It depends on your monitor’s VESA pattern and the threaded inserts on the back. Here’s a quick way to narrow it down:

• Check your VESA pattern: Many monitors use 75x75 or 100x100 mm.
• Match the diameter: Monitors often use M4; larger displays and TVs may use M6 or M8.
• Pick a suitable length: For monitors, 10–14 mm is common; TVs may need 20–30 mm, sometimes with spacers.
• Use washers/spacers if the back is curved or recessed.
• Consider a universal kit that includes M4/M6/M8 screws, assorted lengths, washers, and spacers.

Thread by hand first and stop if there’s resistance. Checking your manual can help confirm the exact size.

The right VESA screw size is tied to your display and mounting pattern. As a general guide:

• M4: Common on computer monitors, especially with 75x75 or 100x100 VESA patterns.
• M6: Often used on mid‑size TVs or heavier displays.
• M8: Frequently used on larger TVs.

To confirm, review your display’s manual or look for markings near the mounting holes. A universal mounting hardware kit can help you test-fit by hand without forcing anything. If the screw doesn’t turn easily, it’s likely the wrong diameter or length. Washers and spacers can help align brackets on recessed or curved backs.

You can identify the right screw by checking a few details:

• Look for markings near the VESA holes or in the manual (e.g., “M4 x 10 mm”).
• Confirm the VESA pattern (often 75x75 or 100x100 mm on monitors), which commonly uses M4 screws.
• Start with shorter lengths like 10–12 mm for monitors; go longer only if needed.
• Test by hand using a universal screw kit—don’t force threads.
• Use washers/spacers if the mounting area is recessed.

On this page, you’ll find M4 options (10 mm, 12 mm, 14 mm) and assorted kits that cover multiple sizes. Always verify thread engagement and avoid overtightening.

A simple approach is to measure and match what your display can accept:

• Measure thread depth in the display’s insert (use a toothpick to gauge it).
• Account for bracket thickness and any washers you’ll use.
• Select a length that engages several turns of thread without bottoming out—monitors often use 10–14 mm, while TVs may need 20–30 mm.
• Add spacers if the back is curved or the holes are recessed; this can change the required length.

Universal kits on this page include multiple lengths so you can test-fit by hand. Stop if you feel resistance, and avoid overtightening to help protect the inserts.

No problem—replacement hardware is available. Here’s how to get a compatible set:

• Check your TV manual for the required screw size (M4, M6, or M8) and recommended length.
• Pick a universal TV mounting kit that includes multiple diameters, assorted lengths, washers, and spacers.
• Test-fit by hand to confirm smooth threading; don’t force a screw that doesn’t start easily.
• Use spacers/washers if your TV has a recessed back or uneven surface.
• Separate wall hardware: Screws for the TV are different from the fasteners used to attach the bracket to your wall.

These steps can help you replace missing screws safely, but always refer to your TV’s instructions for specifics.