The Waveguide Assembly, cataloged under National Stock Number 5985-01-188-7408, 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 Naval Sea Systems Command. Government technical data includes 30 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5985-01-188-7408 |
| Primary Part Number | 5262551 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT |
| Tubing Wall Construction Style | SEAMLESS ALL TUBING SEGMENT |
| Flange Inside Height | 0.372 INCHES MINIMUM AND 0.378 INCHES MAXIMUM ALL FLANGES IN |
| Flange Quantity | 2 |
| Voltage Standing Wave Ratio | 1.15 |
| Waveguide First Leg Length | 1.120 INCHES NOMINAL IN |
| Waveguide Second Leg Length | 1.250 INCHES NOMINAL IN |
| Style Designator | FOUR BEND TYPE |
| Flexibility | FLEXIBLE ALL TUBING SEGMENT |
| Flange Inside Diameter | 1.126 INCHES MINIMUM AND 1.156 INCHES MAXIMUM ALL FLANGES IN |
| Waveguide Inside Width | 0.747 INCHES MINIMUM AND 0.753 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 1.485 INCHES MINIMUM AND 1.515 INCHES MAXIMUM ALL FLANGES IN |
| Flange Inside Width | 0.747 INCHES MINIMUM AND 0.753 INCHES MAXIMUM ALL FLANGES IN |
| Thread Direction | RIGHT-HAND ALL FLANGES ALL CONNECTION FACILITIES |
| Nominal Thread Size | 0.138 INCHES ALL FLANGES ALL CONNECTION FACILITIES IN |
| Waveguide Fourth Leg Length | 15.410 INCHES NOMINAL IN |
| Waveguide Fifth Leg Length | 0.800 INCHES NOMINAL IN |
| Waveguide Outside Height | 0.472 INCHES MINIMUM AND 0.478 INCHES MAXIMUM IN |
| Waveguide Outside Width | 0.847 INCHES MINIMUM AND 0.853 INCHES MAXIMUM IN |
| Flange Depth | 0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM ALL FLANGES IN |
| Flange Outside Width | 1.485 INCHES MINIMUM AND 1.515 INCHES MAXIMUM ALL FLANGES IN |
| Surface Treatment | RUBBER SINGLE TUBING SEGMENT OUTSIDE SURFACES |
| Surface Treatment | PRIMER AND PAINT ALL FLANGE OUTSIDE SURFACES |
| Waveguide Inside Height | 0.372 INCHES MINIMUM AND 0.378 INCHES MAXIMUM IN |
| Thread Class | 2B SINGLE FLANGE SINGLE CONNECTION FACILITY |
| Thread Quantity Per Inch | 32 ALL FLANGES ALL CONNECTION FACILITIES |
| Material | COPPER ALLOY ALL TUBING SEGMENT AND FLANGE |
| Flange Connecting Facility and Quantity | 4 THREADED HOLE(S) ALL FLANGES ALL CONNECTION FACILITIES |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) ALL FLANGES ALL CONNECTION FACILITIES |
| 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 |
|---|---|
| 5262551 | 3dbm Co Inc Waveguide Group (USA) |
| 5262551 | Microtech Inc Dba Microtech Inc (USA) |
| 5262551 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 5985PL1327340 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5985-01-188-7408 is a Waveguide Assembly, manufactured by Naval Sea Systems Command, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-188-7408 has 3 manufacturer part numbers on file: 5262551 (3dbm Co Inc Waveguide Group), 5262551 (Microtech Inc Dba Microtech Inc), 5262551 (Naval Sea Systems Command).
Key specifications for 5262551: FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT; Tubing Wall Construction Style: SEAMLESS ALL TUBING SEGMENT; Flange Inside Height: 0.372 INCHES MINIMUM AND 0.378 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 5985-01-188-7408 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.