The Waveguide Assembly, cataloged under National Stock Number 5985-01-450-9712, 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 Omega Laboratories Inc. Government technical data includes 21 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5985-01-450-9712 |
| Primary Part Number | 258FC |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Omega Laboratories Inc |
| Status | ACTIVE |
| Flange Inside Height | 0.400 INCHES NOMINAL SECOND FLANGE IN |
| Flange Inside Height | 0.400 INCHES NOMINAL FIRST FLANGE IN |
| Flange Quantity | 2 |
| Precious Material | SILVER |
| Style Designator | BEND TYPE |
| Waveguide Offset Distance | 1.680 INCHES NOMINAL IN |
| Flexibility | RIGID SINGLE TUBING SEGMENT |
| Waveguide Inside Width | 0.900 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 1.630 INCHES NOMINAL FIRST FLANGE IN |
| Flange Outside Height | 1.630 INCHES NOMINAL SECOND FLANGE IN |
| Waveguide Outside Height | 0.500 INCHES NOMINAL IN |
| Waveguide Outside Width | 1.000 INCHES NOMINAL IN |
| Flange Outside Width | 1.630 INCHES NOMINAL FIRST FLANGE IN |
| Flange Outside Width | 1.630 INCHES NOMINAL SECOND FLANGE IN |
| Precious Material and Location | EXTERNAL SURFACE PLATING SILVER |
| Waveguide Inside Height | 0.400 INCHES NOMINAL IN |
| Material | COPPER ALLOY SINGLE TUBING SEGMENT AND FLANGE |
| Flange Style | CHOKE TYPE FIRST FLANGE |
| Flange Style | COVER TYPE SECOND FLANGE |
| Waveguide Longer Offset Distance | 1.680 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 |
|---|---|
| 258FC PRIMARY | Omega Laboratories Inc (USA) |
| Reference | Meaning |
|---|---|
| G1-29-9076 | D/9 Drawing number reference only Astronics Dme Llc Dba Astronics Dme |
| G1-29-9076-001 | 7/2 Vendor item drawing reference Astronics Dme Llc Dba Astronics Dme |
NSN 5985-01-450-9712 is a Waveguide Assembly, manufactured by Omega Laboratories Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-450-9712 has 1 manufacturer part number on file: 258FC (Omega Laboratories Inc).
Key specifications for 258FC: Flange Inside Height: 0.400 INCHES NOMINAL SECOND FLANGE IN; Flange Inside Height: 0.400 INCHES NOMINAL FIRST FLANGE IN; Flange Quantity: 2; Precious Material: SILVER. 21 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 5985-01-450-9712 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.