VESA Mount Compatibility: Plate Sizes and Screw Patterns

Quick answer

• Measure between hole centres: 75 x 75 mm and 100 x 100 mm cover most desktop monitors.
• The pattern is width first, height second. A 100 x 100 plate will not bolt to 75 x 75 holes.
• Screws are M4 machine screws on the small patterns, and length equals bracket thickness plus the value in the standard's table. Display-supplied screws win.
• Weight ratings apply to the bare panel, and only at the arm position you actually use.

VESA mount compatibility sounds settled until you are holding a plate that does not line up. The interface people call a VESA mount is the Flat Display Mounting Interface (FDMI), an umbrella of standards rather than one fixed plate size, so a page that says "VESA compatible" has told you nothing yet. Desktop monitors use only a small part of that range. Here is how to identify the pattern you have, which screws to use, and where a technically correct fit is still the wrong purchase.

Is "VESA compatible" enough to know a mount will fit?

No. The FDMI began as a 100 mm square. A 75 x 75 mm pattern was later defined specifically for smaller displays, and a 2006 extension added screw patterns better suited to large TV screens. The standard now specifies seven sizes, referenced by MIS part letters.

Informal shorthand is where buyers get caught, because the names collide. "VESA 50" can point to four different variants, "VESA 75" to two, and "VESA 200" to three. If a listing gives you only the informal number, ask for the exact hole spacing or find the formal MIS part and variant label.

Scale is a useful reality check. Desktop monitors sit at the small end of the range and TVs at the large end, so hanging a monitor on a TV bracket, or the reverse, usually means you are at the wrong end of the range.

How do you measure the pattern on your monitor?

A VESA mount size is the distance in millimetres between the four mounting holes, written width x height. Measure centre to centre, not edge to edge, and measure both directions because the pattern can be rectangular.

Screen diagonal is not a proxy. Two monitors of the same size can use different VESA patterns, so read the spec sheet or measure the holes yourself. Some monitors carry both a 75 x 75 and a 100 x 100 set on the same back panel, which means either plate fits. Others give you one set only. The table below matches the most common patterns to the displays that use them.

A 100 x 100 plate has four holes 100 mm apart in both directions. If your holes sit 75 mm apart, the plate cannot seat. Adapter plates bridge some of these gaps, but every adapter adds bracket thickness, which changes the screw length you need. Treat an adapter as a build decision, not a quick fix.

What screw size and length do you need?

For parts B to E, the standard calls for M4 machine screws, with a length equal to the bracket thickness plus the length given in the standard's table. The word "plus" is the part people miss: the screw passes through the bracket before it reaches the display, so a thicker plate needs a longer screw.

The table below sets out the screw rules for the two relevant part groups.

If the screen manufacturer included different screws, those must be used instead of the ones that came with the bracket. That instruction exists because the display maker knows the depth of its own threaded inserts.

Going longer is not harmless. Oversized screws can bottom out inside the display and damage it, which is why the larger part F pattern caps engagement from both ends.

If you are reusing screws from an old mount, compare them against the ones the monitor shipped with before you thread anything in.

Who is responsible for the weight?

The standard splits the responsibility. The bracket manufacturer is expected to warrant that the bracket carries the standard's maximum weight when all specified screws are used, and the screen manufacturer warrants its own mounting holes.

That division matters when you run close to a limit. An arm's stated capacity refers to the net weight of the display panel itself, not the packaged weight and not the weight with the original stand attached. Look up the bare panel figure before comparing.

Capacity also depends on arm position. A fully extended arm supports less weight than one kept close to its base, so a printed rating is a ceiling rather than a promise at every angle. Material tells you the rest: steel mounts hold the highest capacity for heavy professional monitors, aluminium sits below that, and plastic parts in budget mounts reduce capacity and can deteriorate. A pattern mismatch can reduce usable capacity or create unsafe mounting conditions, so this is a safety question as much as a fit question. Large curved panels carry their own complications, covered in how to choose a monitor arm for a heavy ultrawide monitor.

Why does a curved or recessed back change the answer?

Deep curves move the centre of gravity farther from the mounting plate. On a deeply curved 49-inch super-ultrawide, that offset puts torque on the tilt joint even when the panel is inside the arm's weight rating. The answer is a stiffer tilt mechanism or extra headroom, not a lighter panel.

Recessed or circular mounting areas cause a different problem. A standard flat VESA plate may not seat properly without 10 to 20 mm standoff spacers, and the wrong spacers either scratch the housing or fail to reach the holes. If the back of your monitor curves inward around the mounting area, check that depth first.

Some displays skip VESA holes entirely and need a model-specific adapter. No universal part substitutes for it. If you are mounting two different models, how to choose a monitor arm for a two-monitor setup walks through the matching work.

What should you check before you click buy?

• Confirm the pattern from the spec sheet, then measure the holes to verify. Both numbers should read width x height.
• Note whether your panel has one pattern or two. Two sets widen your options.
• Read the mount's published pattern list, not its marketing summary. A gas-spring arm such as the HUANUO FlowLift tool-free monitor arm still fits only the patterns it lists.
• Compare the arm's net panel weight rating against the bare panel weight, then decide how much headroom you want for extension.
• Measure the depth of the mounting well. If it is recessed, budget for standoff spacers.
• Plan the cable run before the panel goes up, since a mount that tilts and swivels pulls on anything left slack. Cable management for a small desk covers the order to do it in.
• Keep the screws that came with the display in a labelled bag. They are the ones you are supposed to use.

