The Isolator,radio Frequency Reflect, cataloged under National Stock Number 5985-01-157-4542, 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 Raytheon Company Div Rmd Strategic. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5985-01-157-4542 |
| Primary Part Number | 721788-1 |
| Item Name | Isolator,radio Frequency Reflect |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Raytheon Company Div Rmd Strategic |
| Status | ACTIVE |
| Document Type | MILITARY SPECIFICATION |
| Length | 0.340 INCHES NOMINAL IN |
| Flange Quantity | 2 |
| Flange Type | COVER |
| Flange Connecting Hole Diameter | 0.169 INCHES NOMINAL IN |
| Identification Designator | TYPE UG-1493/U |
| Connector Quantity | 2 |
| Frequency Range Rating | +7.0 TO 11.0 GIGAHERTZ |
| Flange Connecting Hole Spacing | SPACED ON 1.280 IN. BY 1.340 IN. MTG CTRS IN |
| Document Identification | MIL-F-3922/70A A |
| Flange Connection Facility Quantity | 4 |
| Width | 0.170 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
NSN 5985-01-157-4542 is a Isolator,radio Frequency Reflect, manufactured by Raytheon Company Div Rmd Strategic, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-157-4542 has 2 manufacturer part numbers on file: 721788-1 (Raytheon Company Div Rmd Strategic), XHG10 (Pamtech Inc).
Key specifications for 721788-1: Overall Height: 3.250 INCHES NOMINAL IN; Document Type: MILITARY SPECIFICATION; Length: 0.340 INCHES NOMINAL IN; Flange Quantity: 2. 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.
NSN 5985-01-157-4542 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.