The Attenuator,variable, cataloged under National Stock Number 5985-00-448-5474, 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 Lockheed Martin Corporation Div Rms - Mitchel Field. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-448-5474 |
| Primary Part Number | 1037776REVA |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Lockheed Martin Corporation Div Rms - Mitchel Field |
| Status | ACTIVE |
| Waveguide Flange Type | COVER |
| Mounting Facility Type and Quantity | 8 TERMINAL |
| Frequency Range | 3.950 GIGAHERTZ MINIMUM AND 5.850 GIGAHERTZ MAXIMUM |
| Body Style | WAVEGUIDE TYPE |
| Mounting Facility Pattern | EIGHT POSITION CIRCULAR |
| Adjustment Device Type and Quantity | 1 KNOB |
| Overall Attenuation Range in Decibels | +0.0 TO 45.0 |
| Voltage Standing Wave Ratio | 1.15 |
| Waveguide Flange Designation | UG-149/U |
| Unthreaded Mounting Hole Diameter | 0.219 INCHES NOMINAL IN |
| Attenuation Variation Method | CONTINUOUS |
| Bolt Circle Diameter | 3.250 INCHES NOMINAL IN |
| Application Design | WAVEGUIDE |
| Terminal Type and Quantity | 2 FLANGE |
| Power Rating | 1.0 WATTS AVERAGE |
| 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 |
|---|---|
| 170B | Telephonics Corp/prd Instruments (USA) |
| 1037776REVA PRIMARY | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| Reference | Meaning |
|---|---|
| 170B | 5/9 Secondary reference Peraton Inc |
NSN 5985-00-448-5474 is a Attenuator,variable, manufactured by Lockheed Martin Corporation Div Rms - Mitchel Field, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-448-5474 has 2 manufacturer part numbers on file: 170B (Telephonics Corp/prd Instruments), 1037776REVA (Lockheed Martin Corporation Div Rms - Mitchel Field).
2 possible matches (shared part number, not a government interchangeability claim): 3010-01-058-2018, 5310-01-163-0506. Verify interchangeability with system specifications before substitution.
Key specifications for 1037776REVA: Waveguide Flange Type: COVER; Mounting Facility Type and Quantity: 8 TERMINAL; Overall Height: 3.625 INCHES NOMINAL IN; Frequency Range: 3.950 GIGAHERTZ MINIMUM AND 5.850 GIGAHERTZ MAXIMUM. 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.