The Coupler,directional, cataloged under National Stock Number 5985-01-585-8826, 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 I. F. Engineering, Corp.. Government technical data includes 4 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-585-8826 |
| Primary Part Number | C4-40-20-512-S-100W |
| Item Name | Coupler,directional |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | I. F. Engineering, Corp. |
| Status | ACTIVE |
| Design Type | UNIDIRECTIONAL |
| Radio Frequency Rating | 20.0 MEGAHERTZ MINIMUM AND 512.0 MEGAHERTZ MAXIMUM |
| Specification/standard Data | 96906-MIL-STD-100 GOVERNMENT STANDARD |
| Unit Type | COAXIAL LINE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| C4-40-20-512-S-100W PRIMARY | I. F. Engineering, Corp. (USA) |
NSN 5985-01-585-8826 is a Coupler,directional, manufactured by I. F. Engineering, Corp., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-585-8826 has 1 manufacturer part number on file: C4-40-20-512-S-100W (I. F. Engineering, Corp.).
Key specifications for C4-40-20-512-S-100W: Design Type: UNIDIRECTIONAL; Radio Frequency Rating: 20.0 MEGAHERTZ MINIMUM AND 512.0 MEGAHERTZ MAXIMUM; Overall Length: 2.375 INCHES NOMINAL IN; Overall Width: 1.500 INCHES NOMINAL IN. 4 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 5985-01-585-8826 has DEMIL Code B. 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.