The Waveguide Assembly, cataloged under National Stock Number 5985-00-265-9018, 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 Westinghouse Electric Corp. Government technical data includes 19 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-265-9018 |
| Primary Part Number | 55A3031G1 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| FSC Application Data | MULTIAPPLICATION |
| Tubing Wall Construction Style | STRAIGHT SEAM SINGLE TUBING SEGMENT |
| Flange Quantity | 2 |
| Bend Angle in Deg | 68.5 SINGLE BEND E-PLANE |
| Style Designator | CORNER TYPE |
| Waveguide Offset Distance | 4.750 INCHES NOMINAL IN |
| Flexibility | RIGID SINGLE TUBING SEGMENT |
| Waveguide Inside Width | 6.500 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 5.250 INCHES NOMINAL ALL FLANGES IN |
| Flange Connecting Hole Diameter | 0.344 INCHES NOMINAL ALL FLANGES SINGLE CONNECTION FACILITY IN |
| Waveguide Outside Height | 3.314 INCHES NOMINAL IN |
| Waveguide Outside Width | 6.564 INCHES NOMINAL IN |
| Flange Outside Width | 8.564 INCHES NOMINAL ALL FLANGES IN |
| Waveguide Inside Height | 3.250 INCHES NOMINAL IN |
| Material | METAL NONFERROUS/D ALL TUBING SEGMENT AND FLANGE |
| Flange Connecting Facility and Quantity | 10 UNTHREADED HOLE(S) ALL FLANGES SINGLE CONNECTION FACILITY |
| Flange Style | CONTACT TYPE ALL FLANGES |
| Waveguide Longer Offset Distance | 4.750 INCHES NOMINAL IN |
| 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 |
|---|---|
| 55A3031G1 PRIMARY | Westinghouse Electric Corp (USA) |
| 55A3031G1REV9 | Westinghouse Electric Corp (USA) |
NSN 5985-00-265-9018 is a Waveguide Assembly, manufactured by Westinghouse Electric Corp, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-265-9018 has 2 manufacturer part numbers on file: 55A3031G1 (Westinghouse Electric Corp), 55A3031G1REV9 (Westinghouse Electric Corp).
Key specifications for 55A3031G1: FSC Application Data: MULTIAPPLICATION; Tubing Wall Construction Style: STRAIGHT SEAM SINGLE TUBING SEGMENT; Flange Quantity: 2; Bend Angle in Deg: 68.5 SINGLE BEND E-PLANE. 19 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 5985-00-265-9018 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.