3/8" Thick 5-7/8" x 12" Rectangular Aluminum Grommet Pad | 4 Through-Holes | Marine Grade 6061-T6

5-7/8" x 12" Rectangular Grommet Pad — Through-Hole Isolation

Precision CNC-machined 6061-T6 aluminum rectangular grommet pad with four through-holes for galvanic isolation. Designed for the inside of pedestal walls in saltwater marine environments — the grommet pad sits between the fastener and the tube wall to prevent corrosion.

Common Applications

T-tops, tuna towers, hard tops, radar arches, leaning posts, grab bars — commonly used on flat pedestal and hard top panels as the inner isolation layer.

Frequently Asked Questions

What does "grommet pad" mean in this context?
A grommet pad has straight through-holes (not countersunk) and sits on the inside of the pedestal wall. It provides galvanic isolation between the fastener and the aluminum tube — preventing corrosion at the contact point.

What fasteners work with this pad?
Use 5/8" machine screws or bolts to match the through-holes. Hardware and fastener requirements vary by installation — consult your fabricator for the appropriate specifications.

Why a rectangular pad instead of round?
Rectangular pads distribute fastener load across a wider surface area and align naturally with flat pedestal and hard top panels where a round pad would waste corner contact area.