The Coupler,directional, cataloged under National Stock Number 5985-00-124-5122, 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 Crane Electronics, Inc. Dba Signal Technology Div Olektron. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-124-5122 |
| Primary Part Number | 0-D3-20-136 |
| Item Name | Coupler,directional |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Crane Electronics, Inc. Dba Signal Technology Div Olektron |
| Status | ACTIVE |
| Usage Design | MAIN LINE AND SECONDARY LINE TERMINAL FITTING |
| Power Loss in Decibels | 20.0 |
| Design Type | BIDIRECTIONAL |
| Radio Frequency Rating | 635.0 MEGAHERTZ MINIMUM AND 765.0 MEGAHERTZ MAXIMUM |
| Unit Type | COAXIAL LINE |
| 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 |
|---|---|
| 0-D3-20-136 | Crane Electronics, Inc. Dba Signal Technology Div Olektron (USA) |
| CD-321-11-17 | Smiths Interconnect Americas, Inc. (USA) |
| Reference | Meaning |
|---|---|
| SM-A-753293 | 3/2 Design control — primary reference U.S. Government activity |
| 0-D3-20-136 | 5/9 Secondary reference Signal Technology Corporation Div Systems Operation |
| 1130000096 | 5/9 Secondary reference Stellant Pst Corp. Dba Stellant Pst Corp. |
| DC302 | 5/9 Secondary reference U.S. Government activity |
NSN 5985-00-124-5122 is a Coupler,directional, manufactured by Crane Electronics, Inc. Dba Signal Technology Div Olektron, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-124-5122 has 2 manufacturer part numbers on file: 0-D3-20-136 (Crane Electronics, Inc. Dba Signal Technology Div Olektron), CD-321-11-17 (Smiths Interconnect Americas, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5950-01-307-8172. Verify interchangeability with system specifications before substitution.
Key specifications for 0-D3-20-136: Overall Height: 0.600 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN; Usage Design: MAIN LINE AND SECONDARY LINE TERMINAL FITTING; Power Loss in Decibels: 20.0; Design Type: BIDIRECTIONAL. 5 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 5985-00-124-5122 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.