The Coupler,rotary,radio Frequency, cataloged under National Stock Number 5985-00-013-9452, 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 Diamond Antenna & Microwave Corporation. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-013-9452 |
| Primary Part Number | 2120F |
| Item Name | Coupler,rotary,radio Frequency |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Diamond Antenna & Microwave Corporation |
| Status | ACTIVE |
| Overall Diameter | 1.625 INCHES NOMINAL IN |
| Precious Material | RHODIUM AND SILVER |
| Input Impedance Rating in Ohms | 50.0 |
| Radio Frequency Rating | 0.5 GIGAHERTZ MINIMUM AND 8.1 GIGAHERTZ MAXIMUM |
| Unit Type | COAXIAL LINE |
| Mounting Configuration | FIVE MTG HOLES 0.156 IN. DIA EQUALLY SPACED ON 0.250 IN. DIA BOLT CIRCLE IN |
| Precious Material and Location | BODY RHODIUM AND BODY SILVER |
| Material | COPPER ALLOY |
| Output Impedance Rating in Ohms | 50.0 |
| 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 |
|---|---|
| 2120F PRIMARY | Diamond Antenna & Microwave Corporation (USA) |
| Reference | Meaning |
|---|---|
| 20830 | 7/2 Vendor item drawing reference L3harris Technologies, Inc. |
NSN 5985-00-013-9452 is a Coupler,rotary,radio Frequency, manufactured by Diamond Antenna & Microwave Corporation, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-013-9452 has 1 manufacturer part number on file: 2120F (Diamond Antenna & Microwave Corporation).
4 possible matches (shared part number, not a government interchangeability claim): 4820-00-036-1171, 6220-01-383-9929, 5315-01-722-1346. Verify interchangeability with system specifications before substitution.
Key specifications for 2120F: Overall Diameter: 1.625 INCHES NOMINAL IN; Precious Material: RHODIUM AND SILVER; Input Impedance Rating in Ohms: 50.0; Radio Frequency Rating: 0.5 GIGAHERTZ MINIMUM AND 8.1 GIGAHERTZ MAXIMUM. 9 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 5985-00-013-9452 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.