The Coupler,rotary,radio Frequency, cataloged under National Stock Number 5985-00-974-0030, 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 Northrop Grumman Systems Corporation. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5985-00-974-0030 |
| Primary Part Number | GC851A-1 |
| Item Name | Coupler,rotary,radio Frequency |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Radio Frequency Rating | 16.0 GIGAHERTZ MINIMUM AND 17.0 GIGAHERTZ MAXIMUM |
| Unit Type | WAVEGUIDE |
| Mounting Configuration | CIRCULAR FLANGE,1; RECTANGULAR FLANGE 1 |
| Material | ALUMINUM ALLOY AND STEEL CORROSION RESISTING |
| 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 |
|---|---|
| GC851A-1 | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 199-12500 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-00-974-0030 is a Coupler,rotary,radio Frequency, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-974-0030 has 1 manufacturer part number on file: GC851A-1 (Northrop Grumman Systems Corporation).
Key specifications for GC851A-1: Overall Height: 3.000 INCHES MINIMUM AND 3.080 INCHES MAXIMUM IN; Radio Frequency Rating: 16.0 GIGAHERTZ MINIMUM AND 17.0 GIGAHERTZ MAXIMUM; Overall Length: 3.065 INCHES MINIMUM AND 3.105 INCHES MAXIMUM IN; Overall Width: 2.735 INCHES MINIMUM AND 2.765 INCHES MAXIMUM IN. 4 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 5985-00-974-0030 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.