RAM® 1" NPT Hole with 3.5" x 3.5" Square Base

Name: RAM® 1" NPT Hole with 3.5" x 3.5" Square Base
Brand: RAM Mounts
SKU: RAM-D-299-SBU
Price: 85.87 USD
Availability: InStock
Rating: 5.0 (5 reviews)

RAM® 1" NPT Hole with 3.5" x 3.5" Square Base - Main image

$85.87 ~~$114.49~~ In stock

Category: Components

The RAM® 1" NPT Hole with 3.5" x 3.5" Square Base is a RAM Mounts component designed around a 1" NPT hole and a 3.5" x 3.5" square base. It is part of the RAM-D-299-SBU component family.

Brand: RAM Mounts
Product name: RAM® 1" NPT Hole with 3.5" x 3.5" Square Base
Category: Components
SKU: RAM-D-299-SBU
Base shape: square, 3.5" x 3.5"

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Customer Reviews (5.0 / 5 · 5 reviews)

Emma C. ★★★★★ Oct 23, 2026

The rubber ball and socket joint locks down tight and doesn't loosen after a bumpy ride. I've got it mounted on my boat console and the 1" NPT hole made installation a breeze with the standard plumbing fittings I already had.

Nicholas L. ★★★★★ Oct 22, 2026

The bolt pattern lines up perfectly with my existing mount setup, no drilling or modifications needed. I appreciate how the 1" NPT hole gives me plenty of options for attaching accessories. This base feels solid enough to hold my tablet on a bumpy boat ride.

James P. ★★★★★ Oct 21, 2026

This square base was exactly what I needed for a secure mounting point on my workbench. The 1" NPT hole made connecting my existing threaded arm effortless.