The Coupler,directional, cataloged under National Stock Number 5985-01-073-9678, 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 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5985-01-073-9678 |
| Primary Part Number | AMC0637 |
| Item Name | Coupler,directional |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Frontgrade Technologies Inc. |
| Status | ACTIVE |
| Design Type | BIDIRECTIONAL |
| Unit Type | WAVEGUIDE AND 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 |
|---|---|
| AMC0637 PRIMARY | Frontgrade Technologies Inc. (USA) |
| Reference | Meaning |
|---|---|
| MA56608 | 5/9 Secondary reference U.S. Government activity |
| 259415 | 5/9 Secondary reference Atlantic Microwave Corporation Div Cobham Electronic Systems |
| 259415 | 5/9 Secondary reference Frontgrade Technologies Inc. |
| 259415 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 5985-01-073-9678 is a Coupler,directional, manufactured by Frontgrade Technologies Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-073-9678 has 1 manufacturer part number on file: AMC0637 (Frontgrade Technologies Inc.).
Key specifications for AMC0637: Design Type: BIDIRECTIONAL; Overall Length: 6.659 INCHES NOMINAL IN; Overall Width: 4.200 INCHES NOMINAL IN; Unit Type: WAVEGUIDE AND COAXIAL LINE. 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 5985-01-073-9678 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.