The Waveguide Assembly, cataloged under National Stock Number 5985-00-449-8520, 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 Microwave Engineering Corporation. Government technical data includes 28 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5985-00-449-8520 |
| Primary Part Number | TFT64-4A9N |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Microwave Engineering Corporation |
| Status | ACTIVE |
| Flange Inside Height | 0.505 INCHES NOMINAL SECOND FLANGE IN |
| Flange Inside Height | 0.400 INCHES NOMINAL FIRST FLANGE IN |
| Flange Quantity | 2 |
| Voltage Standing Wave Ratio | 1.12 |
| Style Designator | STRAIGHT TYPE |
| Flexibility | FLEXIBLE SINGLE TUBING SEGMENT |
| Flange Inside Diameter | 1.220 INCHES NOMINAL SECOND FLANGE IN |
| Operating Pressure | 60.0 POUNDS PER SQUARE INCH GAUGE (PSIG) MAXIMUM LBS |
| Flange Outside Height | 1.625 INCHES NOMINAL SECOND FLANGE IN |
| Flange Outside Height | 1.625 INCHES NOMINAL FIRST FLANGE IN |
| Flange Connecting Hole Diameter | 0.169 INCHES NOMINAL FIRST FLANGE SINGLE CONNECTION FACILITY IN |
| Flange Inside Width | 0.900 INCHES NOMINAL FIRST FLANGE IN |
| Flange Inside Width | 1.003 INCHES NOMINAL SECOND FLANGE IN |
| Thread Direction | RIGHT-HAND SECOND FLANGE SINGLE CONNECTION FACILITY |
| Waveguide Length | 9.000 INCHES NOMINAL IN |
| Nominal Thread Size | 0.138 INCHES SECOND FLANGE SINGLE CONNECTION FACILITY IN |
| Flange Depth | 0.437 INCHES NOMINAL SECOND FLANGE IN |
| Flange Depth | 0.438 INCHES NOMINAL FIRST FLANGE IN |
| Flange Outside Width | 1.625 INCHES NOMINAL SECOND FLANGE IN |
| Flange Outside Width | 1.625 INCHES NOMINAL FIRST FLANGE IN |
| Tubing Twist Type | TWISTABLE SINGLE TUBING SEGMENT |
| Thread Class | 2B SECOND FLANGE SINGLE CONNECTION FACILITY |
| Material | ALUMINUM ALL FLANGE |
| Flange Connecting Facility and Quantity | 4 THREADED HOLE(S) SECOND FLANGE SINGLE CONNECTION FACILITY |
| Flange Connecting Facility and Quantity | 4 UNTHREADED HOLE(S) FIRST FLANGE SINGLE CONNECTION FACILITY |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SECOND FLANGE SINGLE CONNECTION FACILITY |
| Flange Style | COVER TYPE FIRST FLANGE |
| Flange Style | CHOKE TYPE SECOND FLANGE |
| 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 |
|---|---|
| TFT64-4A9N PRIMARY | Microwave Engineering Corporation (USA) |
| Reference | Meaning |
|---|---|
| USCD10123-3 | 5/9 Secondary reference The Boeing Company Div Legacy Corinth Bgrc |
| USCD-10123-3 | 7/9 Vendor item drawing reference Boeing Company, the |
| TFT64-4A9N | 5/9 Secondary reference Ward Leonard Ct Llc |
NSN 5985-00-449-8520 is a Waveguide Assembly, manufactured by Microwave Engineering Corporation, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-449-8520 has 1 manufacturer part number on file: TFT64-4A9N (Microwave Engineering Corporation).
Key specifications for TFT64-4A9N: Flange Inside Height: 0.505 INCHES NOMINAL SECOND FLANGE IN; Flange Inside Height: 0.400 INCHES NOMINAL FIRST FLANGE IN; Flange Quantity: 2; Voltage Standing Wave Ratio: 1.12. 28 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 5985-00-449-8520 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.