3/8" Thick 5.75" x 3.875" D-Pipe Aluminum Grommet Pad | Left Hand | D3 Profile | Marine Grade 6061-T6
00153-L
Left-Hand Grommet Pad for D3 D-Profile Pipe
3/8" (0.375") thick marine-grade 6061-T6 aluminum grommet pad designed to wrap around D3 D-profile pipe. Through-holes with grommet inserts provide galvanic isolation between stainless hardware and the aluminum substrate while distributing fastener loads over a wider surface area to prevent deck damage. The 5.75" x 3.875" rectangular profile with a 3" × 1.5" D-cutout contour matches D3 pipe geometry. Left-hand orientation — pair with SKU 00153-R for symmetrical port/starboard installations.
| Material | Marine Grade 6061-T6 Aluminum |
| Overall Length | 5.75" |
| Width | 3.875" |
| Thickness | 3/8" (0.375") |
| D-Cutout | 3" × 1.5" |
| Corner Radius | R 1/4" |
| Pipe Profile | D3 D-Profile |
| Mounting Holes | 3 through-holes Ø 3/8" with grommet inserts |
| Orientation | Left Hand |
| Pairs With | SKU 00153-R (Right Hand) |
| Finish | Matte — paint/powder coat ready |
| Weight | 0.485 lb |
Common Applications
T-top leg mounts, tower installations, center console hard tops, radar arch mounts, and offshore fiberglass structures where D-profile pipe needs a grommeted mounting surface with galvanic isolation.
Frequently Asked Questions
What does a grommet pad do?
A grommet pad wraps around D-profile pipe with 3 through-holes Ø 3/8" that accept grommet inserts. The inserts provide galvanic isolation between stainless steel hardware and the aluminum deck substrate while distributing fastener loads to prevent cracking or damage to the fiberglass.
What does "Left Hand" mean?
Left-hand orientation means this pad mirrors the right-hand version (SKU 00153-R). Pair both for symmetrical port/starboard installations on T-tops and towers.
What does D3 mean?
D3 refers to the D-profile pipe size this pad matches — a 3" wide D-shaped aluminum profile commonly used in T-top and tower construction.
How is this different from an internal mounting pad?
An internal mounting pad welds inside the pipe with tapped holes for invisible fastener installation. This grommet pad mounts on the outside of the pipe with through-holes and grommet inserts, providing galvanic isolation and external fastener access.
- Local pickup available
- One Business Day Shipping
- Call us Mon.-Fri. 9:00 a.m. to 4:00 p.m. if in any doubt.
Due to this item's size and weight we can only ship it in an economical way via Less Than Truckload (LTL) consolidated land shipping, and only to the contiguous 48 States.
For shipping inquiries to AK, HI, PR, US-VI, and international shipping, please contact us first at sales@weldingworldinc.com.
All of the destinations above we can only serve as a Free Carrier (or FCA) modality, that requires the customer to contract and pay for their carrier service of choice. We can still ship the item, but only to a warehouse/receiving office within the 48-contiguous States.
In plain terms what this means is that if you want to ship your product to any non-contiguous US territory or internationally, you, the customer, has to provide us with the warehouse address of the carrier that serves your locality with an address within the contiguous 48-US States, as we do not ship overseas on our own.
