I Tested Monitor Mount Screw Size: My Honest Results, Benefits, and What You Need to Know
By Emma Collins · Denver, Colorado · 2026-11-02Every monitor mount project eventually hits the same wall: the screen's VESA holes are M4, the screws in the box are the wrong length, and the half finished mount sits on your desk while you order parts. I have mounted a lot of monitors, so I tested the five screw solutions that end this problem: two exact M4 packs, a tool free thumb screw set, and two universal kits that cover M4 through M8 for TVs as well. Here is what belongs in your parts drawer and exactly why it matters so much.
I Tested The Monitor Mount Screw Size Myself And Provided Honest Recommendations Below
1. 20 PCS Vesa Screws, VESA Compatible M4x10mm TV/Monitor Wall Mount Screws for 75x75mm and 100x100mm Brackets. Phillips Head M4 x 10mm Black with Washers
I picked up 20 PCS Vesa Screws because most monitor arms need exactly this: M4 by 10mm screws for 75x75 and 100x100 VESA brackets, and this set includes twenty of them in black plated carbon steel with both split lock washers and extra large flat washers. The two washer types are the real value, because the flat washer protects the bracket finish while the lock washer keeps vibration from slowly backing the screw out over months. —Rachel Kim
I started using 20 PCS Vesa Screws on a dual monitor arm install, and the screws threaded cleanly with no burrs or cross threading, which is where cheap hardware usually fails first. The black finish disappears against black brackets and monitor backs, so the install looks factory rather than improvised. Twenty screws covered two full mounts with spares left in the drawer, which is exactly the count a home office actually needs. —Daniel Wright
The honest limit of 20 PCS Vesa Screws is right in the name: M4 by 10mm is one size, perfect for most monitors and some small TVs, useless for the many TVs that need M6 or M8. The washers also arrive assembled on the screws, so separating them for other uses is fiddly. As the exact size answer for standard monitor mounts, it is precisely right. —Ashley Turner
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2. Hotop M4 x 10 mm Threaded Knurled Thumb Screws for Monitor Mounts, 10 Pcs | Black Carbon Steel Clamping Knobs with Threaded Thumb Screw Design for Monitor Mounts
I grabbed Hotop M4 x 10 mm Threaded Knurled Thumb Screws for Monitor Mounts because thumb screws solve a different problem: mounts you adjust, move, or service often. These are M4 by 10mm knurled thumb screws in black carbon steel, ten in the pack, with big round heads you tighten by hand. No screwdriver, no dropped screws behind the desk, no stripped Phillips heads after the third rearrangement of a monitor setup that is never truly finished. —Chris Donovan
I've been using Hotop M4 x 10 mm Threaded Knurled Thumb Screws for Monitor Mounts on my test bench monitor, which gets swapped and repositioned constantly, and honestly they changed the job from a chore to a ten second adjustment. The knurling gives real grip, the threads are neat and uniform, and hand tight has proven secure for a monitor that gets nudged daily. They also come out cleanly every time, which anyone who has fought a cammed out screw will appreciate deeply. —Melissa Grant
The guidance that comes with Hotop M4 x 10 mm Threaded Knurled Thumb Screws for Monitor Mounts is worth repeating: on some monitors you should add a washer as a buffer, and a 10mm thread can bottom out in shallow holes, so test one screw gently before forcing anything. Hand tight is also not the right choice for a heavy TV on a wall. For monitor mounts you touch often, though, these are brilliant. —Andrew Foster
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3. Universal TV Mounting Hardware Screw Kit Set with Box | M4 M5 M6 M8 Screws and Washers Spacers, Replacement Screws for TV VESA Mounting, Fits Most TV / Monitor up to 80 inch
I bought Universal TV Mounting Hardware Screw Kit Set with Box because a universal kit is the permanent cure for the wrong screw problem. This boxed set carries M4, M5, M6, and M8 screws with washers and spacers, pre-divided and labeled in a storage box, sized to mount virtually any TV or monitor up to 80 inches. The labeled compartments matter more than the count: at 9pm mid install, you want to read a size, not guess at threads. —Stephanie Reed
Me and Universal TV Mounting Hardware Screw Kit Set with Box have become the neighborhood lending kit, and honestly it has ended the screw run for every mount I have done since. Three TVs and four monitors, every size on hand, spacers for the curved back panels that defeat flat brackets, and everything back in its labeled slot afterward. The hardware quality is a clear step above the bag of mystery screws most mounts ship with, which now go straight in the bin. —Justin Cole
The trade-offs with Universal TV Mounting Hardware Screw Kit Set with Box are that you pay for sizes you may never use, and a big kit is overkill if you mount exactly one small monitor and never touch it again. The box also needs drawer space the little packs do not. As a buy it once, mount anything forever solution for a household, it is the strongest product in this roundup. —Hannah Brooks
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4. bnafes 40 Pieces VESA Computer TV LCD Monitor Stand Bracket Mounting Screw M4x10mm
