The Adapter,waveguide, cataloged under National Stock Number 5985-00-296-1358, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. Government technical data includes 28 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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 | 5985-00-296-1358 |
| 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 | 2.835 INCHES MINIMUM AND 2.845 INCHES MAXIMUM SINGLE FLANGE IN |
| Flange Quantity | 1 |
| Voltage Standing Wave Ratio | 1.30 |
| Adapter Overall Width | 5.500 INCHES NOMINAL IN |
| Style Designator | WAVEGUIDE TO COAXIAL |
| Waveguide Inside Width | 2.836 INCHES MINIMUM AND 2.844 INCHES MAXIMUM IN |
| Connector End Design | FEMALE |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 3.940 INCHES MINIMUM AND 4.060 INCHES MAXIMUM SINGLE FLANGE IN |
| Adapter Overall Height | 6.000 INCHES NOMINAL IN |
| Adapter Length | 6.000 INCHES NOMINAL IN |
| Flange Connecting Hole Diameter | 0.385 INCHES MINIMUM AND 0.390 INCHES MAXIMUM SINGLE FLANGE ALL CONNECTION FACILITIES IN |
| Flange Inside Width | 0.999 INCHES MINIMUM AND 1.009 INCHES MAXIMUM SINGLE FLANGE IN |
| Specification/standard Data | 81349-MIL-A-22641/16 GOVERNMENT SPECIFICATION |
| Waveguide Outside Height | 1.160 INCHES MINIMUM AND 1.168 INCHES MAXIMUM IN |
| Waveguide Outside Width | 2.996 INCHES MINIMUM AND 3.004 INCHES MAXIMUM IN |
| Flange Depth | 0.735 INCHES MINIMUM AND 0.765 INCHES MAXIMUM SINGLE FLANGE IN |
| Flange Outside Width | 5.440 INCHES MINIMUM AND 5.560 INCHES MAXIMUM SINGLE FLANGE IN |
| Insertion Loss in Decibels | 0.10 |
| Surface Treatment | ANODIZE ALL TUBING SEGMENT AND FLANGE OUTSIDE SURFACES |
| Waveguide Inside Height | 1.000 INCHES MINIMUM AND 1.008 INCHES MAXIMUM IN |
| Adapter Height | 4.000 INCHES NOMINAL IN |
| Material | COPPER ALLOY ALL TUBING SEGMENT AND FLANGE |
| 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 |
|---|---|
| UG-1004/U | 5/1 Secondary reference U.S. Government activity |
| MIL-DTL-22641/16 | 4/1 Identification reference U.S. Government activity |
| MIL-A-22641/16 | 5/9 Secondary reference U.S. Government activity |
| M22641/16-20 | 2/2 Government specification standardization U.S. Government activity |
| CWS109-1010 | C/1 Advisory reference — outside the item-of-supply concept Viking Technologies, Ltd. |
NSN 5985-00-296-1358 is a Adapter,waveguide, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
6 possible matches (shared part number, not a government interchangeability claim): 5985-00-296-4941, 5985-00-892-0732, 5985-00-908-0425. Verify interchangeability with system specifications before substitution.
Key specifications for 5985-00-296-1358: FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT; Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 2.835 INCHES MINIMUM AND 2.845 INCHES MAXIMUM SINGLE FLANGE IN; Flange Quantity: 1. 28 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 5985-00-296-1358 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.