The Attenuator,variable, cataloged under National Stock Number 5985-01-683-3149, 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 Herley Industries, Inc Dba Stewart Warner Electronics Div Stewart Warner Electronics. Government technical data includes 11 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 | 5985-01-683-3149 |
| Primary Part Number | D1952 |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Herley Industries, Inc Dba Stewart Warner Electronics Div Stewart Warner Electronics |
| Status | ACTIVE |
| Insertion Loss at Minimum Attenuation in Maximum Decibels | 2.0 |
| Impedance Rating in Ohms | 10000.0 INPUT |
| Mounting Facility Type and Quantity | 2 UNTHREADED HOLE(S) |
| Frequency Range | 2.0 GIGAHERTZ MINIMUM AND 4.0 GIGAHERTZ MAXIMUM |
| Mounting Facility Pattern | TWO POSITION DIAGONAL |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 1.475 INCHES NOMINAL IN |
| Unthreaded Mounting Hole Diameter | 0.104 INCHES NOMINAL IN |
| Body Length | 1.67 INCHES NOMINAL IN |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 1.2 INCHES NOMINAL IN |
| Terminal Type and Quantity | 2 CONNECTOR, COAXIAL, FEMALE AND 4 TAB, SOLDER LUG |
| Coaxial Connector Series Designation | SMA |
| 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 |
|---|---|
| D1952 PRIMARY | Herley Industries, Inc Dba Stewart Warner Electronics Div Stewart Warner Electronics (USA) |
NSN 5985-01-683-3149 is a Attenuator,variable, manufactured by Herley Industries, Inc Dba Stewart Warner Electronics Div Stewart Warner Electronics, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-683-3149 has 1 manufacturer part number on file: D1952 (Herley Industries, Inc Dba Stewart Warner Electronics Div Stewart Warner Electronics).
Key specifications for D1952: Insertion Loss at Minimum Attenuation in Maximum Decibels: 2.0; Impedance Rating in Ohms: 10000.0 INPUT; Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S); Overall Height: 0.5 INCHES NOMINAL IN. 11 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.