The Waveguide Assembly, cataloged under National Stock Number 5985-01-027-6558, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. Government technical data includes 30 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-027-6558 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Status | ACTIVE |
| Tubing Wall Construction Style | SEAMLESS ALL TUBING SEGMENTSEAMLESS ALL TUBING SEGMENT |
| Flange Inside Height | 0.872 INCHES NOMINAL SECOND FLANGE0.872 INCHES NOMINAL SECOND FLANGE IN |
| Flange Inside Height | 1.002 INCHES NOMINAL FIRST FLANGE1.002 INCHES NOMINAL FIRST FLANGE IN |
| Flange Quantity | 22 |
| Voltage Standing Wave Ratio | 1.101.10 |
| Bend Angle in Deg | 90.0 FIRST BEND E-PLANE90.0 FIRST BEND E-PLANE |
| Bend Angle in Deg | 90.0 SECOND BEND H-PLANE90.0 SECOND BEND H-PLANE |
| Flexibility | RIGID ALL TUBING SEGMENTRIGID ALL TUBING SEGMENT |
| Waveguide Inside Width | 1.872 INCHES NOMINAL1.872 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULARINTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Connecting Hole Diameter | 0.199 INCHES NOMINAL ALL FLANGES ALL CONNECTION FACILITIES0.199 INCHES NOMINAL ALL FLANGES ALL CONNECTION FACILITIES IN |
| Flange Inside Width | 1.872 INCHES NOMINAL SECOND FLANGE1.872 INCHES NOMINAL SECOND FLANGE IN |
| Flange Inside Width | 2.002 INCHES NOMINAL FIRST FLANGE2.002 INCHES NOMINAL FIRST FLANGE IN |
| Nominal Thread Size | 0.312 INCHES ALL FLANGES ALL CONNECTION FACILITIES0.312 INCHES ALL FLANGES ALL CONNECTION FACILITIES IN |
| Waveguide Outside Height | 1.000 INCHES NOMINAL1.000 INCHES NOMINAL IN |
| Waveguide Outside Width | 2.000 INCHES NOMINAL2.000 INCHES NOMINAL IN |
| Flange Depth | 0.375 INCHES NOMINAL FIRST FLANGE0.375 INCHES NOMINAL FIRST FLANGE IN |
| Flange Depth | 0.938 INCHES NOMINAL SECOND FLANGE0.938 INCHES NOMINAL SECOND FLANGE IN |
| Insertion Loss in Decibels | 0.030.03 |
| Surface Treatment | ENAMEL ALL FLANGE OUTSIDE SURFACES |
| Surface Treatment | CHROMATE ZINC AND ENAMEL ALL TUBING SEGMENT OUTSIDE SURFACES |
| Waveguide Inside Height | 0.872 INCHES NOMINAL0.872 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY ALL FLANGE |
| Material | ALUMINUM ALLOY 6061 ALL TUBING SEGMENT |
| Flange Connecting Facility and Quantity | 8 THREADED HOLE(S) SECOND FLANGE ALL CONNECTION FACILITIES8 THREADED HOLE(S) SECOND FLANGE ALL CONNECTION FACILITIES |
| Flange Connecting Facility and Quantity | 8 UNTHREADED HOLE(S) FIRST FLANGE ALL CONNECTION FACILITIES8 UNTHREADED HOLE(S) FIRST FLANGE ALL CONNECTION FACILITIES |
| Flange Outside Diameter | 3.625 INCHES NOMINAL ALL FLANGES3.625 INCHES NOMINAL ALL FLANGES IN |
| Thread Series Designator | UNF ALL FLANGES ALL CONNECTION FACILITIES |
| Flange Style | CHOKE TYPE SECOND FLANGECHOKE TYPE SECOND FLANGE |
| Flange Style | COVER TYPE FIRST FLANGECOVER TYPE FIRST FLANGE |
| 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 |
|---|---|
| 219872 | 3/9 Design control — primary reference Edo |
NSN 5985-01-027-6558 is a Waveguide Assembly, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
Key specifications for 5985-01-027-6558: Tubing Wall Construction Style: SEAMLESS ALL TUBING SEGMENTSEAMLESS ALL TUBING SEGMENT; Flange Inside Height: 0.872 INCHES NOMINAL SECOND FLANGE0.872 INCHES NOMINAL SECOND FLANGE IN; Flange Inside Height: 1.002 INCHES NOMINAL FIRST FLANGE1.002 INCHES NOMINAL FIRST FLANGE IN; Flange Quantity: 22. 30 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.