The Adapter,waveguide, cataloged under National Stock Number 5985-00-031-1966, 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 Lockheed Martin Corporation Div Rms - Mitchel Field. Government technical data includes 22 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 5985-00-031-1966 |
| Primary Part Number | 668060 |
| Item Name | Adapter,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Lockheed Martin Corporation Div Rms - Mitchel Field |
| Status | ACTIVE |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Inside Height | 0.505 INCHES NOMINAL SINGLE FLANGE IN |
| Flange Quantity | 1 |
| Adapter Overall Width | 1.625 INCHES NOMINAL IN |
| Style Designator | WAVEGUIDE TO COAXIAL |
| Waveguide Inside Width | 0.500 INCHES NOMINAL IN |
| Connector End Design | MALE |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 1.625 INCHES NOMINAL SINGLE FLANGE IN |
| Adapter Length | 2.594 INCHES NOMINAL IN |
| Flange Connecting Hole Diameter | 0.169 INCHES NOMINAL SINGLE FLANGE SINGLE CONNECTION FACILITY IN |
| Flange Inside Width | 1.003 INCHES NOMINAL SINGLE FLANGE IN |
| Waveguide Outside Height | 0.900 INCHES NOMINAL IN |
| Waveguide Outside Width | 1.000 INCHES NOMINAL IN |
| Flange Depth | 0.438 INCHES NOMINAL SINGLE FLANGE IN |
| Flange Outside Width | 1.625 INCHES NOMINAL SINGLE FLANGE IN |
| Waveguide Inside Height | 0.400 INCHES NOMINAL IN |
| Adapter Height | 1.625 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY SINGLE TUBING SEGMENT AND FLANGE |
| Flange Connecting Facility and Quantity | 4 UNTHREADED HOLE(S) SINGLE FLANGE SINGLE CONNECTION FACILITY |
| Flange Style | COVER TYPE SINGLE FLANGE |
| Coaxial Connector Series Designation | N |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 108174 | Frontgrade Technologies Inc. (USA) |
| 668060 PRIMARY | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| Reference | Meaning |
|---|---|
| UG592U | 5/9 Secondary reference U.S. Government activity |
| 108174 | 5/9 Secondary reference U.S. Government activity |
NSN 5985-00-031-1966 is a Adapter,waveguide, manufactured by Lockheed Martin Corporation Div Rms - Mitchel Field, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-031-1966 has 2 manufacturer part numbers on file: 108174 (Frontgrade Technologies Inc.), 668060 (Lockheed Martin Corporation Div Rms - Mitchel Field).
4 possible matches (shared part number, not a government interchangeability claim): 5985-00-257-2942, 5950-00-899-9887, 4330-01-201-2805. Verify interchangeability with system specifications before substitution.
Key specifications for 668060: Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 0.505 INCHES NOMINAL SINGLE FLANGE IN; Flange Quantity: 1; Adapter Overall Width: 1.625 INCHES NOMINAL IN. 22 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.
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.