The Mast Section, cataloged under National Stock Number 5985-00-682-7186, 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 Federal Aviation Administration Specifications Promulgated by Federal Aviation Administration Aeronautical Center. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 5985-00-682-7186 |
| Primary Part Number | B50401 |
| Item Name | Mast Section |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Federal Aviation Administration Specifications Promulgated by Federal Aviation Administration Aeronautical Center |
| Status | ACTIVE |
| Maximum Height | 8.604 FEET FT |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT |
| Section Quantity | 2 |
| Top Diameter | 4.000 INCHES NOMINAL IN |
| Nondefinitive Spec/std Data | B50401 DRAWING NUMBER |
| Base Diameter | 10.000 INCHES NOMINAL IN |
| Surface Treatment | ANODIZE |
| Material | ALUMINUM |
| Construction | SECTIONALIZED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | N |
| Part Number | Manufacturer |
|---|---|
| B50401 | Federal Aviation Administration Specifications Promulgated by Federal Aviation Administration Aeronautical Center (USA) |
| Reference | Meaning |
|---|---|
| FAAR1224 | 4/1 Identification reference Federal Aviation Administration Specifications Promulgated by Federal Aviation Administration Aeronautical Center |
NSN 5985-00-682-7186 is a Mast Section, manufactured by Federal Aviation Administration Specifications Promulgated by Federal Aviation Administration Aeronautical Center, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-682-7186 has 1 manufacturer part number on file: B50401 (Federal Aviation Administration Specifications Promulgated by Federal Aviation Administration Aeronautical Center).
4 possible matches (shared part number, not a government interchangeability claim): 5985-00-682-7189, 5985-00-682-7191, 5985-00-682-7192. Verify interchangeability with system specifications before substitution.
Key specifications for B50401: Maximum Height: 8.604 FEET FT; FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT; Section Quantity: 2; Top Diameter: 4.000 INCHES NOMINAL IN. 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.
NSN 5985-00-682-7186 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.