The Waveguide Assembly, cataloged under National Stock Number 5985-01-381-0039, 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 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-381-0039 |
| Primary Part Number | TFT-86083 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Microwave Engineering Corporation |
| Status | ACTIVE |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Inside Height | 1.494 INCHES MINIMUM AND 1.506 INCHES MAXIMUM FIRST FLANGE IN |
| Flange Inside Height | 1.507 INCHES MINIMUM AND 1.510 INCHES MAXIMUM SECOND FLANGE IN |
| Flange Quantity | 2 |
| Voltage Standing Wave Ratio | 1.20 |
| Style Designator | OFFSET BEND TYPE |
| Flexibility | FLEXIBLE SINGLE TUBING SEGMENT |
| Waveguide Inside Width | 2.834 INCHES MINIMUM AND 2.846 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Operating Pressure | 5.0 POUNDS PER SQUARE INCH GAUGE (PSIG) MAXIMUM LBS |
| Flange Connecting Hole Diameter | 0.257 INCHES MINIMUM AND 0.260 INCHES MAXIMUM SECOND FLANGE ALL CONNECTION FACILITIES IN |
| Waveguide Center to Center Distance | 4.500 INCHES NOMINAL IN |
| Flange Inside Width | 2.834 INCHES MINIMUM AND 2.846 INCHES MAXIMUM FIRST FLANGE IN |
| Flange Inside Width | 3.007 INCHES MINIMUM AND 3.010 INCHES MAXIMUM SECOND FLANGE IN |
| Thread Direction | RIGHT-HAND FIRST FLANGE ALL CONNECTION FACILITIES |
| Waveguide Length | 30.000 INCHES NOMINAL IN |
| Nominal Thread Size | 0.250 INCHES FIRST FLANGE ALL CONNECTION FACILITIES IN |
| Waveguide Outside Height | 1.494 INCHES MINIMUM AND 1.506 INCHES MAXIMUM IN |
| Waveguide Outside Width | 2.994 INCHES MINIMUM AND 3.006 INCHES MAXIMUM IN |
| Flange Depth | 1.235 INCHES MINIMUM AND 1.265 INCHES MAXIMUM FIRST FLANGE IN |
| Flange Depth | 1.235 INCHES MINIMUM AND 1.265 INCHES MAXIMUM SECOND FLANGE IN |
| Tubing Twist Type | TWISTABLE SINGLE TUBING SEGMENT |
| Insertion Loss in Decibels | 0.20 |
| Surface Treatment | CHROMATE ZINC AND PAINT ALL FLANGE OUTSIDE SURFACES |
| Waveguide Inside Height | 1.334 INCHES MINIMUM AND 1.346 INCHES MAXIMUM IN |
| Thread Class | 2B FIRST FLANGE ALL CONNECTION FACILITIES |
| Material | RUBBER SINGLE TUBING JACKET |
| Material | ALUMINUM ALLOY ALL FLANGE |
| Material | COPPER ALLOY SINGLE TUBING SEGMENT |
| Flange Connecting Facility and Quantity | 8 UNTHREADED HOLE(S) SECOND FLANGE ALL CONNECTION FACILITIES |
| 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 |
|---|---|
| 1214841-202 | Frontgrade Technologies Inc. (USA) |
| TFT-86083 PRIMARY | Microwave Engineering Corporation (USA) |
| Reference | Meaning |
|---|---|
| 1214841-202 | 7/2 Vendor item drawing reference Lockheed Martin Corporation Div Rms |
| 1214841-202 | 5/9 Secondary reference U.S. Government activity |
| 1214841-202 | 5/9 Secondary reference Lockheed Martin Corporation Div Rms - Mitchel Field |
NSN 5985-01-381-0039 is a Waveguide Assembly, manufactured by Microwave Engineering Corporation, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-381-0039 has 2 manufacturer part numbers on file: 1214841-202 (Frontgrade Technologies Inc.), TFT-86083 (Microwave Engineering Corporation).
Key specifications for TFT-86083: Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 1.494 INCHES MINIMUM AND 1.506 INCHES MAXIMUM FIRST FLANGE IN; Flange Inside Height: 1.507 INCHES MINIMUM AND 1.510 INCHES MAXIMUM SECOND FLANGE IN; Flange Quantity: 2. 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.
NSN 5985-01-381-0039 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.