PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

253849Waveguide Assembly

Raytheon Company Dba Raytheon · NSN 5985-00-177-7098 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-177-7098 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-177-7098. Primary manufacturer part number: 253849.
Features
  • Waveguide Assembly — FSC 5985
  • Flange Depth: 0.438 INCHES NOMINAL ALL FLANGES IN
  • Flange Inside Diameter: 1.220 INCHES NOMINAL ALL FLANGES IN
  • Flange Inside Width: 0.910 INCHES NOMINAL ALL FLANGES IN
  • Thread Class: 2B ALL FLANGES ALL CONNECTION FACILITIES
  • Waveguide Outside Width: 1.250 INCHES NOMINAL IN
  • Nominal Thread Size: 0.164 INCHES ALL FLANGES ALL CONNECTION FACILITIES IN
  • Insertion Loss in Decibels: 0.10
Applications
  • Applications requiring Beryllium or Copper Single Tubing Segment construction
General Description

The Waveguide Assembly, cataloged under National Stock Number 5985-00-177-7098, 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 Raytheon Company Dba Raytheon. Government technical data includes 30 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5985-00-177-7098
Primary Part Number253849
Item NameWaveguide Assembly
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerRaytheon Company Dba Raytheon
StatusACTIVE
Flange Depth0.438 INCHES NOMINAL ALL FLANGES IN
Flange Inside Diameter1.220 INCHES NOMINAL ALL FLANGES IN
Flange Inside Width0.910 INCHES NOMINAL ALL FLANGES IN
Thread Class2B ALL FLANGES ALL CONNECTION FACILITIES
Waveguide Outside Width1.250 INCHES NOMINAL IN
Nominal Thread Size0.164 INCHES ALL FLANGES ALL CONNECTION FACILITIES IN
Insertion Loss in Decibels0.10
Voltage Standing Wave Ratio1.15
Thread DirectionRIGHT-HAND ALL FLANGES ALL CONNECTION FACILITIES
Tubing Wall Construction StyleCORRUGATED SINGLE TUBING SEGMENT
Precious MaterialSILVER
Waveguide Center to Center Distance1.562 FEET NOMINAL FT
Flange Quantity2
Flange Inside Height0.400 INCHES NOMINAL ALL FLANGES IN
Precious Material and LocationINTERNAL TUBING SEGMENT SURFACES SILVER
Waveguide Longer Leg Length10.310 INCHES NOMINAL IN
Waveguide Inside Height0.656 INCHES NOMINAL IN
Flange Connecting Facility and Quantity4 THREADED HOLE(S) ALL FLANGES ALL CONNECTION FACILITIES
FSC Application DataANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT
MaterialBERYLLIUM OR COPPER SINGLE TUBING SEGMENT
Style DesignatorU-BEND TYPE
Cross-Sectional Shape StyleINTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR
Flange StyleCHOKE TYPE ALL FLANGES
Operating Pressure120.0 POUNDS PER SQUARE INCH GAUGE (PSIG) MAXIMUM LBS
Waveguide Leg Length3.810 INCHES NOMINAL IN
FlexibilityFLEXIBLE SINGLE TUBING SEGMENT
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) ALL FLANGES ALL CONNECTION FACILITIES
Surface TreatmentSILVER SINGLE TUBING SEGMENT INSIDE SURFACES
Flange Outside Width1.625 INCHES NOMINAL ALL FLANGES IN
Flange Outside Height1.625 INCHES NOMINAL ALL FLANGES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5910-00-643-9141ELC5111550342REV3SH1AND2 INTERCHANGEABLE
Capacitor,fixed,paper Dielectric
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
3120-01-551-2871 INTERCHANGEABLE
Bearing,sleeve
Cross-Reference Index
Part NumberManufacturer
TS645424 Microwave Engineering Corporation (USA)
115755 Litton Systems Inc Airtron Div (USA)
115755 Frontgrade Technologies Inc. (USA)
253849 PRIMARY Raytheon Company Dba Raytheon (USA)
Related Parts
5910-00-643-9141INTERCHANGEABLE
CAPACITOR,FIXED,PAPER DIELECTRIC
ELC5111550342REV3SH1AND2
3120-01-551-2871INTERCHANGEABLE
BEARING,SLEEVE

Frequently Asked Questions

What is NSN 5985-00-177-7098?

NSN 5985-00-177-7098 is a Waveguide Assembly, manufactured by Raytheon Company Dba Raytheon, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-00-177-7098?

NSN 5985-00-177-7098 has 4 cross-referenced part numbers: TS645424 (Microwave Engineering Corporation), 115755 (Litton Systems Inc Airtron Div), 115755 (Frontgrade Technologies Inc.), 253849 (Raytheon Company Dba Raytheon).

What NSN replaces 5985-00-177-7098?

There are 2 known substitutes for 5985-00-177-7098: 5910-00-643-9141, 3120-01-551-2871. Verify interchangeability with system specifications before substitution.

What are the specifications of 253849?

Key specifications for 253849: Flange Depth: 0.438 INCHES NOMINAL ALL FLANGES IN; Flange Inside Diameter: 1.220 INCHES NOMINAL ALL FLANGES IN; Flange Inside Width: 0.910 INCHES NOMINAL ALL FLANGES IN; Thread Class: 2B ALL FLANGES 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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