The Adapter,waveguide, cataloged under National Stock Number 5985-00-258-6429, 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 L3harris Technologies, Inc.. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-258-6429 |
| Primary Part Number | 2137542G001 |
| Item Name | Adapter,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | L3harris Technologies, Inc. |
| Status | ACTIVE |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Quantity | 1 |
| Waveguide Outside Diameter | 3.000 INCHES NOMINAL IN |
| Style Designator | WAVEGUIDE TO WAVEGUIDE |
| Waveguide Inside Diameter | 2.813 INCHES NOMINAL IN |
| Flange Inside Diameter | 1.156 INCHES NOMINAL SINGLE FLANGE IN |
| Connector End Design | FEMALE |
| Cross-Sectional Shape Style | INTERNAL, ROUND EXTERNAL, ROUND |
| Adapter Length | 5.000 INCHES NOMINAL IN |
| Flange Depth | 1.750 INCHES NOMINAL SINGLE FLANGE IN |
| Flange Connecting Facility and Quantity | 1 CLAMP RING(S) SINGLE FLANGE SINGLE CONNECTION FACILITY |
| Flange Outside Diameter | 4.500 INCHES NOMINAL SINGLE FLANGE IN |
| Flange Style | CHOKE TYPE SINGLE FLANGE |
| Coaxial Connector Series Designation | BNC |
| 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 |
|---|---|
| 2137542G001 PRIMARY | L3harris Technologies, Inc. (USA) |
| R40TB | Microwave Engineering Corporation (USA) |
| WRD-750-175 | 3dbm Co Inc Waveguide Group (USA) |
| 22750-T | Microwave Development Company Inc Dba Microwave Development Company Inc (USA) |
NSN 5985-00-258-6429 is a Adapter,waveguide, manufactured by L3harris Technologies, Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-258-6429 has 4 manufacturer part numbers on file: 2137542G001 (L3harris Technologies, Inc.), R40TB (Microwave Engineering Corporation), WRD-750-175 (3dbm Co Inc Waveguide Group), 22750-T (Microwave Development Company Inc Dba Microwave Development Company Inc).
Key specifications for 2137542G001: Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Quantity: 1; Waveguide Outside Diameter: 3.000 INCHES NOMINAL IN; Style Designator: WAVEGUIDE TO WAVEGUIDE. 14 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.