The Isolator,radio Frequency Reflect, cataloged under National Stock Number 5985-00-950-7670, 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. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5985-00-950-7670 |
| Primary Part Number | 1KUL4 |
| Item Name | Isolator,radio Frequency Reflect |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Raytheon Company |
| Status | ACTIVE |
| FSC Application Data | ANTENNA8RECEIVER,MRADAR9AIRBORNE |
| Flange Quantity | 2 |
| Overall Diameter | 1.750 INCHES NOMINAL IN |
| Flange Type | CHOKE |
| Diameter | 1.750 INCHES NOMINAL IN |
| Flange Connecting Hole Diameter | 0.0937 INCHES NOMINAL IN |
| Frequency Range Rating | +16000.0 TO 17000.0 MEGAHERTZ |
| Flange Connecting Hole Spacing | SPACED ON 0.995 IN. BY 1.016 IN. MTG CENTERS IN |
| Flange Connection Facility Quantity | 2 |
| Flange Connection Facility Quantity | 4 |
| Flange Connecting Hole Thread Size | 6-32 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
NSN 5985-00-950-7670 is a Isolator,radio Frequency Reflect, manufactured by Raytheon Company, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-950-7670 has 2 manufacturer part numbers on file: 1KUL4 (Raytheon Company), 1KUL4 (Raytheon Company Div Corp).
Key specifications for 1KUL4: FSC Application Data: ANTENNA8RECEIVER,MRADAR9AIRBORNE; Flange Quantity: 2; Overall Diameter: 1.750 INCHES NOMINAL IN; Flange Type: CHOKE. 11 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 5985-00-950-7670 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.