The Adapter,waveguide, cataloged under National Stock Number 5985-01-533-6132, 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 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-533-6132 |
| Primary Part Number | GC350-3 |
| 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 | 0.497 INCHES NOMINAL SINGLE FLANGE IN |
| Flange Quantity | 1 |
| Voltage Standing Wave Ratio | 1.20 |
| Input Impedance Rating in Ohms | 50.0 |
| Adapter Overall Width | 2.690 INCHES NOMINAL IN |
| Style Designator | WAVEGUIDE TO COAXIAL |
| Waveguide Inside Width | 1.122 INCHES NOMINAL IN |
| Connector End Design | FEMALE |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Operating Pressure | 15.0 POUNDS PER SQUARE INCH GAUGE (PSIG) MAXIMUM LBS |
| Flange Outside Height | 1.750 INCHES NOMINAL SINGLE FLANGE IN |
| Adapter Overall Height | 2.490 INCHES NOMINAL IN |
| Adapter Length | 1.740 INCHES NOMINAL IN |
| Flange Connecting Hole Diameter | 0.169 INCHES NOMINAL SINGLE FLANGE ALL CONNECTION FACILITIES IN |
| Flange Inside Width | 1.122 INCHES NOMINAL SINGLE FLANGE IN |
| Waveguide Outside Height | 0.625 INCHES NOMINAL IN |
| Waveguide Outside Width | 1.250 INCHES NOMINAL IN |
| Flange Depth | 0.500 INCHES NOMINAL SINGLE FLANGE IN |
| Flange Outside Width | 2.500 INCHES NOMINAL SINGLE FLANGE IN |
| Insertion Loss in Decibels | 0.30 |
| Waveguide Inside Height | 0.497 INCHES NOMINAL IN |
| Adapter Height | 1.940 INCHES NOMINAL IN |
| Material | COPPER SINGLE FLANGE |
| Flange Connecting Facility and Quantity | 8 UNTHREADED HOLE(S) SINGLE FLANGE ALL CONNECTION FACILITIES |
| Flange Style | CONTACT TYPE SINGLE FLANGE |
| Output Impedance Rating in Ohms | 50.0 |
| 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 |
|---|---|
| GC350-3 PRIMARY | Smiths Interconnect, Inc. Div Smiths Interconnect Inc - Thousand Oaks (USA) |
| 74112-128 | Microwave Development Company Inc Dba Microwave Development Company Inc (USA) |
| Reference | Meaning |
|---|---|
| A3188036 | D/9 Drawing number reference only U.S. Government activity |
| A3188036-003 | 7/2 Vendor item drawing reference U.S. Government activity |
| GC350-3 | 5/9 Secondary reference Trak Microwave Corporation Dba Channel Microwave Div Microwave Division |
NSN 5985-01-533-6132 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 5985-01-533-6132 has 2 manufacturer part numbers on file: GC350-3 (Smiths Interconnect, Inc. Div Smiths Interconnect Inc - Thousand Oaks), 74112-128 (Microwave Development Company Inc Dba Microwave Development Company Inc).
Key specifications for GC350-3: Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 0.497 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 5985-01-533-6132 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.