Rupp Threaded Support with 6-Inch Flat Mount

Antenna mounting systems by Rupp combine good looks with genuinely thoughtful engineering, and this Threaded Antenna Support with 6-Inch Flat Mount takes that design in a slightly different direction than the pipe-mount version. The locking collar still holds an antenna securely in place while underway, yet unlocks conveniently whenever it needs to come down for clearance or storage. A flat base, rather than a pipe base, is the difference that matters here for boats without a round rail or pipe to clamp onto.

The support is made of forged and anodized aluminum, chosen for genuine strength as well as long-lasting good looks that won't chalk or corrode in a marine environment. Forging gives the aluminum a denser grain structure than a cast part would have, so it holds up better to the constant vibration a tower-mounted antenna experiences underway. The anodized finish then adds a hard, corrosion-resistant layer on top of that strength.

This threaded mounting package is specifically designed for tuna towers and tower tops, pairing a 6-inch flat mount with the same oval 4-way base and 1.5-inch locking collar used across Rupp's antenna support line. That shared hardware means an existing collar or upper antenna support will likely match this base without hunting for an adapter. The flat mount bolts directly to a flat tower top surface rather than clamping around a pipe. See what else we carry in marine antennas.

• Threaded 6" flat mount, ideal for tuna towers
• Forged and anodized aluminum construction
• Oval 4-way base, 1.5" locking collar
• Bolts to flat surfaces rather than clamping a pipe