The Attenuator,variable, cataloged under National Stock Number 5985-00-810-0753, 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 Westinghouse Electric Corp. Government technical data includes 26 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-810-0753 |
| Primary Part Number | 335C993H01 |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| Shaft Type | ROUND |
| Insertion Loss at Minimum Attenuation in Maximum Decibels | 0.5 |
| Impedance Rating in Ohms | 50.0 INPUT-OUTPUT |
| Mounting Facility Type and Quantity | 4 THREADED HOLE(S) |
| Frequency Range | 125.000 MEGAHERTZ MINIMUM AND 225.000 MEGAHERTZ MAXIMUM |
| Shaft Diameter | 0.248 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Body Style | COAXIAL TYPE |
| Mounting Facility Pattern | FOUR POSITION RECTANGULAR |
| Adjustment Device Type and Quantity | 1 SHAFT |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 1.485 INCHES MINIMUM AND 1.515 INCHES MAXIMUM IN |
| Overall Attenuation Range in Decibels | +39.0 TO 43.0 |
| Mounting Facility Screw Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Scale Linearity | LINEAR |
| Attenuation Per Step in Decibels | 0.5 |
| Attenuation Variation Method | STEPPED |
| Connector Manufacturer Part Number | UG-447-U |
| Mounting Thread Quantity | 32 PER INCH |
| Shaft Length | 1.000 INCHES NOMINAL IN |
| Connector Manufacturer Code | 97942 |
| Scale Division Quantity | 8 |
| Mounting Facility Nominal Screw Thread Diameter | 0.164 INCHES IN |
| Operating Temp Range | -55.0 TO 120.0 CELSIUS DEGC |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 1.485 INCHES MINIMUM AND 1.515 INCHES MAXIMUM IN |
| Application Design | TRANSMISSION LINE |
| Terminal Type and Quantity | 2 CONNECTOR, COAXIAL, MALE |
| Power Rating | 500.0 MILLIWATTS PEAK |
| 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 |
|---|---|
| 335C993H01 | Westinghouse Electric Corp (USA) |
| 335C993H01 | Telonic Berkeley, Inc. Dba Telonic Berkeley (USA) |
| Reference | Meaning |
|---|---|
| 335C993H01 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-00-810-0753 is a Attenuator,variable, manufactured by Westinghouse Electric Corp, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-810-0753 has 2 manufacturer part numbers on file: 335C993H01 (Westinghouse Electric Corp), 335C993H01 (Telonic Berkeley, Inc. Dba Telonic Berkeley).
Key specifications for 335C993H01: Shaft Type: ROUND; Insertion Loss at Minimum Attenuation in Maximum Decibels: 0.5; Impedance Rating in Ohms: 50.0 INPUT-OUTPUT; Mounting Facility Type and Quantity: 4 THREADED HOLE(S). 26 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.