The Mast, cataloged under National Stock Number 5985-00-259-5631, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-259-5631 |
| Item Name | Mast |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Status | ACTIVE |
| Maximum Height | 20.240 FEET FT |
| Mast Construction | SECTIONALIZED |
| Mounting Method | FLANGE |
| Section Quantity | 2 |
| Base Diameter | 9.280 INCHES NOMINAL IN |
| Surface Treatment | ENAMEL |
| Material | ALUMINUM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| MIL-D-16252 | 4/1 Identification reference U.S. Government activity |
| AB198U | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-00-259-5631 is a Mast, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5985-00-285-0795. Verify interchangeability with system specifications before substitution.
Key specifications for 5985-00-259-5631: Maximum Height: 20.240 FEET FT; Mast Construction: SECTIONALIZED; Mounting Method: FLANGE; Section Quantity: 2. 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.