The Adapter,waveguide, cataloged under National Stock Number 5985-01-299-5951, 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. The record lists 3 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Item Name | Adapter,waveguide |
| FSC / FSG | 5985 — Antennas, Waveguides, and Related Equipment (FSG 59) |
| Manufacturers | Hewlett-Packard Nederland B.v. (CAGE H2950); Keysight Technologies Inc (CAGE 7ZXR5); Keysight Technologies Pty Ltd Keysight Technologies Australia (CAGE Z0ST5) |
| Parameter | Value |
|---|---|
| NSN | 5985-01-299-5951 |
| Primary Part Number | R281A |
| Item Name | Adapter,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Keysight Technologies Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| HP R 281 A | Hewlett-Packard Nederland B.v. (NLD) |
| R281A PRIMARY | Keysight Technologies Inc (USA) |
| R281A | Keysight Technologies Pty Ltd Keysight Technologies Australia (AUS) |
| Reference | Meaning |
|---|---|
| 10042838 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| R281A | 5/9 Secondary reference Hewlett-Packard Company Dba HP |
| AMI-R-281A | 5/9 Secondary reference Astro Microwave Inc |
| R281A | 5/9 Secondary reference Agilent Technologies Australia Pty Ltd |
| R281A | 3/9 Design control — primary reference Keysight Technologies, Inc. |
| HPR281A | 5/9 Secondary reference Hewlett-Packard Centre De Competences France |
NSN 5985-01-299-5951 is a Adapter,waveguide, manufactured by Keysight Technologies Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-299-5951 has 3 manufacturer part numbers on file: HP R 281 A (Hewlett-Packard Nederland B.v.), R281A (Keysight Technologies Inc), R281A (Keysight Technologies Pty Ltd Keysight Technologies Australia).
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 5985-01-299-5951 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.