If the free fixes are not enough

Measuring, reusing the display's own screws, and pulling the arm closer to its base solve most fit problems. When they do not, these are the situations that call for a different product.

Each of these still needs its published pattern list checked against your measured holes. The mount is the last purchase in this sequence, not the first.

Five VESA adapters and plates to check

An adapter solves one mismatch, but it adds a layer between arm and panel, and that extra thickness eats into the screw length the pattern allows. All five were listed for sale on 27 October 2026 at the prices shown. Where a page lists no screw contents or capacity, this section says so.

VIVO STAND-VAD2 quick release VESA adapter

$19.99. One plate bolts to the display, the second screws to the arm or wall, and the screen slides on and clips into place. VIVO lists 75 x 75 and 100 x 100 support, a 22 lb capacity and "all screws & hardware, except wall mounting hardware", with no screw sizes named. It solves the arm whose fixed plate has to be held in one hand while the panel is balanced in the other, and a reviewer on the page reports needing spacers so the release catch has room to move.

VIVO STAND-VAD3 height adjustable VESA adapter

$24.99 in black, and $24.99 in white from a $29.99 list price. It bolts between an existing plate and a 13 to 27 inch panel and adds 6.25 inches of tool-less height travel, with VIVO listing 75 x 75 and 100 x 100 support and a 17.6 lb capacity. That fixes two monitors on one arm whose holes sit at different heights, though it has the lowest capacity here, the page lists no screw sizes, and a review reports the included screws were too short to mount the reviewer's monitor.

HumanCentric VESA mount adapter plate, 5 patterns

$19.99. A flat steel plate drilled for 50 x 50, 75 x 75, 100 x 100, 200 x 100 and 200 x 200, so a 75 x 75 panel can hang from a 100 x 100 arm. The hardware list is four M6 screws, four M8 screws, eight washers and plastic spacers, which suits TV-side brackets more than monitor-side M4 inserts, and HumanCentric publishes no load rating. It is the part for the mismatch the pattern tables warn about: holes 75 mm apart on the panel, 100 mm apart on the arm.

HumanCentric VESA mount adapter plate, 4 patterns

$12.99. It converts 75 x 75 and 100 x 100 holes up to a 200 x 100 bolt circle, for hanging a desktop monitor on a TV bracket or a large-display arm, and the box list is the most complete of the five: short and long M4, M5 and M6 screws, four M4 washers and eight nylon spacers. HumanCentric lists the four patterns and no capacity figure, so the arm's rating still governs. At $12.99 it is the cheapest of the five.

Mount-It! MI-9006S replacement VESA plate

$22.99 in silver; the black version is listed at the same price and was out of stock on the same day. Mount-It names it as the replacement plate for the MI-2753, MI-1771B, MI-1771S, MI-1772B and MI-1772S, with 75 x 75 or 100 x 100 holes and a 33 lb rating. It solves the second-hand arm that arrived without its plate, or the plate lost in a move, and the page lists no screws, so budget for fasteners as well.

Prices change. All five figures were read from the seller's own page on 27 October 2026. Two of the pages publish no capacity figure and three publish no screw sizes, which is the pattern to expect from accessory listings. Check the pattern list and the depth of the display's mounting well before ordering, because the adapter adds a layer the original screws were not sized for.

Sources

• VIVO STAND-VAD2 quick release VESA adapter
• VIVO STAND-VAD3 height adjustable VESA adapter
• HumanCentric VESA mount adapter plate, 5 patterns
• HumanCentric VESA mount adapter plate, 4 patterns
• Mount-It! MI-9006S replacement monitor VESA plate

Frequently asked questions

What VESA pattern does my monitor use?

Check the monitor's spec sheet or the back of the panel. Most monitors use 75 x 75 mm or 100 x 100 mm; larger panels sometimes use 200 x 100 mm or 200 x 200 mm. The pattern is the distance between the threaded holes, not the size of the screen.

Can I adapt a 75 x 75 monitor to a 100 x 100 arm?

Yes, with an adapter plate that has both patterns. The plate adds a small amount of depth between the monitor and the arm, so check the arm's screw length and the monitor's recess before tightening.

What screws do I need for a VESA mount?

Most monitors use M4 screws, and some larger mounts use M6. The length depends on the monitor's recess; a screw that is too long can bottom out inside the case. Use the spacers and washers supplied with the mount, and stop when the screw is snug rather than over-tightening.

How much weight can a VESA adapter hold?

Only the figure the adapter publishes. Many plates list no load rating, in which case the arm's per-monitor limit is the number to check. A steel plate is usually stronger than the monitor it carries, but the bolts and the monitor's inserts are the weaker parts.

Do I need a VESA adapter for a curved monitor?

Some curved panels have recessed or angled mounting points that need spacers or a plate with longer standoffs. Check the monitor's VESA depth and the arm's hardware before assuming a standard plate will sit flush.

Sources and further reading

• Wikipedia's VESA mount entry, used for the FDMI family, the seven sizes, the screw length rules, the part F engagement limits, the ambiguous shorthand, and the split warranty responsibility.
• HiLipi's guide to VESA mount compatibility, used for the 75 x 75 and 100 x 100 prevalence on desktop monitors, dual pattern back panels, and the point that screen size is not a reliable proxy.
• Mount-It's VESA mounting guide, used for the width x height convention and the monitor versus TV pattern ranges.
• HUANUO's monitor mount safety guidance, used for the effect of extension on weight capacity, material durability, and the safety framing of pattern mismatches.
• KTC Play's VESA compatibility notes, used for net panel weight ratings, standoff spacers on recessed mounting wells, and the centre of gravity shift on deep curve panels.