PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

TS645-419Waveguide Assembly

Microwave Engineering Corporation · NSN 5985-00-166-0810 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-166-0810 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-166-0810. Primary manufacturer part number: TS645-419.
Features
  • Waveguide Assembly — FSC 5985
  • Flange Quantity: 2
  • Flange Inside Height: 0.505 INCHES NOMINAL ALL FLANGES IN
  • Insertion Loss in Decibels: 0.10
  • Flange Outside Width: 1.625 INCHES NOMINAL ALL FLANGES IN
  • Flange Outside Height: 1.625 INCHES NOMINAL ALL FLANGES IN
  • Thread Direction: RIGHT-HAND ALL FLANGES ALL CONNECTION FACILITIES
  • Flange Inside Width: 1.003 INCHES NOMINAL ALL FLANGES IN
Applications
  • Applications requiring Aluminum Alloy All Flange construction
General Description

The Waveguide Assembly, cataloged under National Stock Number 5985-00-166-0810, 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 Microwave Engineering Corporation. Government technical data includes 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 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
NSN5985-00-166-0810
Primary Part NumberTS645-419
Item NameWaveguide Assembly
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerMicrowave Engineering Corporation
StatusACTIVE
Flange Quantity2
Flange Inside Height0.505 INCHES NOMINAL ALL FLANGES IN
Insertion Loss in Decibels0.10
Flange Outside Width1.625 INCHES NOMINAL ALL FLANGES IN
Flange Outside Height1.625 INCHES NOMINAL ALL FLANGES IN
Thread DirectionRIGHT-HAND ALL FLANGES ALL CONNECTION FACILITIES
Flange Inside Width1.003 INCHES NOMINAL ALL FLANGES IN
Surface TreatmentSILVER ALL FLANGE INSIDE SURFACES
Waveguide Outside Width1.250 INCHES NOMINAL IN
Tubing Wall Construction StyleCORRUGATED SINGLE TUBING SEGMENT
Nominal Thread Size0.164 INCHES ALL FLANGES ALL CONNECTION FACILITIES IN
Flange Depth0.437 INCHES NOMINAL ALL FLANGES IN
Cross-Sectional Shape StyleINTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR
Operating Pressure120.0 POUNDS PER SQUARE INCH GAUGE (PSIG) MAXIMUM LBS
Surface TreatmentENAMEL ALL FLANGE OUTSIDE SURFACES
Voltage Standing Wave Ratio1.15
Flange StyleCOVER TYPE ALL FLANGES
FlexibilityFLEXIBLE SINGLE TUBING SEGMENT
Flange Connecting Facility and Quantity4 THREADED HOLE(S) ALL FLANGES ALL CONNECTION FACILITIES
Precious MaterialSILVER
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) ALL FLANGES ALL CONNECTION FACILITIES
Thread Class2B ALL FLANGES ALL CONNECTION FACILITIES
Style DesignatorBEND TYPE
Precious Material and LocationFLANGE SURFACE SILVER
Waveguide Inside Height0.656 INCHES NOMINAL IN
MaterialALUMINUM ALLOY ALL FLANGE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5905-00-049-4963115762 INTERCHANGEABLE
Resistor Set,matched
Kearfott Corporation Div Guidance and Navigation Division
3120-01-062-6522 INTERCHANGEABLE
Bearing,plain,self-Aligning
2540-01-252-8534WM120-2 INTERCHANGEABLE
Cushion,seat Back,vehicular
The Wise Company Llc
Cross-Reference Index
Part NumberManufacturer
115762 Litton Systems Inc Airtron Div (USA)
115762 Frontgrade Technologies Inc. (USA)
253627 Raytheon Company Dba Raytheon (USA)
TS645-419 PRIMARY Microwave Engineering Corporation (USA)
Related Parts
5905-00-049-4963INTERCHANGEABLE
RESISTOR SET,MATCHED
115762
3120-01-062-6522INTERCHANGEABLE
BEARING,PLAIN,SELF-ALIGNING
2540-01-252-8534INTERCHANGEABLE
CUSHION,SEAT BACK,VEHICULAR
WM120-2

Frequently Asked Questions

What is NSN 5985-00-166-0810?

NSN 5985-00-166-0810 is a Waveguide Assembly, manufactured by Microwave Engineering Corporation, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-00-166-0810?

NSN 5985-00-166-0810 has 4 cross-referenced part numbers: 115762 (Litton Systems Inc Airtron Div), 115762 (Frontgrade Technologies Inc.), 253627 (Raytheon Company Dba Raytheon), TS645-419 (Microwave Engineering Corporation).

What NSN replaces 5985-00-166-0810?

There are 3 known substitutes for 5985-00-166-0810: 5905-00-049-4963, 3120-01-062-6522, 2540-01-252-8534. Verify interchangeability with system specifications before substitution.

What are the specifications of TS645-419?

Key specifications for TS645-419: Flange Quantity: 2; Flange Inside Height: 0.505 INCHES NOMINAL ALL FLANGES IN; Insertion Loss in Decibels: 0.10; Flange Outside Width: 1.625 INCHES NOMINAL ALL FLANGES IN. 26 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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