The Waveguide Assembly, cataloged under National Stock Number 5985-01-053-9897, 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 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-053-9897 |
| Primary Part Number | 2920172 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT |
| Tubing Wall Construction Style | SEAMLESS ALL TUBING SEGMENT |
| Waveguide Height | 3.765 INCHES NOMINAL IN |
| Flange Quantity | 3 |
| Voltage Standing Wave Ratio | 1.12 |
| Style Designator | TEE, SHUNT TYPE |
| Flexibility | RIGID ALL TUBING SEGMENT |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Operating Pressure | 40.0 POUNDS PER SQUARE INCH GAUGE (PSIG) MAXIMUM LBS |
| Waveguide Length | 4.630 INCHES NOMINAL IN |
| Surface Treatment | ENAMEL AND PRIMER ALL TUBING SEGMENT AND FLANGE OUTSIDE SURFACES |
| Material | COPPER ALLOY ALL TUBING SEGMENT AND FLANGE |
| Waveguide Longer Offset Distance | 2.690 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 |
|---|---|
| 2920172 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 187TH12-40PG-22-187FS12 | Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc (USA) |
NSN 5985-01-053-9897 is a Waveguide Assembly, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-053-9897 has 2 manufacturer part numbers on file: 2920172 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 187TH12-40PG-22-187FS12 (Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc).
Key specifications for 2920172: FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT; Tubing Wall Construction Style: SEAMLESS ALL TUBING SEGMENT; Waveguide Height: 3.765 INCHES NOMINAL IN; Flange Quantity: 3. 13 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 5985-01-053-9897 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.