The Adapter,waveguide, cataloged under National Stock Number 5985-01-032-3674, 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 9 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-032-3674 |
| Primary Part Number | B40-176 |
| Item Name | Adapter,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Microwave Engineering Corporation |
| Status | ACTIVE |
| Flange Quantity | 1 |
| Voltage Standing Wave Ratio | 1.10 |
| Adapter Overall Width | 2.850 INCHES NOMINAL IN |
| Style Designator | WAVEGUIDE TO COAXIAL |
| Connector End Design | FEMALE |
| Adapter Length | 2.130 INCHES NOMINAL IN |
| Insertion Loss in Decibels | 0.10 |
| Adapter Height | 2.290 INCHES NOMINAL IN |
| Coaxial Connector Series Designation | TNC |
| 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 |
|---|---|
| B40-176 | Microwave Engineering Corporation (USA) |
| Reference | Meaning |
|---|---|
| 581R971H04 | 3/2 Design control — primary reference U.S. Government activity |
| 581R971H04 | 5/9 Secondary reference Microwave Engineering Corporation |
NSN 5985-01-032-3674 is a Adapter,waveguide, manufactured by Microwave Engineering Corporation, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-032-3674 has 1 manufacturer part number on file: B40-176 (Microwave Engineering Corporation).
Key specifications for B40-176: Flange Quantity: 1; Voltage Standing Wave Ratio: 1.10; Adapter Overall Width: 2.850 INCHES NOMINAL IN; Style Designator: WAVEGUIDE TO COAXIAL. 9 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 5985-01-032-3674 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.