The Waveguide Assembly, cataloged under National Stock Number 5985-00-451-2118, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. Government technical data includes 30 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-451-2118 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Status | ACTIVE |
| Tubing Wall Construction Style | CONVOLUTE SINGLE TUBING SEGMENT |
| Flange Inside Height | 0.872 INCHES NOMINAL FIRST FLANGE IN |
| Flange Inside Height | 1.002 INCHES NOMINAL SECOND FLANGE IN |
| Flange Quantity | 2 |
| Precious Material | SILVER |
| Voltage Standing Wave Ratio | 1.06 |
| Style Designator | STRAIGHT TYPE |
| Flexibility | FLEXIBLE SINGLE TUBING SEGMENT |
| Waveguide Inside Width | 1.872 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Operating Pressure | 30.0 POUNDS PER SQUARE INCH GAUGE (PSIG) MAXIMUM LBS |
| Flange Connecting Hole Diameter | 0.199 INCHES NOMINAL SECOND FLANGE SINGLE CONNECTION FACILITY IN |
| Flange Inside Width | 1.872 INCHES NOMINAL FIRST FLANGE IN |
| Flange Inside Width | 2.002 INCHES NOMINAL SECOND FLANGE IN |
| Thread Direction | RIGHT-HAND FIRST FLANGE SINGLE CONNECTION FACILITY |
| Waveguide Length | 1.000 FEET NOMINAL FT |
| Nominal Thread Size | 0.190 INCHES FIRST FLANGE SINGLE CONNECTION FACILITY IN |
| Waveguide Outside Height | 1.000 INCHES NOMINAL IN |
| Waveguide Outside Width | 2.000 INCHES NOMINAL IN |
| Flange Depth | 0.375 INCHES NOMINAL SECOND FLANGE IN |
| Flange Depth | 0.938 INCHES NOMINAL FIRST FLANGE IN |
| Insertion Loss in Decibels | 0.025 |
| Surface Treatment | SILVER ALL FLANGE OUTSIDE SURFACES |
| Surface Treatment | SILVER ALL FLANGE INSIDE SURFACES |
| Precious Material and Location | FLANGE SURFACE SILVER |
| Waveguide Inside Height | 0.872 INCHES NOMINAL IN |
| Thread Class | 2B FIRST FLANGE SINGLE CONNECTION FACILITY |
| Material | COPPER ALLOY ALL FLANGE |
| Flange Connecting Facility and Quantity | 8 THREADED HOLE(S) FIRST FLANGE SINGLE CONNECTION FACILITY |
| Flange Connecting Facility and Quantity | 8 UNTHREADED HOLE(S) SECOND 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 |
| Reference | Meaning |
|---|---|
| AT3B187-12 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5985-00-451-2118 is a Waveguide Assembly, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
Key specifications for 5985-00-451-2118: Tubing Wall Construction Style: CONVOLUTE SINGLE TUBING SEGMENT; Flange Inside Height: 0.872 INCHES NOMINAL FIRST FLANGE IN; Flange Inside Height: 1.002 INCHES NOMINAL SECOND FLANGE IN; Flange Quantity: 2. 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 5985-00-451-2118 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.