The Coupler,directional, cataloged under National Stock Number 5985-01-156-8959, 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 Merrimac Industries, Inc. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5985-01-156-8959 |
| Primary Part Number | CRM-10-500/28248 |
| Item Name | Coupler,directional |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Merrimac Industries, Inc |
| Status | ACTIVE |
| Terminal Fitting Controlling Agency | DEPARTMENT OF DEFENSE |
| Usage Design | MAIN LINE AND SECONDARY LINE TERMINAL FITTING |
| Design Type | BIDIRECTIONAL |
| Radio Frequency Rating | 0.03 GIGAHERTZ MINIMUM AND 1.00 GIGAHERTZ MAXIMUM |
| Unit Type | COAXIAL LINE OR TRANSMISSION LINE |
| 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 |
|---|---|
| CRM-10-500/28248 | Merrimac Industries, Inc (USA) |
| Reference | Meaning |
|---|---|
| 926251-1B | 3/2 Design control — primary reference U.S. Government activity |
| CH 650 | 5/9 Secondary reference U.S. Government activity |
NSN 5985-01-156-8959 is a Coupler,directional, manufactured by Merrimac Industries, Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-156-8959 has 1 manufacturer part number on file: CRM-10-500/28248 (Merrimac Industries, Inc).
Key specifications for CRM-10-500/28248: Overall Height: 0.750 INCHES NOMINAL IN; Terminal Fitting Controlling Agency: DEPARTMENT OF DEFENSE; Usage Design: MAIN LINE AND SECONDARY LINE TERMINAL FITTING; 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.
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.