The Waveguide Assembly, cataloged under National Stock Number 5985-00-877-3667, 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. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 — Antennas, Waveguides, and Related Equipment (FSG 59) |
| Manufacturers | Microwave Engineering Corporation (CAGE 06351); Frontgrade Technologies Inc. (CAGE 66544); Microtech Inc Dba Microtech Inc (CAGE 54647) |
| Parameter | Value |
|---|---|
| NSN | 5985-00-877-3667 |
| Primary Part Number | TFT57026-42 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Microwave Engineering Corporation |
| Status | ACTIVE |
| 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 |
|---|---|
| TFT57026-42 | Microwave Engineering Corporation (USA) |
| 111973-1 | Frontgrade Technologies Inc. (USA) |
| AT3B062-42.00 | Frontgrade Technologies Inc. (USA) |
| MTPS62-501-N-42B | Microtech Inc Dba Microtech Inc (USA) |
| Reference | Meaning |
|---|---|
| 111973-1 | 5/9 Secondary reference U.S. Government activity |
| 111973-42 | 5/9 Secondary reference U.S. Government activity |
| TFT57026-42 | 5/9 Secondary reference U.S. Government activity |
| 215-00830-1 | 3/2 Design control — primary reference U.S. Government activity |
| AT3B062-42 | 5/9 Secondary reference U.S. Government activity |
NSN 5985-00-877-3667 is a Waveguide Assembly, manufactured by Microwave Engineering Corporation, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-877-3667 has 4 manufacturer part numbers on file: TFT57026-42 (Microwave Engineering Corporation), 111973-1 (Frontgrade Technologies Inc.), AT3B062-42.00 (Frontgrade Technologies Inc.), MTPS62-501-N-42B (Microtech Inc Dba Microtech Inc).
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.