The Base,mast, cataloged under National Stock Number 5985-00-221-5543, 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 Espey Mfg and Electronics Corp. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5985-00-221-5543 |
| Primary Part Number | 27-2463 |
| Item Name | Base,mast |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Espey Mfg and Electronics Corp |
| Status | ACTIVE |
| FSC Application Data | RADIO AND TELEVISION COMMUNICATION EQUIPMENT,EXCEPT AIRBORNE |
| Mounting Facility Quantity | 4 |
| Mounting Method | UNTHREADED HOLE(S) |
| Mounting Hole Diameter | 0.938 INCHES NOMINAL IN |
| Distance Between Mounting Facility Centers | 5.500 INCHES NOMINAL SECOND MOUNTING FACILITY IN |
| Surface Treatment | PAINT |
| Special Markings | AB-102/TRC-1 |
| Material | STEEL |
| Mounting Hole Type | PLAIN |
| 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 |
|---|---|
| 27-2463 | Espey Mfg and Electronics Corp (USA) |
| Reference | Meaning |
|---|---|
| D1031 | 5/9 Secondary reference Vulcan Steel Products Co |
| SCD19512 | 3/2 Design control — primary reference U.S. Government activity |
| SCC45173 | 5/2 Secondary reference U.S. Government activity |
| AB102TRC1 | 5/2 Secondary reference U.S. Government activity |
NSN 5985-00-221-5543 is a Base,mast, manufactured by Espey Mfg and Electronics Corp, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-221-5543 has 1 manufacturer part number on file: 27-2463 (Espey Mfg and Electronics Corp).
1 possible match (shared part number, not a government interchangeability claim): 5330-01-203-0723. Verify interchangeability with system specifications before substitution.
Key specifications for 27-2463: FSC Application Data: RADIO AND TELEVISION COMMUNICATION EQUIPMENT,EXCEPT AIRBORNE; Mounting Facility Quantity: 4; Mounting Method: UNTHREADED HOLE(S); Mounting Hole Diameter: 0.938 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.
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.