The Coupler,directional, cataloged under National Stock Number 5985-01-540-4944, 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 Frontgrade Technologies Inc.. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-540-4944 |
| Primary Part Number | 54112-14O |
| Item Name | Coupler,directional |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Frontgrade Technologies Inc. |
| Status | ACTIVE |
| Unit Type | WAVEGUIDE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 54112-14O PRIMARY | Frontgrade Technologies Inc. (USA) |
| Reference | Meaning |
|---|---|
| 54112D-5S | 5/9 Secondary reference Central Steel & Wire Company |
| 1810021 | D/9 Drawing number reference only Northrop Grumman Systems Corporation |
| 54112-14D | 5/9 Secondary reference Frontgrade Technologies Inc. |
NSN 5985-01-540-4944 is a Coupler,directional, manufactured by Frontgrade Technologies Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-540-4944 has 1 manufacturer part number on file: 54112-14O (Frontgrade Technologies Inc.).
Key specifications for 54112-14O: Overall Height: 1.880 INCHES NOMINAL IN; Overall Length: 4.980 INCHES MINIMUM AND 5.020 INCHES MAXIMUM IN; Overall Width: 1.380 INCHES NOMINAL IN; Unit Type: WAVEGUIDE. 1 specification is 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 5985-01-540-4944 has DEMIL Code D. 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.