How to Use Wall Plugs and Screws: 13 Steps

Wall plugs (also called wall anchors) are the tiny heroes that let a screw hold onto something that isn’t a stud. Without them, drywall turns into a crumbly snack for your fastener, and your “simple shelf project” becomes a gravity experiment.

This guide walks you through choosing the right plug, drilling the right hole, and driving the screw without stripping the wall or your patience. We’ll cover drywall, plaster, and masonry scenarios, plus the “why is this spinning?” troubleshooting you’ll almost certainly meet at least once.

Before You Start: Know Your Wall Plug Options

Not all wall plugs are created equal. Picking the right one is most of the battle (the rest is drilling straight and pretending you meant to make that first hole).

Step 1: Identify Your Wall Material (Drywall, Plaster, or Masonry)

Your anchor choice depends on what you’re drilling into. Drywall sounds hollow when tapped and usually has paper facing. Plaster feels harder and can crumble around holes if you rush. Concrete/brick needs a masonry bit and usually a hammer drill. If you aren’t sure, drill a tiny test hole in an inconspicuous spot and see what comes out: white gypsum dust (drywall), gritty crumbly dust (plaster), or stone-like dust (masonry).

Step 2: Estimate the Load (and Add a Safety Buffer)

Don’t guess wildly. If the item has a listed weight, use it. If not, use a bathroom scale: weigh yourself, then weigh yourself holding the item, subtract. Then add a buffer because real life includes door slams, towel yanks, and that one friend who “just wants to see if it’s sturdy.” As a rule of thumb, choose hardware rated well above the item’s weightespecially for shelves, curtain rods, and anything people might pull on.

Step 3: Choose the Right Wall Plug (Match Wall Type + Weight)

For light décor on drywall, plastic expansion plugs or small self-drilling anchors can work. For medium loads (like a towel bar that will actually be used), step up to a quality self-drilling anchor or a hollow-wall anchor. For heavier loads, use togglesor better yet, hit a stud whenever possible. For concrete/brick, consider masonry screws (or anchors rated for masonry). The packaging is your friend here: it typically lists wall compatibility, screw size, and load guidance.

Step 4: Pick the Correct Screw (Length and Diameter Matter)

The screw and plug are a team. Too skinny and the plug won’t expand/grip; too thick and you can split the plug or strip the hole. Use the screw size recommended on the anchor packaging whenever possible. For length: you want the screw to go through the thing you’re mounting and still fully engage the anchorwithout bottoming out inside the wall cavity (or jamming in masonry dust). If you’re mounting brackets, washers can help distribute pressure and prevent wobble.

Step 5: Gather Tools (So You Don’t “Improvise” With a Butter Knife)

Basic kit: drill/driver, correct drill bit(s), screwdriver bit, pencil, tape measure, level, and a small hammer (for tap-in plugs). Helpful extras: stud finder, painter’s tape (for clean marks), vacuum, safety glasses, and a flashlight for peeking into holes. For masonry: carbide masonry bit and a hammer drill make life much easier. If you’re using toggle-style anchors, keep the manufacturer’s instructions nearbythose parts have opinions.

Step 6: Mark the Spot and Check for Studs and Hazards

Mark your hole location lightly in pencil. Use a level for anything with multiple fasteners (shelves, rails, brackets). Then scan for studs; if you can anchor into a stud, do itstuds are the VIP section of wall fastening. Also think about hazards: avoid drilling directly above or below outlets/switches where wiring is commonly routed, and be cautious near plumbing walls (bathrooms/kitchens). When in doubt, slow down and verify.

Step 7: Drill the Pilot Hole (The “Right Size” Is Not a Vibe)

For plastic expansion plugs, drill a pilot hole that matches the anchor body diameter (not the flange). For self-drilling drywall anchors, you may only need a small starter holeor nonedepending on the product and wall. For masonry screws/anchors, use the specified masonry bit size and drill to the recommended depth (usually a bit deeper than the embedment so dust has somewhere to go). Keep the drill perpendicular to the wall to prevent a sloppy, oversized hole.

Step 8: Clean the Hole (Especially in Masonry)

Dust is the silent saboteur. In drywall, a quick vacuum or a puff of air is usually enough. In concrete/brick, dust can prevent screws from seating properly and reduce holding power. Vacuum, blow out the hole, or use compressed air if available. If you drilled deeper than needed, greatthat extra space helps collect dust at the bottom instead of turning into a “why won’t this tighten?” mystery.

Step 9: Insert the Wall Plug

For plastic expansion plugs: push the anchor into the hole, then gently tap it with a hammer until the flange is flush with the wall. Don’t smash it like you’re tenderizing drywall (drywall is already tender). For self-drilling anchors: press the tip into the wall and turn clockwise with steady pressure until the anchor sits flush. If it won’t bite, stop and predrill a small pilot hole rather than chewing the wall into confetti.

Step 10: Seat It FlushNot Sunken, Not Proud

The anchor’s collar/flange should end up flush with the wall surface. If it’s sticking out, your bracket won’t sit flat. If it’s sunk below the surface, you may have crushed drywall or enlarged the hole, reducing holding power. For hollow-wall anchors and toggles, follow the product’s steps carefully so the mechanism expands behind the wall correctly. This is where “close enough” turns into “close enough to fail later.”

