The Waveguide Assembly, cataloged under National Stock Number 5985-00-583-0056, 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 Lockheed Martin Corporation Div Rms. Government technical data includes 30 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-583-0056 |
| Primary Part Number | SMA123519G1 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| FSC Application Data | RADAR EQUIPMENT,EXCEPT AIRBORNE |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Inside Height | 0.311 INCHES NOMINAL FIRST FLANGE IN |
| Flange Inside Height | 0.311 INCHES NOMINAL SECOND FLANGE IN |
| Flange Quantity | 2 |
| Waveguide Leg Length | 0.649 INCHES NOMINAL IN |
| Bend Angle in Deg | 90.0 SINGLE BEND H-PLANE |
| Style Designator | U-BEND TYPE |
| Flexibility | RIGID SINGLE TUBING SEGMENT |
| Flange Inside Diameter | 1.000 INCHES NOMINAL SECOND FLANGE IN |
| Flange Inside Diameter | 1.000 INCHES NOMINAL FIRST FLANGE IN |
| Waveguide Inside Width | 0.622 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 1.312 INCHES NOMINAL FIRST FLANGE IN |
| Flange Outside Height | 1.312 INCHES NOMINAL SECOND FLANGE IN |
| Flange Connecting Hole Diameter | 0.147 INCHES NOMINAL SECOND FLANGE SINGLE CONNECTION FACILITY IN |
| Waveguide Center to Center Distance | 5.200 INCHES NOMINAL IN |
| Flange Inside Width | 0.622 INCHES NOMINAL SECOND FLANGE IN |
| Flange Inside Width | 0.622 INCHES NOMINAL FIRST FLANGE IN |
| Thread Direction | RIGHT-HAND FIRST FLANGE SINGLE CONNECTION FACILITY |
| Nominal Thread Size | 0.138 INCHES FIRST FLANGE SINGLE CONNECTION FACILITY IN |
| Waveguide Outside Height | 0.391 INCHES NOMINAL IN |
| Waveguide Outside Width | 0.702 INCHES NOMINAL IN |
| Flange Depth | 0.375 INCHES NOMINAL SECOND FLANGE IN |
| Flange Depth | 0.375 INCHES NOMINAL FIRST FLANGE IN |
| Flange Outside Width | 1.312 INCHES NOMINAL FIRST FLANGE IN |
| Flange Outside Width | 1.312 INCHES NOMINAL SECOND FLANGE IN |
| Waveguide Inside Height | 0.311 INCHES NOMINAL IN |
| Waveguide Longer Leg Length | 0.909 INCHES NOMINAL IN |
| Thread Class | 2B FIRST FLANGE SINGLE 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 |
|---|---|
| PLSMA123520G1 | Lockheed Martin Corporation Div Rms (USA) |
| SMA123519G1 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| Reference | Meaning |
|---|---|
| SMB123519G1 | 3/2 Design control — primary reference U.S. Government activity |
| SMLP123520G1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-00-583-0056 is a Waveguide Assembly, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-583-0056 has 2 manufacturer part numbers on file: PLSMA123520G1 (Lockheed Martin Corporation Div Rms), SMA123519G1 (Lockheed Martin Corporation Div Rms).
Key specifications for SMA123519G1: FSC Application Data: RADAR EQUIPMENT,EXCEPT AIRBORNE; Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 0.311 INCHES NOMINAL FIRST FLANGE IN; Flange Inside Height: 0.311 INCHES NOMINAL SECOND FLANGE IN. 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 5985-00-583-0056 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.