The Attenuator,fixed, cataloged under National Stock Number 5985-01-299-9258, 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 Scientific Components Corp Dba Mini-Circuits. Government technical data includes 16 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 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 | 5985-01-299-9258 |
| Primary Part Number | CAT-5 |
| Item Name | Attenuator,fixed |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Scientific Components Corp Dba Mini-Circuits |
| Status | ACTIVE |
| Frequency Range | 0.000 HERTZ MINIMUM AND 1500.000 MEGAHERTZ MAXIMUM |
| Body Style | ROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE |
| Overall Diameter | 1.540 INCHES NOMINAL IN |
| Voltage Standing Wave Ratio | 1.30 AND 1.50 AND 1.70 |
| Input Impedance Rating in Ohms | 50.0 |
| Mounting Method | CONNECTOR |
| Rf Signal Attenuation in Decibels | 5.03 |
| Attenuation Accuracy in Decibels | -1.00 TO 1.00 |
| Surface Treatment | NICKEL BODY |
| Connection Type Per Function | FEMALE INPUT AND MALE OUTPUT |
| Voltage Standing Wave Ratio Frequency Range | +0.0 TO 6.0 MEGAHERTZ |
| Application Design | TRANSMISSION LINE |
| Material | COPPER ALLOY BODY |
| Terminal Type and Quantity | 2 CONNECTOR |
| Output Impedance Rating in Ohms | 50.0 |
| Coaxial Connector Series Designation | N |
| 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 |
|---|---|
| CAT-5 PRIMARY | Scientific Components Corp Dba Mini-Circuits (USA) |
NSN 5985-01-299-9258 is a Attenuator,fixed, manufactured by Scientific Components Corp Dba Mini-Circuits, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-299-9258 has 1 manufacturer part number on file: CAT-5 (Scientific Components Corp Dba Mini-Circuits).
1 possible match (shared part number, not a government interchangeability claim): 3439-01-642-4724. Verify interchangeability with system specifications before substitution.
Key specifications for CAT-5: Frequency Range: 0.000 HERTZ MINIMUM AND 1500.000 MEGAHERTZ MAXIMUM; Body Style: ROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE; Overall Diameter: 1.540 INCHES NOMINAL IN; Voltage Standing Wave Ratio: 1.30 AND 1.50 AND 1.70. 16 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.