Shakespeare 4187 Series Stainless Steel Ratchet Antenna Mounts - Standard & Extra Heavy Duty

The Shakespeare 4187 Series ratchet antenna mounts give boaters a rugged, all-stainless-steel way to install VHF, AM/FM, and cellular antennas on deck or side surfaces. The four-way ratchet head lets the mount adapt to vertical, horizontal, or angled mounting locations, and it makes it easy to lay the antenna down for low bridges or storage, then ratchet it back to the correct upright position. Both mounts in this line use a standard 1 inch - 14 thread (male) fitting to match the ferrule thread on most marine antennas, so upgrading or replacing a mount is a straightforward swap. Choose between the original 4187 for everyday cruising and fishing antennas, or step up to the 4187-HD when running taller, heavier antennas or extended stainless steel whips that need extra holding strength.

Specifications

• Brand: Shakespeare
• Material: Stainless steel construction throughout
• Mounting style: 4-way ratchet, deck or side mount
• Mounting surface: Vertical, horizontal, or tilted surfaces
• Thread size: 1 inch - 14 thread (male)
• Bolt hole diameter: 5/16 inch
• Bolt hole spacing: 3 inches x 1-1/2 inches on center

Sizes & Options

This line is offered in two build strengths. Pick the standard 4187 for typical VHF whips, AM/FM antennas, and everyday side or deck mounting. Pick the 4187-HD Extra Heavy Duty version when mounting longer, heavier, or higher-wind-load antennas, or when you want a stiffer, more robust base for offshore use. Both share the same thread size and bolt pattern, so either option installs the same way on a properly drilled mounting surface.