The Waveguide Assembly, cataloged under National Stock Number 5985-01-187-4962, 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 3dbm Co Inc Waveguide Group. Government technical data includes 30 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5985-01-187-4962 |
| Primary Part Number | 5187778 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | 3dbm Co Inc Waveguide Group |
| Status | ACTIVE |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT |
| Tubing Wall Construction Style | SEAMLESS SECOND TUBING SEGMENT |
| Tubing Wall Construction Style | SEAMLESS FIRST TUBING SEGMENT |
| Tubing Wall Construction Style | SEAMLESS FOURTH TUBING SEGMENT |
| Tubing Wall Construction Style | CORRUGATED THIRD TUBING SEGMENT |
| Tubing Wall Construction Style | SEAMLESS FIFTH TUBING SEGMENT |
| Flange Inside Height | 0.309 INCHES MINIMUM AND 0.313 INCHES MAXIMUM FIRST FLANGE IN |
| Waveguide Height | 1.920 INCHES MINIMUM AND 1.980 INCHES MAXIMUM IN |
| Flange Quantity | 2 |
| Voltage Standing Wave Ratio | 1.15 |
| Bend Angle in Deg | 90.0 ALL BENDS E-PLANE |
| Style Designator | DOUBLE BEND TYPE |
| Flexibility | RIGID FIFTH TUBING SEGMENT |
| Flexibility | RIGID FOURTH TUBING SEGMENT |
| Flexibility | RIGID FIRST TUBING SEGMENT |
| Flexibility | RIGID SECOND TUBING SEGMENT |
| Flexibility | FLEXIBLE THIRD TUBING SEGMENT |
| Flange Inside Diameter | 0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM FIRST FLANGE IN |
| Waveguide Inside Width | 0.620 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 1.297 INCHES MINIMUM AND 1.327 INCHES MAXIMUM FIRST FLANGE IN |
| Waveguide Center to Center Distance | 4.940 INCHES MINIMUM AND 4.960 INCHES MAXIMUM IN |
| Flange Inside Width | 0.620 INCHES MINIMUM AND 0.624 INCHES MAXIMUM FIRST FLANGE IN |
| Thread Direction | RIGHT-HAND FIRST FLANGE ALL CONNECTION FACILITIES |
| Nominal Thread Size | 0.138 INCHES FIRST FLANGE ALL CONNECTION FACILITIES IN |
| Specification/standard Data | 53711-5187778 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 FIRST FLANGE IN |
| Flange Outside Width | 1.297 INCHES MINIMUM AND 1.327 INCHES MAXIMUM FIRST FLANGE 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 |
|---|---|
| 5187778 PRIMARY | 3dbm Co Inc Waveguide Group (USA) |
| 5187778 | Raytheon Company (USA) |
| 5187778 PRIMARY | Microtech Inc Dba Microtech Inc (USA) |
| 5187778 PRIMARY | Maury Microwave, Inc. Dba Maury Microwave (USA) |
| 5187778 PRIMARY | Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc (USA) |
| Reference | Meaning |
|---|---|
| 5187778 | 7/2 Vendor item drawing reference Naval Sea Systems Command |
| 5985PL1327321 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5985-01-187-4962 is a Waveguide Assembly, manufactured by 3dbm Co Inc Waveguide Group, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-187-4962 has 5 manufacturer part numbers on file: 5187778 (3dbm Co Inc Waveguide Group), 5187778 (Raytheon Company), 5187778 (Microtech Inc Dba Microtech Inc), 5187778 (Maury Microwave, Inc. Dba Maury Microwave), 5187778 (Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc).
Key specifications for 5187778: FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT; Tubing Wall Construction Style: SEAMLESS SECOND TUBING SEGMENT; Tubing Wall Construction Style: SEAMLESS FIRST TUBING SEGMENT; Tubing Wall Construction Style: SEAMLESS FOURTH TUBING SEGMENT. 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 5985-01-187-4962 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.