The Base,mast, cataloged under National Stock Number 5985-01-487-3197, 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 Naval Sea Systems Command. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5985-01-487-3197 |
| Primary Part Number | 6853511 ITEM NO. 16 |
| Item Name | Base,mast |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Mounting Facility Quantity | 12 |
| Overall Diameter | 7.250 INCHES NOMINAL IN |
| Mounting Facility Circle Radius | 5.750 INCHES NOMINAL IN |
| Mounting Method | UNTHREADED HOLE(S) AND THREADED HOLE(S) |
| Mounting Hole Diameter | 0.660 INCHES NOMINAL IN |
| Basic Shape Style | CYLINDRICAL |
| Thread Class | 3B |
| Material | STEEL COMP 304 |
| Thread Size and Series/type Designator | 5/8-11 UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 7287639-1 | Naval Sea Systems Command (USA) |
| 6853511 ITEM NO. 16 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 7287639 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 5985-01-487-3197 is a Base,mast, manufactured by Naval Sea Systems Command, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-487-3197 has 2 manufacturer part numbers on file: 7287639-1 (Naval Sea Systems Command), 6853511 ITEM NO. 16 (Naval Sea Systems Command).
Key specifications for 6853511 ITEM NO. 16: Mounting Facility Quantity: 12; Overall Diameter: 7.250 INCHES NOMINAL IN; Mounting Facility Circle Radius: 5.750 INCHES NOMINAL IN; Mounting Method: UNTHREADED HOLE(S) AND THREADED HOLE(S). 10 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.