RAM 4" Square Post Clamp Mount with 75x75mm VESA Plate Setup
By RAM Mounts Google Search | Published: 2026-11-01
Category: How-to Guides
Step-by-step setup for the RAM 4" square post clamp mount with 75x75mm VESA plate, including clamp fit checks, plate alignment, and arm tension tips.
Quick answer
Mount the RAM 4" square post clamp mount by first confirming your post is no wider than 4 inches, then bolting the clamp plates around the post and attaching your 75x75mm VESA monitor to the plate before final arm adjustment.
Why the clamp and plate work as a pair
The RAM 4" Square Post Clamp Mount with 75x75mm VESA Plate combines a square-post clamp base, a short D-size double socket arm, and a square plate with a 75 x 75mm VESA hole pattern. That pairing matters because the clamp holds the mount to the post while the VESA plate carries the monitor, so each connection needs its own check before you load the arm.
The clamp base wraps around a maximum width of 4 inches and tightens by screwing two plates together with the included nuts and bolts. This is a bolted clamp, not a quick-release lever, so plan for tools and a final torque check rather than frequent repositioning.
When this mount is the wrong choice
If your post is wider than 4 inches, this clamp will not close around it, and no amount of tightening will fix that. Similarly, if your monitor does not have a 75 x 75mm VESA hole pattern, the supplied plate will not bolt to it directly. In those cases, look for a different clamp size or a VESA adapter rather than forcing the hardware.
The short double socket arm also limits how far the monitor can reach from the post. If you need the screen well away from the mounting point, this mount may sit too close; consider whether a longer arm or a different base suits your layout.
Step-by-step setup
- Measure the square post: Use a tape measure or caliper to check the post width on all four sides. The clamp accepts a maximum width of 4 inches, so any side over that means this mount will not fit. Measure at the exact height where the clamp will sit, not just at the post base.
- Lay out the clamp plates and hardware: Separate the two clamp plates, the included nuts and bolts, the short double socket arm, and the 75x75mm VESA plate. Confirm you have the bolts that join the clamp plates and the screws that attach the monitor to the VESA plate. Keep the clamp bolts and VESA screws in separate piles so you do not mix thread sizes.
- Fit the clamp around the post: Place one clamp plate on each side of the post and start the bolts by hand. Tighten them evenly in a cross pattern until the plates grip the post without crushing it. If the plates do not meet the post squarely, loosen and reposition rather than overtightening one bolt.
- Attach the VESA plate to the monitor: With the monitor face down on a padded surface, align the 75 x 75mm hole pattern on the plate with the monitor's mounting holes and thread in the VESA screws. Tighten snugly, but do not force screws that bind. Check that the plate sits flush; a gap means the screw length or hole pattern is wrong.
- Join the arm to clamp and plate: Connect the short D-size double socket arm to the clamp base ball and the VESA plate ball. Press each socket onto its ball until it seats, then tighten the arm's adjustment knob or lever only enough to hold the monitor. Test the arm tension with the monitor attached; if it droops, tighten slightly and retest.
- Final check and cable routing: Confirm all clamp bolts and VESA screws are tight, route cables with slack for movement, and gently push the monitor to check for play at the post, arm, and plate. Recheck the clamp bolts after the first day of use, since vibration can settle the connection.
Product facts
- RAM® 4" Square Post Clamp Mount with 75x75mm VESA Plate: Clamp base wraps around a maximum width of 4 inches and tightens with two plates, included nuts, and bolts. Measure your post before ordering; a post over 4 inches wide will not fit this clamp.
RAM® 4" Square Post Clamp Mount with 75x75mm VESA Plate - RAM® 4" Square Post Clamp Mount with 75x75mm VESA Plate: Includes a square D-size plate with a 75 x 75mm VESA hole pattern and a short D-size double socket arm. Confirm your monitor's VESA pattern is 75 x 75mm and expect a close mounting position from the short arm.
