The Isolator,radio Frequency Reflect, cataloged under National Stock Number 5985-01-408-5172, 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 Sierra Microwave Technology, Llc. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-408-5172 |
| Primary Part Number | SM21318 |
| Item Name | Isolator,radio Frequency Reflect |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Sierra Microwave Technology, Llc |
| Status | ACTIVE |
| Controlling Agency | SANDERS |
| Trade Designation | CONNECTOR |
| Identifying Number | 294040+1 DRAWING NO. |
| Flange Connecting Hole Diameter | 0.085 INCHES NOMINAL IN |
| Connector Quantity | 3 |
| Frequency Range Rating | +6.0 TO 8.0 GIGAHERTZ |
| Flange Connecting Hole Spacing | SPACED ON 0.585 IN. BEWTEEN CNTRS IN |
| Flange Connection Facility Quantity | 2 |
| Flange Connecting Hole Thread Size | 0.086-56 |
| 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 |
|---|---|
| SM21318 | Sierra Microwave Technology, Llc (USA) |
| Reference | Meaning |
|---|---|
| 294040P1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-01-408-5172 is a Isolator,radio Frequency Reflect, manufactured by Sierra Microwave Technology, Llc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-408-5172 has 1 manufacturer part number on file: SM21318 (Sierra Microwave Technology, Llc).
Key specifications for SM21318: Overall Height: 0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN; Controlling Agency: SANDERS; Trade Designation: CONNECTOR; Identifying Number: 294040+1 DRAWING NO.. 9 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.