The Circulator,radio Frequency, cataloged under National Stock Number 5985-01-447-4157, 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 Mesl Microwave Limited. Government technical data includes 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5985-01-447-4157 |
| Primary Part Number | 18D25216 |
| Item Name | Circulator,radio Frequency |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Mesl Microwave Limited |
| Status | ACTIVE |
| Flange Quantity | 2 |
| Connection Method | FLANGE |
| Insertion Loss in Decibels | 0.3 |
| 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 |
|---|---|
| 18D25216 | Mesl Microwave Limited (GBR) |
| Reference | Meaning |
|---|---|
| 8K405-S001 | 3/9 Design control — primary reference U.S. Government activity |
| 2711351-1 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5985-01-447-4157 is a Circulator,radio Frequency, manufactured by Mesl Microwave Limited, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-447-4157 has 1 manufacturer part number on file: 18D25216 (Mesl Microwave Limited).
Key specifications for 18D25216: Overall Height: 0.750 INCHES NOMINAL IN; Flange Quantity: 2; Connection Method: FLANGE; Overall Length: 1.310 INCHES NOMINAL IN. 3 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 5985-01-447-4157 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.