The Coupler,rotary,radio Frequency, cataloged under National Stock Number 5985-00-172-9156, 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 3 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-172-9156 |
| Primary Part Number | 2534651 |
| Item Name | Coupler,rotary,radio Frequency |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Diamond Antenna & Microwave Corporation |
| Status | ACTIVE |
| Unit Type | WAVEGUIDE |
| Mounting Configuration | FOUR 0.228 IN. DIA MTG HOLES ON 3.250 IN. DIA BOLT CIRCLE IN |
| Material | ALUMINUM ALLOY |
| 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 |
|---|---|
| 2534651 PRIMARY | Diamond Antenna & Microwave Corporation (USA) |
| D1C-18-746 | Diamond Antenna & Microwave Corporation (USA) |
| 2534651 | Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc (USA) |
| Reference | Meaning |
|---|---|
| 2534651 | 5/9 Secondary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| 2534651 | 5/9 Secondary reference U.S. Government activity |
NSN 5985-00-172-9156 is a Coupler,rotary,radio Frequency, manufactured by Diamond Antenna & Microwave Corporation, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-172-9156 has 3 manufacturer part numbers on file: 2534651 (Diamond Antenna & Microwave Corporation), D1C-18-746 (Diamond Antenna & Microwave Corporation), 2534651 (Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc).
Key specifications for 2534651: Overall Height: 5.000 INCHES NOMINAL IN; Overall Length: 4.510 INCHES NOMINAL IN; Overall Width: 4.000 INCHES NOMINAL IN; Unit Type: WAVEGUIDE. 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 5985-00-172-9156 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.