The Coupler,directional, cataloged under National Stock Number 5985-01-440-1781, 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 Caes Systems Llc. Government technical data includes 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-440-1781 |
| Primary Part Number | CA-831 |
| Item Name | Coupler,directional |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Caes Systems Llc |
| Status | ACTIVE |
| Design Type | UNIDIRECTIONAL |
| Radio Frequency Rating | 8.0 GIGAHERTZ MINIMUM AND 16.0 GIGAHERTZ MAXIMUM |
| Unit Type | COAXIAL 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 |
|---|---|
| CA-831 PRIMARY | Caes Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| SC5985-0159-1 | 7/9 Vendor item drawing reference Drs Icas, Llc |
NSN 5985-01-440-1781 is a Coupler,directional, manufactured by Caes Systems Llc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-440-1781 has 1 manufacturer part number on file: CA-831 (Caes Systems Llc).
Key specifications for CA-831: Design Type: UNIDIRECTIONAL; Radio Frequency Rating: 8.0 GIGAHERTZ MINIMUM AND 16.0 GIGAHERTZ MAXIMUM; Unit Type: COAXIAL LINE. 3 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 5985-01-440-1781 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.