The Attenuator,fixed, cataloged under National Stock Number 5985-01-645-8975, 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 Textron Aviation Inc. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-645-8975 |
| Primary Part Number | 25-7SF7-317 |
| Item Name | Attenuator,fixed |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Textron Aviation Inc |
| Status | ACTIVE |
| Body Style | RECTANGULAR TERMINAL/TERMINALS ON THREE SURFACES |
| Input Impedance Rating in Ohms | 50.0 |
| Rf Signal Attenuation in Decibels | 10.0 |
| Schematic Diagram Designator | BALANCED "H" BRIDGED |
| Operating Temp Range | -55.0 TO 125.0 CELSIUS DEGC |
| Application Design | AUDIO |
| Power Rating | 100.0 WATTS PEAK |
| Terminal Type and Quantity | 3 BINDING POST |
| Output Impedance Rating in Ohms | 50.0 |
| 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 |
|---|---|
| 25-7SF7-317 PRIMARY | Textron Aviation Inc (USA) |
| Reference | Meaning |
|---|---|
| 25-7SF7-317 | 3/9 Design control — primary reference Beechcraft Corporation Dba Textron Aviation |
NSN 5985-01-645-8975 is a Attenuator,fixed, manufactured by Textron Aviation Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-645-8975 has 1 manufacturer part number on file: 25-7SF7-317 (Textron Aviation Inc).
Key specifications for 25-7SF7-317: Overall Height: 0.020 INCHES MAXIMUM IN; Body Style: RECTANGULAR TERMINAL/TERMINALS ON THREE SURFACES; Input Impedance Rating in Ohms: 50.0; Rf Signal Attenuation in Decibels: 10.0. 9 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.