The Adapter,waveguide, cataloged under National Stock Number 5985-01-423-3668, 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 Smiths Interconnect, Inc. Div Smiths Interconnect Inc - Thousand Oaks. Government technical data includes 27 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-423-3668 |
| Primary Part Number | GC350-2 |
| Item Name | Adapter,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Smiths Interconnect, Inc. Div Smiths Interconnect Inc - Thousand Oaks |
| Status | ACTIVE |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Inside Height | 0.622 INCHES NOMINAL SINGLE FLANGE IN |
| Flange Quantity | 1 |
| Voltage Standing Wave Ratio | 1.20 |
| Adapter Overall Width | 2.690 INCHES NOMINAL IN |
| Style Designator | WAVEGUIDE TO COAXIAL |
| Waveguide Inside Width | 1.372 INCHES NOMINAL IN |
| Connector End Design | FEMALE |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 1.940 INCHES NOMINAL SINGLE FLANGE IN |
| Adapter Overall Height | 2.470 INCHES NOMINAL IN |
| Adapter Length | 2.490 INCHES NOMINAL IN |
| Flange Connecting Hole Diameter | 0.196 INCHES NOMINAL SINGLE FLANGE SINGLE CONNECTION FACILITY IN |
| Flange Inside Width | 1.372 INCHES NOMINAL SINGLE FLANGE IN |
| Specification/standard Data | 80063-A3188036 GOVERNMENT SPECIFICATION |
| Waveguide Outside Height | 0.750 INCHES NOMINAL IN |
| Waveguide Outside Width | 1.500 INCHES NOMINAL IN |
| Flange Depth | 0.500 INCHES NOMINAL SINGLE FLANGE IN |
| Flange Outside Width | 2.690 INCHES NOMINAL SINGLE FLANGE IN |
| Insertion Loss in Decibels | 0.30 |
| Waveguide Inside Height | 0.622 INCHES NOMINAL IN |
| Adapter Height | 1.940 INCHES NOMINAL IN |
| Material | COPPER FIRST TUBING SEGMENT AND FLANGE |
| Material | STEEL CORROSION RESISTING SECOND COUPLING |
| Flange Connecting Facility and Quantity | 8 UNTHREADED HOLE(S) SINGLE FLANGE SINGLE CONNECTION FACILITY |
| Flange Style | CONTACT TYPE SINGLE FLANGE |
| Coaxial Connector Series Designation | N |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| GC350-2 PRIMARY | Smiths Interconnect, Inc. Div Smiths Interconnect Inc - Thousand Oaks (USA) |
| A3188036-002 PRIMARY | Harris Corp Farinon Div (USA) |
| A3188036-002 PRIMARY | Ute Microwave, Inc (USA) |
| Reference | Meaning |
|---|---|
| GC350-2 | 5/9 Secondary reference Trak Microwave Corporation Dba Channel Microwave Div Microwave Division |
| A3188036-002 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5985-01-423-3668 is a Adapter,waveguide, manufactured by Smiths Interconnect, Inc. Div Smiths Interconnect Inc - Thousand Oaks, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-423-3668 has 3 manufacturer part numbers on file: GC350-2 (Smiths Interconnect, Inc. Div Smiths Interconnect Inc - Thousand Oaks), A3188036-002 (Harris Corp Farinon Div), A3188036-002 (Ute Microwave, Inc).
Key specifications for GC350-2: Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 0.622 INCHES NOMINAL SINGLE FLANGE IN; Flange Quantity: 1; Voltage Standing Wave Ratio: 1.20. 27 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 5985-01-423-3668 has DEMIL Code D. 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.