The Waveguide Assembly, cataloged under National Stock Number 5985-00-856-6502, 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 Raytheon Company Div Rmd Strategic. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5985-00-856-6502 |
| Primary Part Number | 590994-1REVB |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Raytheon Company Div Rmd Strategic |
| Status | ACTIVE |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Quantity | 2 |
| Voltage Standing Wave Ratio | 1.06 |
| Style Designator | STRAIGHT TYPE |
| Flexibility | FLEXIBLE SINGLE TUBING SEGMENT |
| Waveguide Inside Width | 2.840 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Operating Pressure | 20.0 POUNDS PER SQUARE INCH GAUGE (PSIG) MAXIMUM LBS |
| Flange Connecting Hole Diameter | 0.257 INCHES NOMINAL ALL FLANGES SINGLE CONNECTION FACILITY IN |
| Waveguide Length | 1.000 FEET NOMINAL FT |
| Waveguide Outside Height | 3.000 INCHES NOMINAL IN |
| Waveguide Outside Width | 4.500 INCHES NOMINAL IN |
| Waveguide Inside Height | 1.340 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY ALL FLANGE |
| Flange Connecting Facility and Quantity | 10 UNTHREADED HOLE(S) ALL FLANGES SINGLE CONNECTION FACILITY |
| 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 |
|---|---|
| 590994-1REVB PRIMARY | Raytheon Company Div Rmd Strategic (USA) |
| Reference | Meaning |
|---|---|
| 590994-1REVB | 5/2 Secondary reference U.S. Government activity |
NSN 5985-00-856-6502 is a Waveguide Assembly, manufactured by Raytheon Company Div Rmd Strategic, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-856-6502 has 1 manufacturer part number on file: 590994-1REVB (Raytheon Company Div Rmd Strategic).
Key specifications for 590994-1REVB: Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Quantity: 2; Voltage Standing Wave Ratio: 1.06; Style Designator: STRAIGHT TYPE. 15 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.