The Adapter,waveguide, cataloged under National Stock Number 5985-00-296-1270, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. Government technical data includes 26 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-296-1270 |
| Item Name | Adapter,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Status | ACTIVE |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Inside Height | 0.484 INCHES MINIMUM AND 0.490 INCHES MAXIMUM SINGLE FLANGE IN |
| Flange Quantity | 1 |
| Voltage Standing Wave Ratio | 1.50 |
| Adapter Overall Width | 2.938 INCHES NOMINAL IN |
| Style Designator | WAVEGUIDE TO COAXIAL |
| Waveguide Inside Width | 1.369 INCHES MINIMUM AND 1.375 INCHES MAXIMUM IN |
| Connector End Design | FEMALE |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 2.187 INCHES MINIMUM AND 2.217 INCHES MAXIMUM SINGLE FLANGE IN |
| Adapter Overall Height | 4.218 INCHES NOMINAL IN |
| Adapter Length | 3.000 INCHES NOMINAL IN |
| Flange Connecting Hole Diameter | 0.204 INCHES NOMINAL SINGLE FLANGE ALL CONNECTION FACILITIES IN |
| Flange Inside Width | 1.745 INCHES MINIMUM AND 1.755 INCHES MAXIMUM SINGLE FLANGE IN |
| Specification/standard Data | 81349-MIL-A-22641/16 GOVERNMENT SPECIFICATION |
| Waveguide Outside Height | 0.612 INCHES MINIMUM AND 0.618 INCHES MAXIMUM IN |
| Waveguide Outside Width | 1.497 INCHES MINIMUM AND 1.503 INCHES MAXIMUM IN |
| Flange Depth | 0.610 INCHES MINIMUM AND 0.690 INCHES MAXIMUM SINGLE FLANGE IN |
| Flange Outside Width | 2.937 INCHES MINIMUM AND 2.967 INCHES MAXIMUM SINGLE FLANGE IN |
| Waveguide Inside Height | 0.484 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN |
| Adapter Height | 2.188 INCHES NOMINAL IN |
| Material | COPPER ALLOY SINGLE TUBING SEGMENT |
| Flange Connecting Facility and Quantity | 10 UNTHREADED HOLE(S) SINGLE FLANGE ALL CONNECTION FACILITIES |
| Flange Style | CONTACT TYPE SINGLE FLANGE |
| Coaxial Connector Series Designation | N |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| MIL-DTL-22641/16 | 4/1 Identification reference U.S. Government activity |
| M22641/16-21 | 2/2 Government specification standardization U.S. Government activity |
| RED2687482 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| CWS110-1010 | C/1 Advisory reference — outside the item-of-supply concept Viking Technologies, Ltd. |
| MIL-A-22641/16 | 5/9 Secondary reference U.S. Government activity |
| UG-1005/U | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 5985-00-296-1270 is a Adapter,waveguide, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
7 possible matches (shared part number, not a government interchangeability claim): 5985-00-296-1358, 5985-00-296-4941, 5985-00-892-0732. Verify interchangeability with system specifications before substitution.
Key specifications for 5985-00-296-1270: FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT; Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 0.484 INCHES MINIMUM AND 0.490 INCHES MAXIMUM SINGLE FLANGE IN; Flange Quantity: 1. 26 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 5985-00-296-1270 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.