The Waveguide Assembly, cataloged under National Stock Number 5985-01-050-8809, 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 L3harris Technologies, Inc. Dba Harris Corp Div Harris Defense Communications. Government technical data includes 30 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5985-01-050-8809 |
| Primary Part Number | SM-D-883278 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | L3harris Technologies, Inc. Dba Harris Corp Div Harris Defense Communications |
| Status | ACTIVE |
| FSC Application Data | RADAR EQUIPMENT |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Inside Height | 0.622 INCHES NOMINAL ALL FLANGES IN |
| Flange Quantity | 2 |
| Voltage Standing Wave Ratio | 1.10 |
| Style Designator | STRAIGHT TYPE |
| Flexibility | RIGID SINGLE TUBING SEGMENT |
| Waveguide Inside Width | 1.372 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Operating Pressure | 15.0 POUNDS PER SQUARE INCH GAUGE (PSIG) MAXIMUM LBS |
| Flange Outside Height | 1.940 INCHES NOMINAL ALL FLANGES IN |
| Flange Connecting Hole Diameter | 0.196 INCHES NOMINAL SECOND FLANGE FIRST CONNECTION FACILITY IN |
| Flange Connecting Hole Diameter | 0.257 INCHES NOMINAL FIRST FLANGE SECOND CONNECTION FACILITY IN |
| Flange Connecting Hole Diameter | 0.257 INCHES NOMINAL SECOND FLANGE SECOND CONNECTION FACILITY IN |
| Flange Inside Width | 1.372 INCHES NOMINAL ALL FLANGES IN |
| Thread Direction | RIGHT-HAND FIRST FLANGE FIRST CONNECTION FACILITY |
| Waveguide Length | 4.250 INCHES NOMINAL IN |
| Nominal Thread Size | 0.190 INCHES FIRST FLANGE FIRST CONNECTION FACILITY IN |
| Waveguide Outside Height | 0.750 INCHES NOMINAL IN |
| Waveguide Outside Width | 1.500 INCHES NOMINAL IN |
| Flange Depth | 0.500 INCHES NOMINAL ALL FLANGES IN |
| Flange Outside Width | 2.690 INCHES NOMINAL ALL FLANGES IN |
| Surface Treatment | PAINT SINGLE TUBING SEGMENT AND FLANGE OUTSIDE SURFACES |
| Waveguide Inside Height | 0.622 INCHES NOMINAL IN |
| Thread Class | 2B FIRST FLANGE FIRST CONNECTION FACILITY |
| Thread Quantity Per Inch | 32 FIRST FLANGE FIRST CONNECTION FACILITY |
| Material | ALUMINUM ALLOY SINGLE TUBING SEGMENT AND FLANGE |
| Flange Connecting Facility and Quantity | 2 UNTHREADED HOLE(S) SECOND FLANGE SECOND CONNECTION FACILITY |
| Flange Connecting Facility and Quantity | 2 UNTHREADED HOLE(S) FIRST FLANGE SECOND CONNECTION FACILITY |
| Flange Connecting Facility and Quantity | 8 THREADED HOLE(S) FIRST FLANGE FIRST CONNECTION FACILITY |
| 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 |
|---|---|
| SM-D-883278 | L3harris Technologies, Inc. Dba Harris Corp Div Harris Defense Communications (USA) |
| Reference | Meaning |
|---|---|
| SM-D-883278 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-01-050-8809 is a Waveguide Assembly, manufactured by L3harris Technologies, Inc. Dba Harris Corp Div Harris Defense Communications, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-050-8809 has 1 manufacturer part number on file: SM-D-883278 (L3harris Technologies, Inc. Dba Harris Corp Div Harris Defense Communications).
Key specifications for SM-D-883278: FSC Application Data: RADAR EQUIPMENT; Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 0.622 INCHES NOMINAL ALL FLANGES IN; Flange Quantity: 2. 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.
NSN 5985-01-050-8809 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.