The Adapter,waveguide, cataloged under National Stock Number 5985-01-151-0680, 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 18 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-151-0680 |
| Primary Part Number | TR57C021 |
| Item Name | Adapter,waveguide |
| 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 | 1.005 INCHES NOMINAL SINGLE FLANGE IN |
| Flange Quantity | 1 |
| Adapter Overall Width | 1.800 INCHES NOMINAL IN |
| Style Designator | WAVEGUIDE TO COAXIAL |
| Waveguide Inside Width | 0.311 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Adapter Overall Height | 1.950 INCHES NOMINAL IN |
| Adapter Length | 2.120 INCHES NOMINAL IN |
| Flange Inside Width | 1.062 INCHES NOMINAL SINGLE FLANGE IN |
| Nominal Thread Size | 0.138 INCHES SINGLE FLANGE SINGLE CONNECTION FACILITY IN |
| Waveguide Outside Height | 0.391 INCHES NOMINAL IN |
| Waveguide Outside Width | 0.702 INCHES NOMINAL IN |
| Waveguide Inside Height | 0.622 INCHES NOMINAL IN |
| Adapter Height | 1.800 INCHES NOMINAL IN |
| Thread Class | HF4 SINGLE FLANGE SINGLE CONNECTION FACILITY |
| Material | ALUMINUM ALLOY SINGLE TUBING SEGMENT AND FLANGE |
| Flange Style | COVER TYPE FIRST FLANGE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 123SCAV5743-3 | Northrop Grumman Systems Corporation (USA) |
| TR57C021 PRIMARY | Microwave Engineering Corporation (USA) |
NSN 5985-01-151-0680 is a Adapter,waveguide, manufactured by Microwave Engineering Corporation, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-151-0680 has 2 manufacturer part numbers on file: 123SCAV5743-3 (Northrop Grumman Systems Corporation), TR57C021 (Microwave Engineering Corporation).
Key specifications for TR57C021: Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 1.005 INCHES NOMINAL SINGLE FLANGE IN; Flange Quantity: 1; Adapter Overall Width: 1.800 INCHES NOMINAL IN. 18 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 5985-01-151-0680 has DEMIL Code B. 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.