The Adapter,waveguide, cataloged under National Stock Number 5985-01-194-3083, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. The manufacturer of record is L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products. Government technical data includes 29 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-194-3083 |
| Primary Part Number | 411751-4 |
| Item Name | Adapter,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products |
| Status | ACTIVE |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Inside Height | 0.321 INCHES NOMINAL SINGLE FLANGE IN |
| Flange Quantity | 1 |
| Voltage Standing Wave Ratio | 1.25 |
| Adapter Overall Width | 1.968 INCHES NOMINAL IN |
| Style Designator | WAVEGUIDE TO COAXIAL |
| Waveguide Inside Width | 1.087 INCHES MINIMUM AND 1.093 INCHES MAXIMUM IN |
| Connector End Design | FEMALE |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR DOUBLE RIDGED EXTERNAL, RECTANGULAR DOUBLE INDENTED |
| Operating Pressure | 30.0 POUNDS PER SQUARE INCH GAUGE (PSIG) MAXIMUM LBS |
| Flange Outside Height | 1.390 INCHES NOMINAL SINGLE FLANGE IN |
| Adapter Overall Height | 1.495 INCHES MAXIMUM IN |
| Adapter Length | 1.680 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN |
| Flange Connecting Hole Diameter | 0.156 INCHES NOMINAL SINGLE FLANGE FIRST CONNECTION FACILITY IN |
| Flange Inside Width | 0.691 INCHES NOMINAL SINGLE FLANGE IN |
| Thread Direction | RIGHT-HAND SINGLE FLANGE SECOND CONNECTION FACILITY |
| Nominal Thread Size | 0.138 INCHES SINGLE FLANGE SECOND CONNECTION FACILITY IN |
| Waveguide Outside Height | 0.603 INCHES MINIMUM AND 0.609 INCHES MAXIMUM IN |
| Waveguide Outside Width | 1.187 INCHES MINIMUM AND 1.193 INCHES MAXIMUM IN |
| Flange Depth | 0.595 INCHES NOMINAL SINGLE FLANGE IN |
| Flange Outside Width | 1.968 INCHES NOMINAL SINGLE FLANGE IN |
| Insertion Loss in Decibels | 0.20 |
| Surface Treatment | CHROMATE SINGLE TUBING SEGMENT AND FLANGE ALL SURFACES |
| Waveguide Inside Height | 0.503 INCHES MINIMUM AND 0.509 INCHES MAXIMUM IN |
| Adapter Height | 1.390 INCHES NOMINAL IN |
| Thread Class | 2B SINGLE FLANGE SECOND CONNECTION FACILITY |
| Thread Quantity Per Inch | 32 SINGLE FLANGE SECOND CONNECTION FACILITY |
| Material | ALUMINUM ALLOY 6061 SINGLE TUBING SEGMENT AND FLANGE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 411751-4 PRIMARY | L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products (USA) |
| 226157 | Microtech Inc Dba Microtech Inc (USA) |
| 411751-4 | Microwave Engineering Corporation (USA) |
| Reference | Meaning |
|---|---|
| 411751-4 | 5/9 Secondary reference Tyco Electronics Corp |
NSN 5985-01-194-3083 is a Adapter,waveguide, manufactured by L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-194-3083 has 3 manufacturer part numbers on file: 411751-4 (L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products), 226157 (Microtech Inc Dba Microtech Inc), 411751-4 (Microwave Engineering Corporation).
1 possible match (shared part number, not a government interchangeability claim): 6515-01-506-0288. Verify interchangeability with system specifications before substitution.
Key specifications for 411751-4: FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT; Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 0.321 INCHES NOMINAL SINGLE FLANGE IN; Flange Quantity: 1. 29 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 5985-01-194-3083 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.