The Coupler,directional, cataloged under National Stock Number 5985-01-183-6592, 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 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-183-6592 |
| Primary Part Number | TO-D4-20V/B |
| 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 |
| Overall Diameter | 0.363 INCHES NOMINAL IN |
| Precious Material | GOLD |
| Radio Frequency Rating | 2.0 MEGAHERTZ MINIMUM AND 250.0 MEGAHERTZ MAXIMUM |
| Unit Type | TRANSMISSION LINE |
| Precious Material and Location | EXTERNAL SURFACES GOLD |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| TO-D4-20V/B | Crane Electronics, Inc. Dba Signal Technology Div Olektron (USA) |
| Reference | Meaning |
|---|---|
| TO-D4-20V/B | 5/9 Secondary reference Signal Technology Corporation Div Systems Operation |
| 912566 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-01-183-6592 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 5985-01-183-6592 has 1 manufacturer part number on file: TO-D4-20V/B (Crane Electronics, Inc. Dba Signal Technology Div Olektron).
Key specifications for TO-D4-20V/B: Usage Design: MAIN LINE AND SECONDARY LINE TERMINAL FITTING; Power Loss in Decibels: 20.0; Design Type: BIDIRECTIONAL; Overall Diameter: 0.363 INCHES NOMINAL IN. 8 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.
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.