The Adapter,waveguide, cataloged under National Stock Number 5985-00-944-8598, 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 19 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-944-8598 |
| Primary Part Number | J-175-A-4 |
| Item Name | Adapter,waveguide |
| 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 SINGLE TUBING SEGMENT |
| Flange Quantity | 1 |
| Voltage Standing Wave Ratio | 1.20 |
| Adapter Diameter | 4.750 INCHES NOMINAL IN |
| Style Designator | WAVEGUIDE TO COAXIAL |
| Waveguide Inside Width | 1.867 INCHES MINIMUM AND 1.877 INCHES MAXIMUM IN |
| Connector End Design | MALE |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Adapter Overall Height | 4.750 INCHES NOMINAL IN |
| Adapter Length | 4.000 INCHES NOMINAL IN |
| Waveguide Outside Height | 0.995 INCHES MINIMUM AND 1.005 INCHES MAXIMUM IN |
| Waveguide Outside Width | 1.995 INCHES MINIMUM AND 2.005 INCHES MAXIMUM IN |
| Waveguide Inside Height | 0.867 INCHES MINIMUM AND 0.877 INCHES MAXIMUM IN |
| Material | ALUMINUM ALLOY SINGLE TUBING SEGMENT AND FLANGE |
| Flange Connecting Facility and Quantity | 8 THREADED HOLE(S) SINGLE FLANGE SINGLE CONNECTION FACILITY |
| Flange Outside Diameter | 4.750 INCHES NOMINAL SINGLE FLANGE IN |
| Flange Style | CONTACT TYPE SINGLE FLANGE |
| Coaxial Connector Series Designation | N |
| 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 |
|---|---|
| J-175-A-4 | 3dbm Co Inc Waveguide Group (USA) |
| 8769670-501 | Microtech Inc Dba Microtech Inc (USA) |
| Reference | Meaning |
|---|---|
| B34208 | 5/9 Secondary reference Skyworks Solutions, Inc. |
| 8769670-501 | 3/1 Design control — primary reference Waveline Inc |
| 8769670-501 | 5/9 Secondary reference Gould Inc Defense Systems Navcom Systems Div 3dbm Opns |
| 8769670-501 | 5/1 Secondary reference Microwave Engineering Corporation |
| 876970-501 | C/1 Advisory reference — outside the item-of-supply concept Lockheed Martin Corporation Dba Lockheed Martin Aerostructures Div Advanced Technology Laboratories |
| 8769670-501 | 5/9 Secondary reference Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin |
NSN 5985-00-944-8598 is a Adapter,waveguide, manufactured by 3dbm Co Inc Waveguide Group, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-944-8598 has 2 manufacturer part numbers on file: J-175-A-4 (3dbm Co Inc Waveguide Group), 8769670-501 (Microtech Inc Dba Microtech Inc).
Key specifications for J-175-A-4: FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT; Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Quantity: 1; Voltage Standing Wave Ratio: 1.20. 19 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 5985-00-944-8598 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.