The Attenuator,variable, cataloged under National Stock Number 5985-00-802-6063, 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 Shallco, Inc. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-802-6063 |
| Primary Part Number | A651 OR A505 |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Shallco, Inc |
| Status | ACTIVE |
| Impedance Rating in Ohms | 600.0 INPUT-OUTPUT |
| Mounting Facility Type and Quantity | 1 THREADED BUSHING |
| Overall Diameter | 1.750 INCHES NOMINAL IN |
| Overall Attenuation Range in Decibels | +0.0 TO 45.0 |
| Mounting Facility Screw Thread Series Designator | UNEF |
| Overall Attenuation Accuracy in Decibels | -1.125 TO 1.125 |
| Attenuation Per Step in Decibels | 5.0 |
| Attenuation Variation Method | STEPPED |
| Schematic Diagram Designator | UNBALANCED LADDER |
| Mounting Thread Quantity | 32 PER INCH |
| Mounting Facility Nominal Screw Thread Diameter | 0.375 INCHES IN |
| Application Design | AUDIO |
| Terminal Type and Quantity | 3 TAB, SOLDER LUG |
| Power Rating | 1.0 WATTS 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 |
| Part Number | Manufacturer |
|---|---|
| A651 OR A505 PRIMARY | Shallco, Inc (USA) |
| Reference | Meaning |
|---|---|
| C19-5A2 | 5/9 Secondary reference Shallco, Inc |
NSN 5985-00-802-6063 is a Attenuator,variable, manufactured by Shallco, Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-802-6063 has 1 manufacturer part number on file: A651 OR A505 (Shallco, Inc).
Key specifications for A651 OR A505: Impedance Rating in Ohms: 600.0 INPUT-OUTPUT; Mounting Facility Type and Quantity: 1 THREADED BUSHING; Overall Diameter: 1.750 INCHES NOMINAL IN; Overall Attenuation Range in Decibels: +0.0 TO 45.0. 15 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.