The Attenuator,variable, cataloged under National Stock Number 5985-00-252-7663, 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 Meggitt (new Hampshire), Inc. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-252-7663 |
| Primary Part Number | A2235-1-500OHM |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Meggitt (new Hampshire), Inc |
| Status | ACTIVE |
| Impedance Rating in Ohms | 500.0 INPUT-OUTPUT |
| Mounting Facility Type and Quantity | 2 THREADED HOLE(S) |
| Frequency Range | 0.000 KILOHERTZ MINIMUM AND 20.000 KILOHERTZ MAXIMUM |
| Mounting Facility Pattern | TWO POSITION IN-LINE |
| Adjustment Device Type and Quantity | 1 KNOB |
| Overall Diameter | 2.781 INCHES NOMINAL IN |
| Overall Attenuation Range in Decibels | +0.0 TO 20.0 |
| Mounting Facility Screw Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Overall Attenuation Accuracy in Decibels | -1.00 TO 1.00 |
| Attenuation Per Step in Decibels | 1.0 |
| Attenuation Variation Method | STEPPED |
| Distance Between Mounting Facility Centers | 1.500 INCHES NOMINAL IN |
| Schematic Diagram Designator | BRIDGED "T" |
| Mounting Thread Quantity | 32 PER INCH |
| Body Length | 3.000 INCHES NOMINAL IN |
| Mounting Facility Nominal Screw Thread Diameter | 0.164 INCHES IN |
| Terminal Type and Quantity | 3 TAB, SOLDER LUG |
| Step Position Quantity | 20 |
| 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 |
|---|---|
| T324A | Shallco, Inc (USA) |
| A2235-1-500OHM PRIMARY | Meggitt (new Hampshire), Inc (USA) |
| Reference | Meaning |
|---|---|
| T324F | 5/9 Secondary reference Meggitt (new Hampshire), Inc |
| T324F | 5/9 Secondary reference Shallco, Inc |
NSN 5985-00-252-7663 is a Attenuator,variable, manufactured by Meggitt (new Hampshire), Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-252-7663 has 2 manufacturer part numbers on file: T324A (Shallco, Inc), A2235-1-500OHM (Meggitt (new Hampshire), Inc).
Key specifications for A2235-1-500OHM: Impedance Rating in Ohms: 500.0 INPUT-OUTPUT; Mounting Facility Type and Quantity: 2 THREADED HOLE(S); Frequency Range: 0.000 KILOHERTZ MINIMUM AND 20.000 KILOHERTZ MAXIMUM; Mounting Facility Pattern: TWO POSITION IN-LINE. 18 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.