5985-00-996-9816: 3040-00-348-8735, 6220-00-841-9321. Verify interchangeability with system specifications before substitution.

What are the specifications of 223977?

Key specifications for 223977: Waveguide Outside Width: 0.996 INCHES MINIMUM AND 1.004 INCHES MAXIMUM IN; Nominal Thread Size: 0.164 INCHES FIRST FLANGE ALL CONNECTION FACILITIES IN; Thread Quantity Per Inch: 32 FIRST FLANGE ALL CONNECTION FACILITIES; Thread Direction: RIGHT-HAND FIRST FLANGE ALL CONNECTION FACILITIES. 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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