The Adapter,waveguide, cataloged under National Stock Number 5985-01-322-3909, 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 Frontgrade Technologies Inc.. Government technical data includes 30 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-322-3909 |
| Primary Part Number | DRA650-TNC-F-3C |
| Item Name | Adapter,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Frontgrade Technologies Inc. |
| Status | ACTIVE |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Inside Height | 0.318 INCHES MINIMUM AND 0.324 INCHES MAXIMUM SINGLE FLANGE IN |
| Flange Quantity | 1 |
| Precious Material | GOLD |
| Voltage Standing Wave Ratio | 1.20 |
| Adapter Overall Width | 1.375 INCHES NOMINAL IN |
| Style Designator | WAVEGUIDE TO COAXIAL |
| Waveguide Inside Width | 6.492 INCHES MINIMUM AND 6.508 INCHES MAXIMUM IN |
| Connector End Design | FEMALE |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR DOUBLE RIDGED EXTERNAL, RECTANGULAR DOUBLE INDENTED |
| Flange Outside Height | 1.360 INCHES MINIMUM AND 1.400 INCHES MAXIMUM SINGLE FLANGE IN |
| Adapter Overall Height | 1.500 INCHES NOMINAL IN |
| Adapter Length | 1.980 INCHES MAXIMUM IN |
| Flange Inside Width | 0.717 INCHES MINIMUM AND 0.723 INCHES MAXIMUM SINGLE FLANGE IN |
| Thread Direction | RIGHT-HAND SINGLE FLANGE ALL CONNECTION FACILITIES |
| Nominal Thread Size | 0.138 INCHES SINGLE FLANGE ALL CONNECTION FACILITIES IN |
| Waveguide Outside Height | 3.402 INCHES MINIMUM AND 3.418 INCHES MAXIMUM IN |
| Waveguide Outside Width | 6.652 INCHES MINIMUM AND 6.668 INCHES MAXIMUM IN |
| Flange Depth | 0.230 INCHES MINIMUM AND 0.270 INCHES MAXIMUM SINGLE FLANGE IN |
| Flange Outside Width | 1.360 INCHES MINIMUM AND 1.400 INCHES MAXIMUM SINGLE FLANGE IN |
| Insertion Loss in Decibels | 0.30 |
| Surface Treatment | CHROMATE AND ENAMEL ALL TUBING SEGMENT AND FLANGE OUTSIDE SURFACES |
| Precious Material and Location | CONTACT EXTERNAL SURFACES GOLD |
| Waveguide Inside Height | 3.242 INCHES MINIMUM AND 3.258 INCHES MAXIMUM IN |
| Adapter Height | 1.375 INCHES NOMINAL IN |
| Thread Class | 2B SINGLE FLANGE ALL CONNECTION FACILITIES |
| Material | ALUMINUM ALLOY ALL TUBING SEGMENT AND FLANGE |
| Flange Connecting Facility and Quantity | 4 THREADED HOLE(S) SINGLE FLANGE ALL CONNECTION FACILITIES |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SINGLE FLANGE ALL CONNECTION FACILITIES |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| DRA650-TNC-F-3C | Frontgrade Technologies Inc. (USA) |
| R47-TA-C2 | Microwave Engineering Corporation (USA) |
| Reference | Meaning |
|---|---|
| 290213P1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-01-322-3909 is a Adapter,waveguide, manufactured by Frontgrade Technologies Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-322-3909 has 2 manufacturer part numbers on file: DRA650-TNC-F-3C (Frontgrade Technologies Inc.), R47-TA-C2 (Microwave Engineering Corporation).
Key specifications for DRA650-TNC-F-3C: FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT; Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 0.318 INCHES MINIMUM AND 0.324 INCHES MAXIMUM SINGLE FLANGE IN; Flange Quantity: 1. 30 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.
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.