The Adapter,waveguide, cataloged under National Stock Number 5985-00-004-0105, 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 Keysight Technologies Inc. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-004-0105 |
| Primary Part Number | P281B-013 |
| Item Name | Adapter,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Keysight Technologies Inc |
| Status | ACTIVE |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Inside Height | 0.394 INCHES NOMINAL SINGLE FLANGE IN |
| Flange Quantity | 1 |
| Voltage Standing Wave Ratio | 1.25 |
| Criticality Code Justification | FEAT |
| Style Designator | WAVEGUIDE TO COAXIAL |
| Waveguide Inside Width | 0.622 INCHES NOMINAL IN |
| Connector End Design | FEMALE |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 1.313 INCHES NOMINAL SINGLE FLANGE IN |
| Adapter Length | 2.500 INCHES NOMINAL IN |
| Flange Connecting Hole Diameter | 0.144 INCHES NOMINAL SINGLE FLANGE SINGLE CONNECTION FACILITY IN |
| Waveguide Outside Height | 0.391 INCHES NOMINAL IN |
| Waveguide Outside Width | 0.702 INCHES NOMINAL IN |
| Flange Depth | 0.313 INCHES NOMINAL SINGLE FLANGE IN |
| Flange Outside Width | 1.313 INCHES NOMINAL SINGLE FLANGE IN |
| Waveguide Inside Height | 0.311 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY SINGLE 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 Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| P281B OPT13 | Agilent Technologies France (FRA) |
| P175SSC | 3dbm Co Inc Waveguide Group (USA) |
| 91377444 | Thales Sa (FRA) |
| 91377444 | Thales Deutschland Gmbh (DEU) |
| 352250024503 | Thales Nederland (NLD) |
| 1609-04 | Microlab/fxr Llc (USA) |
| P281B-013 PRIMARY | Keysight Technologies Inc (USA) |
| Reference | Meaning |
|---|---|
| 806334-1 | 5/2 Secondary reference U.S. Government activity |
| P-175-SSC | 5/9 Secondary reference Gould Inc Defense Systems Navcom Systems Div 3dbm Opns |
| 108344-1 | 5/9 Secondary reference Lexan Industries, Inc Dba Struthers Electronics Div Struthers Electronics |
| P281B OPTION 013 | 5/9 Secondary reference Hewlett-Packard Company Dba HP |
| P281B013 | 5/9 Secondary reference Hewlett-Packard Company Dba HP |
| P281B-013 | 3/9 Design control — primary reference Keysight Technologies, Inc. |
| 1609-04 | 5/9 Secondary reference Wavetronics Inc |
NSN 5985-00-004-0105 is a Adapter,waveguide, manufactured by Keysight Technologies Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-004-0105 has 7 manufacturer part numbers on file: P281B OPT13 (Agilent Technologies France), P175SSC (3dbm Co Inc Waveguide Group), 91377444 (Thales Sa), 91377444 (Thales Deutschland Gmbh), 352250024503 (Thales Nederland) and 2 more.
Key specifications for P281B-013: Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 0.394 INCHES NOMINAL SINGLE FLANGE IN; Flange Quantity: 1; Voltage Standing Wave Ratio: 1.25. 21 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 5985-00-004-0105 has DEMIL Code Q. 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.