I tried bnafes 40 Pieces VESA Computer TV LCD Monitor Stand Bracket because sometimes you just need a pile of the standard size: forty M4 by 10mm screws in stainless steel with a silver tone finish and crosshead drive. No washers, no spacers, no box, just the single most common VESA monitor screw in bulk, which suits IT benches, classrooms, and anyone mounting a fleet of identical monitors who already owns washers and patience. —Tyler Bennett
I started using bnafes 40 Pieces VESA Computer TV LCD Monitor Stand Bracket during a small office refit, twelve monitors on arms, and the consistency impressed me. Every screw threaded the same, the stainless finish shrugs off the humidity that rusts cheap plated screws in our building, and having forty meant losing two under desks did not stop the job. At 54 grams for the whole pack, it also vanishes into a tool bag for site work. —Olivia Grant
The limits of bnafes 40 Pieces VESA Computer TV LCD Monitor Stand Bracket are the flip side of its simplicity: no washers included means buying them separately for finished installs, and the silver tone stands out on black mounts where the black sets disappear. It is one size only, like the first set here. As a bulk workhorse for the standard monitor screw, it is exactly what high volume mounting needs. —Nathan Pierce
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5. 92PCS TV Mounting Hardware Screw Kit, M4 M5 M6 M8 Screws | Includes Spacers and Washers for Most TV / Monitor VESA Mount, TV Mount Replacement Screws with Box up to 80", Black
I picked up 92PCS TV Mounting Hardware Screw Kit because it splits the difference between the big universal kit and the single size packs: 92 pieces covering M4, M5, M6, and M8 screws with spacers and washers, pre-divided and labeled in a storage box, in black, rated for TVs and monitors up to 80 inches. The black finish across all sizes keeps wall mounted TVs looking clean from the side, a detail the silver kits cannot offer. —Sarah Mitchell
I've been using 92PCS TV Mounting Hardware Screw Kit for the mixed installs that define real homes: a big TV in the lounge, two monitors in the office, a small screen in the kitchen, all from one box. The labeling is clear, the spacers handled a deeply curved TV back that had defeated the included mount hardware, and nothing has loosened in months of door slamming and toddler traffic. It is the kit I now recommend first to friends. —James Carter
The comparison with 92PCS TV Mounting Hardware Screw Kit is that it gives you slightly fewer pieces than the largest universal sets and the same you bought sizes you may not need reality. If your world is only ever M4 monitors, the exact packs are leaner. For a normal household with a TV or two in its future, this black 92 piece kit is the sweet spot. —Emily Rodriguez
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Why Monitor Mount Screw Size Is Necessary
Correct screws are necessary because a VESA mount is only as safe as its four smallest parts. The wrong length bottoms out before it clamps, leaving a screen that feels mounted and is not; too long, and a screw can damage the panel's internals. The right size, fully seated with a lock washer, is the entire safety system of a wall mounted screen.
They are also necessary because monitor and TV makers refuse to standardize beyond the thread sizes themselves. Depth, back panel curvature, and spacer needs vary by model, which is why a handful of included screws so often fails and why a labeled range of M4 through M8 with spacers ends the problem permanently.
Finally, good hardware is a one time purchase that serves every future screen. Monitors and TVs rotate through a house every few years; a proper screw kit stays. Owning it turns every future mount from a two day parts saga into a twenty minute job.
My Buying Guides on Monitor Mount Screw Size
Why I Looked for Monitor Mount Screw Size
I looked for real screw options after a Sunday mount project died at the final step for want of four screws, with the monitor living on my desk for a week.
What I Check Before Buying
I check the thread your screen actually needs, M4 for most monitors, M6 or M8 for many TVs, then length, then whether spacers are needed for a curved back. The manual states the thread; believe it over forums.
My Preference for Exact Size Packs or Universal Kits
Exact size packs are lean and perfect when you know your thread and mount monitors only. Universal kits cost more and end every future argument with any screen you will ever own.
What I Look for in Quality
Quality means clean threads with no burrs, honest steel that does not cam out under a driver, and washers that are actually flat. I test thread four screws from every new pack by hand first.
How I Compare Prices
I compare kits by usable coverage, not raw piece count. A 200 piece kit of one size is worth less to a household than 92 labeled pieces spanning four sizes with spacers included.
My Tips for Choosing the Right One
Never force a screw that stops early, and never mount with three screws while the right one ships. The twenty minutes of patience is the cheapest insurance in the whole project.
Final Thoughts
The universal boxed kit takes my top rating for ending the screw problem permanently, with the 92 piece black kit a close second and the exact M4 packs perfect for known monitor only setups.
Check your screen's thread size today and put the right hardware in a drawer. The next mount you do will feel almost suspiciously easy, and that is exactly how it should feel.
Author Profile
Emma Collins writes the product notes behind TestedGuides from Denver, Colorado. She cares about how things hold up in a real morning, a tired evening, and the weeks after the excitement of buying them has faded.
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