The Circulator,radio Frequency, cataloged under National Stock Number 5985-01-235-9528, 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 12 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 | 5985-01-235-9528 |
| Primary Part Number | FCW-1908/41535 |
| Item Name | Circulator,radio Frequency |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Merrimac Industries, Inc |
| Status | ACTIVE |
| Document Type | MILITARY SPECIFICATION |
| Length | 2.006 INCHES NOMINAL IN |
| Flange Quantity | 4 |
| Connection Method | COVER FLANGE |
| Flange Type | COVER |
| Flange Connecting Hole Diameter | 0.199 INCHES NOMINAL IN |
| Identification Designator | TYPE UG-407/U |
| Frequency Range Rating | +4.4 TO 5.0 GIGAHERTZ |
| Document Identification | MIL-F-3922 |
| Insertion Loss in Decibels | 0.2 |
| Flange Connection Facility Quantity | 8 |
| Width | 1.006 INCHES NOMINAL IN |
| 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 |
|---|---|
| FCW-1908/41535 PRIMARY | Merrimac Industries, Inc (USA) |
NSN 5985-01-235-9528 is a Circulator,radio Frequency, manufactured by Merrimac Industries, Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-235-9528 has 1 manufacturer part number on file: FCW-1908/41535 (Merrimac Industries, Inc).
Key specifications for FCW-1908/41535: Document Type: MILITARY SPECIFICATION; Length: 2.006 INCHES NOMINAL IN; Flange Quantity: 4; Connection Method: COVER FLANGE. 12 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.