Step 11: Drive the Screw (Slow Is Smooth, Smooth Is Strong)

Place your fixture/bracket over the anchor, then drive the screw in straight. Use a drill/driver on a lower torque setting or finish by hand to avoid stripping. Stop when the fixture is snug against the walldon’t keep going until the drywall begs for mercy. Example: Hanging a 20-lb mirror on drywall? Two properly rated anchors, installed straight and tightened snugly (not over-tightened), is usually more dependable than one “monster” anchor installed poorly.

Step 12: Check Alignment, Then Test the Hold (Gently)

Before you load it up, confirm level and alignment. If it’s a shelf bracket or rail, recheck with a level after tightening. Then do a gentle test: apply light downward pressure or a small tug in the direction the load will pull. You’re looking for movement, creaking, or a screw that keeps turning without tightening. If anything feels wrong, fix it nowthis is the cheap moment, not the “crash in the middle of the night” moment.

Step 13: Know How to Remove or Fix a Bad Install

If an anchor is misplaced or spinning, don’t keep tightening like it owes you money. For many plastic anchors, you can back the screw out and pull the anchor with pliers (or carefully work it out). Some anchors can be pushed into the wall cavity if removal will destroy the surface anywaythen patch. For drywall repairs, spackle/joint compound, sand, and touch-up paint are your cleanup crew. If you made a hole too large, step up to a larger anchor type or relocate and patch the original hole.

Common Problems (and Fixes That Don’t Involve Swearing at the Wall)

The anchor spins in place

Usually the hole is too big or the drywall is damaged. Fix: remove it, patch if needed, and use a larger anchor (or a toggle) in the same spot, or move to a fresh location. For threaded self-drillers, spinning often means the drywall has strippedswitch to a toggle-style anchor for that cavity.

The screw won’t tighten or bottoms out

In drywall, you may be using a screw that’s too long for the anchor/fixture combo. In masonry, the hole may not be deep enough or dust-packed. Fix: check length, drill slightly deeper (if appropriate), and clean the hole again.

The wall crumbles around the hole (hello, old plaster)

Plaster can crack if drilled aggressively. Fix: use painter’s tape over the mark to reduce chipping, drill slowly, and consider a hollow-wall anchor designed for plaster. If the surface is already weak, spreading the load with a mounting plate or moving to a stud may be the best solution.

I accidentally hit a stud

Congratulationsyou found the strongest “anchor” available. If your screw placement still works, skip the plug and use an appropriate wood screw (not a brittle drywall screw for heavy-duty mounting). If the stud location throws off your layout, consider shifting your bracket spacing or using one side in a stud and the other with a high-quality anchor.

Safety Notes (Because ER Visits Are Bad for Productivity)

• Wear eye protection when drillingespecially into plaster or masonry.
• Use the right bit (wood/drywall vs carbide masonry bit) and keep it sharp.
• Avoid drilling near outlets/switches and be cautious on plumbing walls.
• For very heavy items (large TVs, cabinets), mount to studs or use mounting systems rated for the job.
• Don’t exceed anchor ratings, and remember ratings vary by wall thickness and condition.

Real-World Experiences: of “Been There, Patched That”

The first time you use wall plugs, you learn a beautiful truth: the wall always looks tougher than it is. Drywall is basically compressed gypsum wearing a paper jacket, and it will absolutely pretend it can hold a shelf right up until it can’t. My earliest “lesson” was a small floating shelf installed with tiny plastic expansion plugs because the box said “up to 25 lbs.” What the box didn’t say (loudly enough) is that 25 lbs assumes a perfect wall, a perfect hole, a perfect screw, and a universe where nobody ever yanks the shelf like a drawer. Two weeks later, the shelf was fine… until someone leaned on it to tie their shoe. The anchors held for a second, then the drywall politely surrendered.

The fix was simple: move from light-duty plugs to a toggle-style anchor that grabs behind the wall, and suddenly the same shelf felt like part of the building’s skeleton. That’s the moment you stop thinking “anchors are interchangeable” and start thinking “anchors are engineering.” Once you see the difference between an anchor that expands inside a soft material and one that clamps from behind, you choose differently forever.

Another common experience is the “spinning anchor spiral.” You drill, insert, drive the screw… and the anchor spins like it’s auditioning for a fidget-spinner commercial. The rookie move is to keep tightening, which only enlarges the hole and turns your wall into a sad bagel. The calm move is to stop, remove it, and either step up the anchor type (toggle) or relocate. Spinning is not a challenge; it’s a diagnostic message.

Then there’s masonry, where confidence goes to humble itself. Concrete and brick don’t care about your cordless drill’s feelings. The first time you drill into concrete without a hammer drill, you realize you’ve entered a slow, noisy negotiation. When you do it properlyright carbide bit, correct hole size, hole drilled deep enough, and dust cleaned outmasonry screws can feel almost magical. When you skip the cleaning step, the screw may tighten halfway, then freeze like it just remembered an embarrassing moment from middle school. Dust management is the difference between a clean install and a half-seated screw that laughs at you.

The most valuable experience, though, is learning when not to use anchors at all. If you can hit a stud, do it. It’s faster, stronger, and far less dramatic. And if you can’t hit a stud for something heavy, use anchors that are truly designed for heavy loads (and use enough of them, properly spaced). The best wall-plug job isn’t the one where you used the fanciest hardwareit’s the one where you chose the right hardware, installed it cleanly, and never had to think about it again.

Conclusion

Using wall plugs and screws isn’t complicatedit’s just picky. Identify the wall, choose an anchor rated for the load, drill the correct hole, seat the anchor flush, and tighten the screw snug (not savage). Do those things and your mounted items will stay up where they belong: on the wall, not on your toes.