PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M20-3821-2155-22Adapter,waveguide

Arianegroup SAS · NSN 5985-00-402-0053 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-402-0053 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-402-0053. Primary manufacturer part number: M20-3821-2155-22.
Features
  • Adapter,waveguide — FSC 5985
  • Style Designator: WAVEGUIDE TO COAXIAL
  • Adapter Overall Height: 3.062 INCHES MINIMUM AND 3.092 INCHES MAXIMUM IN
  • Flange Quantity: 1
  • Flange Style: COVER TYPE SINGLE FLANGE
  • Flange Connecting Facility and Quantity: 6 UNTHREADED HOLE(S) SINGLE FLANGE SINGLE CONNECTION FACILITY
  • Waveguide Outside Width: 1.496 INCHES MINIMUM AND 1.504 INCHES MAXIMUM IN
  • Waveguide Inside Width: 1.368 INCHES MINIMUM AND 1.376 INCHES MAXIMUM IN
Applications
  • Applications requiring Aluminum Alloy Single Tubing Segment and Flange construction
General Description

The Adapter,waveguide, cataloged under National Stock Number 5985-00-402-0053, 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 Arianegroup SAS. Government technical data includes 24 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5985-00-402-0053
Primary Part NumberM20-3821-2155-22
Item NameAdapter,waveguide
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerArianegroup SAS
StatusACTIVE
Style DesignatorWAVEGUIDE TO COAXIAL
Adapter Overall Height3.062 INCHES MINIMUM AND 3.092 INCHES MAXIMUM IN
Flange Quantity1
Flange StyleCOVER TYPE SINGLE FLANGE
Flange Connecting Facility and Quantity6 UNTHREADED HOLE(S) SINGLE FLANGE SINGLE CONNECTION FACILITY
Waveguide Outside Width1.496 INCHES MINIMUM AND 1.504 INCHES MAXIMUM IN
Waveguide Inside Width1.368 INCHES MINIMUM AND 1.376 INCHES MAXIMUM IN
Adapter Length1.735 INCHES MINIMUM AND 1.765 INCHES MAXIMUM IN
Flange Connecting Hole Diameter0.199 INCHES MINIMUM AND 0.203 INCHES MAXIMUM SINGLE FLANGE ALL CONNECTION FACILITIES IN
Specification/standard Data16111-1793C234 MANUFACTURERS SPECIFICATION CONTROL
Flange Inside Width1.503 INCHES MINIMUM AND 1.506 INCHES MAXIMUM SINGLE FLANGE IN
Adapter Diameter3.110 INCHES MINIMUM AND 3.140 INCHES MAXIMUM IN
Coaxial Connector Series DesignationN
MaterialALUMINUM ALLOY SINGLE TUBING SEGMENT AND FLANGE
Cross-Sectional Shape StyleINTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR
Tubing Wall Construction StyleSEAMLESS SINGLE TUBING SEGMENT
Waveguide Outside Height0.746 INCHES MINIMUM AND 0.754 INCHES MAXIMUM IN
Voltage Standing Wave Ratio1.35
Flange Outside Diameter3.120 INCHES MINIMUM AND 3.130 INCHES MAXIMUM SINGLE FLANGE IN
FSC Application DataRADAR EQUIPMENT
Flange Inside Height0.753 INCHES MINIMUM AND 0.756 INCHES MAXIMUM SINGLE FLANGE IN
Waveguide Inside Height0.618 INCHES MINIMUM AND 0.626 INCHES MAXIMUM IN
Flange Depth0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM SINGLE FLANGE IN
Connector End DesignFEMALE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5120-00-034-6776 INTERCHANGEABLE
Tool
6625-00-542-1292SG340G INTERCHANGEABLE
Generator,signal
Joint Electronics Type Designation System
4920-00-962-5867612A INTERCHANGEABLE
Mount,bolometer and Crystal
Telephonics Corp/prd Instruments
3455-01-042-4841 INTERCHANGEABLE
File,rotary
6625-01-098-0465612A INTERCHANGEABLE
Generator,signal
Keysight Technologies Inc
6635-01-298-8380612-A INTERCHANGEABLE
Tester,material Hardness
Fischer George Foundry Systems Inc P O Box 1607 Seminole Ok 74818-1607
Cross-Reference Index
Part NumberManufacturer
M20-3821-2155-22 Arianegroup SAS (FRA)
N101A-1154 Lexan Industries, Inc Dba Struthers Electronics Div Struthers Electronics (USA)
612A Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq (USA)
1793C234-1 Rodale Electronics Inc. Dba Rodale Wireless (USA)
Related Parts
5120-00-034-6776INTERCHANGEABLE
TOOL
6625-00-542-1292INTERCHANGEABLE
GENERATOR,SIGNAL
SG340G
4920-00-962-5867INTERCHANGEABLE
MOUNT,BOLOMETER AND CRYSTAL
612A
3455-01-042-4841INTERCHANGEABLE
FILE,ROTARY
6625-01-098-0465INTERCHANGEABLE
GENERATOR,SIGNAL
612A
6635-01-298-8380INTERCHANGEABLE
TESTER,MATERIAL HARDNESS
612-A

Frequently Asked Questions

What is NSN 5985-00-402-0053?

NSN 5985-00-402-0053 is a Adapter,waveguide, manufactured by Arianegroup SAS, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-00-402-0053?

NSN 5985-00-402-0053 has 4 cross-referenced part numbers: M20-3821-2155-22 (Arianegroup SAS), N101A-1154 (Lexan Industries, Inc Dba Struthers Electronics Div Struthers Electronics), 612A (Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq), 1793C234-1 (Rodale Electronics Inc. Dba Rodale Wireless).

What NSN replaces 5985-00-402-0053?

There are 6 known substitutes for 5985-00-402-0053: 5120-00-034-6776, 6625-00-542-1292, 4920-00-962-5867 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of M20-3821-2155-22?

Key specifications for M20-3821-2155-22: Style Designator: WAVEGUIDE TO COAXIAL; Adapter Overall Height: 3.062 INCHES MINIMUM AND 3.092 INCHES MAXIMUM IN; Flange Quantity: 1; Flange Style: COVER TYPE SINGLE FLANGE. 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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