The Waveguide Assembly, cataloged under National Stock Number 5985-01-435-3491, 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 Ems Technologies Inc Div Defense & Space Systems. Government technical data includes 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-435-3491 |
| Primary Part Number | 178228-1 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Ems Technologies Inc Div Defense & Space Systems |
| Status | ACTIVE |
| Flange Inside Height | 0.316 INCHES MINIMUM AND 0.326 INCHES MAXIMUM ALL FLANGES IN |
| Flange Quantity | 3 |
| Flange Outside Height | 1.380 INCHES NOMINAL ALL FLANGES IN |
| Flange Inside Width | 0.715 INCHES MINIMUM AND 0.725 INCHES MAXIMUM ALL FLANGES IN |
| Flange Depth | 0.250 INCHES NOMINAL ALL FLANGES IN |
| Flange Outside Width | 1.380 INCHES NOMINAL ALL FLANGES IN |
| Flange Style | CONTACT, DOUBLE RIDGE TYPE ALL FLANGES |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 178228-1 PRIMARY | Ems Technologies Inc Div Defense & Space Systems (USA) |
| Reference | Meaning |
|---|---|
| 16VE716-1 | 7/2 Vendor item drawing reference U.S. Government activity |
| 5985PL0926869 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5985-01-435-3491 is a Waveguide Assembly, manufactured by Ems Technologies Inc Div Defense & Space Systems, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-435-3491 has 1 manufacturer part number on file: 178228-1 (Ems Technologies Inc Div Defense & Space Systems).
Key specifications for 178228-1: Flange Inside Height: 0.316 INCHES MINIMUM AND 0.326 INCHES MAXIMUM ALL FLANGES IN; Flange Quantity: 3; Flange Outside Height: 1.380 INCHES NOMINAL ALL FLANGES IN; Flange Inside Width: 0.715 INCHES MINIMUM AND 0.725 INCHES MAXIMUM ALL FLANGES IN. 7 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.