The Adapter,waveguide, cataloged under National Stock Number 5985-01-398-0237, 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 19 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-398-0237 |
| Primary Part Number | R40-616 |
| Item Name | Adapter,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Microwave Engineering Corporation |
| Status | ACTIVE |
| Tubing Wall Construction Style | SEAMLESS ALL TUBING SEGMENT |
| Flange Inside Height | 0.321 INCHES NOMINAL SINGLE FLANGE IN |
| Flange Quantity | 1 |
| Adapter Overall Width | 1.375 INCHES NOMINAL IN |
| Bend Angle in Deg | 90.0 ALL BENDS E-PLANE |
| Style Designator | WAVEGUIDE TO COAXIAL |
| Waveguide Inside Width | 0.691 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR DOUBLE RIDGED EXTERNAL, RECTANGULAR |
| Flange Outside Height | 1.375 INCHES NOMINAL SINGLE FLANGE IN |
| Adapter Overall Height | 1.375 INCHES NOMINAL IN |
| Adapter Length | 1.340 INCHES NOMINAL IN |
| Flange Inside Width | 0.691 INCHES NOMINAL SINGLE FLANGE IN |
| Waveguide Outside Height | 1.375 INCHES NOMINAL IN |
| Waveguide Outside Width | 1.375 INCHES NOMINAL IN |
| Flange Outside Width | 1.375 INCHES NOMINAL ALL FLANGES IN |
| Waveguide Inside Height | 0.321 INCHES NOMINAL IN |
| Adapter Height | 1.340 INCHES NOMINAL IN |
| Material | METAL ALL TUBING SEGMENT AND FLANGE |
| Flange Style | CONTACT TYPE SINGLE 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 |
|---|---|
| R40-616 | Microwave Engineering Corporation (USA) |
| Reference | Meaning |
|---|---|
| 2000-6275-00 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5985-01-398-0237 is a Adapter,waveguide, manufactured by Microwave Engineering Corporation, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-398-0237 has 1 manufacturer part number on file: R40-616 (Microwave Engineering Corporation).
Key specifications for R40-616: Tubing Wall Construction Style: SEAMLESS ALL TUBING SEGMENT; Flange Inside Height: 0.321 INCHES NOMINAL SINGLE FLANGE IN; Flange Quantity: 1; Adapter Overall Width: 1.375 INCHES NOMINAL IN. 19 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 5985-01-398-0237 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.