The Coupler,directional, cataloged under National Stock Number 5985-01-309-4243, 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 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-309-4243 |
| Primary Part Number | 8481A OPT 8481A-H51 |
| Item Name | Coupler,directional |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Keysight Technologies Inc |
| Status | ACTIVE |
| Design Type | UNIDIRECTIONAL |
| Unit Type | TRANSMISSION LINE |
| 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 |
|---|---|
| 8481A OPT 8481A-H51 PRIMARY | Keysight Technologies Inc (USA) |
| Reference | Meaning |
|---|---|
| 8481A-H51 | 5/9 Secondary reference Keysight Technologies, Inc. |
| 8481A OPT H51 | 5/9 Secondary reference Hewlett-Packard Company Dba HP |
| 6011055-010 | 5/9 Secondary reference Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc |
| 8481A OPT 8481A-H51 | 3/9 Design control — primary reference Keysight Technologies, Inc. |
NSN 5985-01-309-4243 is a Coupler,directional, manufactured by Keysight Technologies Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-309-4243 has 1 manufacturer part number on file: 8481A OPT 8481A-H51 (Keysight Technologies Inc).
Key specifications for 8481A OPT 8481A-H51: Overall Height: 1.200 INCHES NOMINAL IN; Design Type: UNIDIRECTIONAL; Overall Length: 5.900 INCHES NOMINAL IN; Overall Width: 1.500 INCHES NOMINAL IN. 2 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 5985-01-309-4243 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.