The Attenuator,variable, cataloged under National Stock Number 5985-00-642-5834, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-642-5834 |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Status | ACTIVE |
| Impedance Rating in Ohms | 50.0 INPUT-OUTPUT |
| Mounting Facility Type and Quantity | 4 THREADED HOLE(S) |
| Frequency Range | 500.000 MEGAHERTZ MINIMUM AND 1.500 GIGAHERTZ MAXIMUM |
| Body Style | COAXIAL TYPE |
| Mounting Facility Pattern | FOUR POSITION RECTANGULAR |
| Adjustment Device Type and Quantity | 1 SLOTTED SCREW |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 3.125 INCHES NOMINAL IN |
| Overall Attenuation Range in Decibels | +0.0 TO 12.0 |
| Mounting Facility Screw Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Overall Attenuation Accuracy in Decibels | -0.50 TO 0.50 |
| Attenuation Per Step in Decibels | 3.0 |
| Attenuation Variation Method | STEPPED |
| Mounting Thread Quantity | 32 PER INCH |
| Mounting Facility Nominal Screw Thread Diameter | 0.164 INCHES IN |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 2.875 INCHES NOMINAL IN |
| Application Design | TRANSMISSION LINE |
| Terminal Type and Quantity | 2 TAB, SOLDER LUG |
| Power Rating | 0.25 MILLIWATTS AVERAGE |
| Step Position Quantity | 9 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 2171-1500 | 5/9 Secondary reference Kama Instrument Corp |
| 757-200 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-00-642-5834 is a Attenuator,variable, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 6625-00-690-4989, 1355-00-915-0059. Verify interchangeability with system specifications before substitution.
Key specifications for 5985-00-642-5834: Impedance Rating in Ohms: 50.0 INPUT-OUTPUT; Mounting Facility Type and Quantity: 4 THREADED HOLE(S); Overall Height: 4.122 INCHES NOMINAL IN; Frequency Range: 500.000 MEGAHERTZ MINIMUM AND 1.500 GIGAHERTZ MAXIMUM. 19 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.