The Attenuator,fixed, cataloged under National Stock Number 5985-01-628-1013, 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 Spectrum Control, Inc.. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5985-01-628-1013 |
| Primary Part Number | 18N-20 |
| Item Name | Attenuator,fixed |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Spectrum Control, Inc. |
| Status | ACTIVE |
| Body Style | ROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE |
| Overall Diameter | 0.82 INCHES NOMINAL IN |
| Rf Signal Attenuation in Decibels | 20.0 |
| Environmental Attribute Code | NON-CADMIUM PRODUCT AND HEXAVALENT CHROMIUM ALTERNATIVE AND NON-LEAD ALTERNATIVE PRODUCTS |
| Application Design | WAVEGUIDE |
| Material | STEEL CORROSION RESISTING BODY |
| Terminal Type and Quantity | 2 STANDARD TUBE BASE |
| 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 |
|---|---|
| 18N-20 PRIMARY | Spectrum Control, Inc. (USA) |
| Reference | Meaning |
|---|---|
| SA18N-20 | 3/9 Design control — primary reference Spectrum Control, Inc. |
NSN 5985-01-628-1013 is a Attenuator,fixed, manufactured by Spectrum Control, Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-628-1013 has 1 manufacturer part number on file: 18N-20 (Spectrum Control, Inc.).
Key specifications for 18N-20: Body Style: ROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE; Overall Diameter: 0.82 INCHES NOMINAL IN; Rf Signal Attenuation in Decibels: 20.0; Overall Length: 1.77 INCHES NOMINAL IN. 7 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.