The Isolator,radio Frequency Reflect, cataloged under National Stock Number 5985-00-258-4976, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-258-4976 |
| Item Name | Isolator,radio Frequency Reflect |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Status | ACTIVE |
| Connector Quantity | 2 |
| Frequency Range Rating | +9.55 TO 9.88 GIGAHERTZ |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 628571 | 5/9 Secondary reference U.S. Government activity |
| 927202-1B | 5/2 Secondary reference U.S. Government activity |
| 101101916 | 3/9 Design control — primary reference Crane Electronics, Inc. Dba Stc Microwave Systems Div Signal Technology Corporation |
| MA7K822B | 5/9 Secondary reference U.S. Government activity |
NSN 5985-00-258-4976 is a Isolator,radio Frequency Reflect, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5990-00-767-0893. Verify interchangeability with system specifications before substitution.
Key specifications for 5985-00-258-4976: Overall Height: 0.795 INCHES NOMINAL IN; Overall Width: 0.500 INCHES NOMINAL IN; Connector Quantity: 2; Frequency Range Rating: +9.55 TO 9.88 GIGAHERTZ. 2 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 5985-00-258-4976 has DEMIL Code Q. 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.