The Adapter,waveguide, cataloged under National Stock Number 5985-01-342-8928, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. Government technical data includes 29 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-342-8928 |
| Item Name | Adapter,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Status | ACTIVE |
| FSC Application Data | ANTENNAS,WAVEGUIDE AND RELATED EQUIPMENT |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Inside Height | 0.318 INCHES MINIMUM AND 0.322 INCHES MAXIMUM SINGLE FLANGE IN |
| Flange Quantity | 1 |
| Voltage Standing Wave Ratio | 1.30 |
| Adapter Overall Width | 1.360 INCHES MINIMUM AND 1.390 INCHES MAXIMUM IN |
| Style Designator | WAVEGUIDE TO COAXIAL |
| Waveguide Inside Width | 0.688 INCHES MINIMUM AND 0.694 INCHES MAXIMUM IN |
| Connector End Design | FEMALE |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR DOUBLE RIDGED EXTERNAL, RECTANGULAR |
| Flange Outside Height | 1.360 INCHES MINIMUM AND 1.390 INCHES MAXIMUM SINGLE FLANGE IN |
| Adapter Overall Height | 1.7475 INCHES MAXIMUM IN |
| Adapter Length | 1.300 INCHES MAXIMUM IN |
| Flange Connecting Hole Diameter | 0.0937 INCHES MINIMUM AND 0.0939 INCHES MAXIMUM SINGLE FLANGE THIRD CONNECTION FACILITY IN |
| Flange Connecting Hole Diameter | 0.0960 INCHES MINIMUM AND 0.0965 INCHES MAXIMUM SINGLE FLANGE SECOND CONNECTION FACILITY IN |
| Flange Inside Width | 0.688 INCHES MINIMUM AND 0.694 INCHES MAXIMUM SINGLE FLANGE IN |
| Thread Direction | RIGHT-HAND SINGLE FLANGE FIRST CONNECTION FACILITY |
| Nominal Thread Size | 0.138 INCHES SINGLE FLANGE FIRST CONNECTION FACILITY IN |
| Specification/standard Data | 81349-MIL-A-22641/23 GOVERNMENT SPECIFICATION |
| Waveguide Outside Height | 0.418 INCHES MINIMUM AND 0.424 INCHES MAXIMUM IN |
| Waveguide Outside Width | 0.788 INCHES MINIMUM AND 0.794 INCHES MAXIMUM IN |
| Flange Depth | 0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM SINGLE FLANGE IN |
| Flange Outside Width | 1.360 INCHES MINIMUM AND 1.390 INCHES MAXIMUM SINGLE FLANGE IN |
| Insertion Loss in Decibels | 0.10 |
| Waveguide Inside Height | 0.318 INCHES MINIMUM AND 0.324 INCHES MAXIMUM IN |
| Adapter Height | 1.360 INCHES MINIMUM AND 1.390 INCHES MAXIMUM IN |
| Thread Class | 2B SINGLE FLANGE FIRST CONNECTION FACILITY |
| Material | ALUMINUM ALLOY SINGLE TUBING SEGMENT AND FLANGE |
| Flange Connecting Facility and Quantity | 4 THREADED HOLE(S) SINGLE FLANGE FIRST CONNECTION FACILITY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| MIL-A-22641/23 | 4/1 Identification reference U.S. Government activity |
| M22641/23-24 | 2/2 Government specification standardization U.S. Government activity |
NSN 5985-01-342-8928 is a Adapter,waveguide, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5985-01-343-0441. Verify interchangeability with system specifications before substitution.
Key specifications for 5985-01-342-8928: FSC Application Data: ANTENNAS,WAVEGUIDE AND RELATED EQUIPMENT; Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 0.318 INCHES MINIMUM AND 0.322 INCHES MAXIMUM SINGLE FLANGE IN; Flange Quantity: 1. 29 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.
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.