The Waveguide Assembly, cataloged under National Stock Number 5985-00-990-4872, 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 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5985-00-990-4872 |
| Primary Part Number | 306D057G27 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| Flange Quantity | 2 |
| Style Designator | STRAIGHT TYPE |
| Waveguide Inside Width | 3.698 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 3.560 INCHES NOMINAL ALL FLANGES IN |
| Flange Inside Width | 3.698 INCHES NOMINAL ALL FLANGES IN |
| Waveguide Length | 1.731 FEET NOMINAL FT |
| Waveguide Outside Height | 2.009 INCHES NOMINAL IN |
| Waveguide Outside Width | 3.858 INCHES NOMINAL IN |
| Flange Depth | 0.500 INCHES NOMINAL ALL FLANGES IN |
| Flange Outside Width | 5.380 INCHES NOMINAL ALL FLANGES IN |
| Surface Treatment | ENAMEL ALL FLANGE OUTSIDE SURFACES |
| Waveguide Inside Height | 1.849 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 6061 ALL FLANGE |
| Flange Connecting Facility and Quantity | 6 UNTHREADED HOLE(S) ALL FLANGES SINGLE CONNECTION FACILITY |
| Flange Style | CONTACT TYPE ALL FLANGES |
| 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 |
|---|---|
| 306D057G27 | Westinghouse Electric Corp (USA) |
| Reference | Meaning |
|---|---|
| 306D057G27 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-00-990-4872 is a Waveguide Assembly, manufactured by Westinghouse Electric Corp, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-990-4872 has 1 manufacturer part number on file: 306D057G27 (Westinghouse Electric Corp).
Key specifications for 306D057G27: Flange Quantity: 2; Style Designator: STRAIGHT TYPE; Waveguide Inside Width: 3.698 INCHES NOMINAL IN; Cross-Sectional Shape Style: INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR. 16 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 5985-00-990-4872 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.