The Waveguide Assembly, cataloged under National Stock Number 5985-01-264-2906, 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 Microtech Inc Dba Microtech Inc. Government technical data includes 30 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-264-2906 |
| Primary Part Number | 225612 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Microtech Inc Dba Microtech Inc |
| Status | ACTIVE |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT |
| Tubing Wall Construction Style | SEAMLESS ALL TUBING SEGMENT |
| Flange Inside Height | 0.309 INCHES MINIMUM AND 0.313 INCHES MAXIMUM ALL FLANGES IN |
| Flange Quantity | 2 |
| Precious Material | SILVER |
| Voltage Standing Wave Ratio | 1.15 |
| Flexibility | RIGID THIRD TUBING SEGMENT |
| Flexibility | FLEXIBLE SECOND TUBING SEGMENT |
| Flexibility | RIGID FIRST TUBING SEGMENT |
| Flange Inside Diameter | 0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM ALL FLANGES IN |
| Waveguide Inside Width | 0.622 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Operating Pressure | 10.0 POUNDS PER SQUARE INCH GAUGE (PSIG) MAXIMUM LBS |
| Flange Outside Height | 1.297 INCHES MINIMUM AND 1.327 INCHES MAXIMUM ALL FLANGES IN |
| Flange Connecting Hole Diameter | 0.144 INCHES MINIMUM AND 0.147 INCHES MAXIMUM ALL FLANGES ALL CONNECTION FACILITIES IN |
| Flange Inside Width | 0.620 INCHES MINIMUM AND 0.624 INCHES MAXIMUM ALL FLANGES IN |
| Specification/standard Data | 53711-5543098 MANUFACTURERS SOURCE CONTROL |
| Waveguide Outside Height | 0.388 INCHES MINIMUM AND 0.394 INCHES MAXIMUM IN |
| Waveguide Outside Width | 0.699 INCHES MINIMUM AND 0.705 INCHES MAXIMUM IN |
| Flange Depth | 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM ALL FLANGES IN |
| Flange Outside Width | 1.297 INCHES MINIMUM AND 1.327 INCHES MAXIMUM ALL FLANGES IN |
| Surface Treatment | SILVER SECOND TUBING SEGMENT INSIDE SURFACES |
| Precious Material and Location | INTERNAL SURFACES SILVER |
| Waveguide Inside Height | 0.311 INCHES NOMINAL IN |
| Material | COPPER ALLOY FIRST TUBING SEGMENT |
| Material | ALUMINUM ALLOY ALL FLANGE |
| Material | COPPER ALLOY OR BERYLLIUM SECOND TUBING SEGMENT |
| Material | COPPER ALLOY THIRD TUBING SEGMENT |
| Flange Connecting Facility and Quantity | 4 UNTHREADED HOLE(S) ALL FLANGES ALL CONNECTION FACILITIES |
| Flange Style | CHOKE 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 |
NSN 5985-01-264-2906 is a Waveguide Assembly, manufactured by Microtech Inc Dba Microtech Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-264-2906 has 4 manufacturer part numbers on file: 5543098 (Raytheon Company), 5543098 (Naval Sea Systems Command), 225612 (Microtech Inc Dba Microtech Inc), TRS575126 (Microwave Engineering Corporation).
4 possible matches (shared part number, not a government interchangeability claim): 5920-01-289-5190, 5330-01-290-3971, 6150-01-381-7284. Verify interchangeability with system specifications before substitution.
Key specifications for 225612: FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT; Tubing Wall Construction Style: SEAMLESS ALL TUBING SEGMENT; Flange Inside Height: 0.309 INCHES MINIMUM AND 0.313 INCHES MAXIMUM ALL FLANGES 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 5985-01-264-2906 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.