The Attenuator,variable, cataloged under National Stock Number 5985-00-679-0722, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-679-0722 |
| Primary Part Number | 3421 |
| 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 | 2 THREADED HOLE(S) |
| Frequency Range | 0.000 KILOHERTZ MINIMUM AND 50.000 KILOHERTZ MAXIMUM |
| Overall Diameter | 0.344 INCHES NOMINAL IN |
| Overall Attenuation Range in Decibels | +0.0 TO 100.0 |
| Mounting Facility Screw Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Overall Attenuation Accuracy in Decibels | -5.00 TO 5.00 |
| Attenuation Per Step in Decibels | 10.0 |
| Attenuation Variation Method | STEPPED |
| Mounting Thread Quantity | 32 PER INCH |
| Mounting Facility Nominal Screw Thread Diameter | 0.164 INCHES IN |
| Application Design | TRANSMISSION LINE |
| Terminal Type and Quantity | 3 TAB, SOLDER LUG |
| Power Rating | 1.5 WATTS AVERAGE |
| Step Position Quantity | 10 |
| 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 |
|---|---|
| 3421 PRIMARY | Shallco, Inc (USA) |
NSN 5985-00-679-0722 is a Attenuator,variable, manufactured by Shallco, Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-679-0722 has 1 manufacturer part number on file: 3421 (Shallco, Inc).
Key specifications for 3421: Impedance Rating in Ohms: 600.0 INPUT-OUTPUT; Mounting Facility Type and Quantity: 2 THREADED HOLE(S); Frequency Range: 0.000 KILOHERTZ MINIMUM AND 50.000 KILOHERTZ MAXIMUM; Overall Diameter: 0.344 INCHES NOMINAL IN. 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.