The diameter of the drill bit you choose will depend on how big a hole you want to drill. If not, measure the outside diameter of the shank of the anchor about halfway between the screw opening and the tapered end, and use a drill bit with that diameter. To use, remove the wings from the screw, place the hangable object on the screw if attaching it permanently to the wall, then add the wings to the screw so they open toward the screw head. If it's too small, the anchor won't fit, and if the hole is too large, it won't hold. Expansion Wall Anchors. Measure the diameter of a conical wall anchor approximately 1/4 inch away from the opening with an accurate ruler and choose a drill bit of that diameter to drill the hole for it. Plastic wing anchors don't have bolts attached to them. In hollow walls these are driven into a pre-drilled hole and crimped by turning the included screw. Once the anchor is pushed into the hole, flange end out, insert a screw of the gauge indicated on the anchor package. If the diameter of the anchor is displayed on the packaging, drill the hole with a bit of the same diameter. Then use a manual or … Drill a hole into concrete that is deeper than the anchor is long. The screw will expand the sides of the anchor out, securing it in the wall. If you're drilling into drywall, drill all the way through it. Never rely on a conical anchor to support a heavy load on drywall. The drill bit size can be determined by using a drill bit size card. If this is not something you think will work for you, another option is to look for the size etching at the base of the shank. Besides having an abiding interest in popular science, Deziel has been active in the building and home design trades since 1975. Toggle bolt anchors are some of the strongest anchors you can use. Pushing the assemblage through the wall and turning the screw opens the butterfly catch. As a landscape builder, he helped establish two gardening companies. XLR. The drill bit you use should match the center of the drywall anchor. NOMINAL DRILL DIAMETER NOMINAL DRILL DIAMETER 3/16 1/4 5/16 3/8 7/16 1/2 9/16 5/8 11/16 3/4 7/8 1 1-1/8 1-1/4.206 -.198.268 - .260.335 - .327.398 - .390.468 - .458.530 - .520.592 - .582.660 - .650.723 - .713.787 - .775.917 - .905 1.042 - 1.030 1.175 - 1.160 1.300 - 1.285 TOLERANCE BAND 1/4". Choose a drill bit that corresponds to the necessary pilot hole size for the wall plug you intend to use. Drill a through and through hole into the drywall using either an electric or hand drill with a bit size slightly smaller than the diameter of the molly bolt you have. A plastic anchor with a wide flange on one end requires a drill bit the same width as the narrow portion of the anchor to create a pilot hole. Plan the hole. 150 lbs. Select a very sharp drill bit at least twice the size of the molly's screw. Toggle bolts and molly bolts can hold the most weight while conical anchors hold the least. Shop for Hollow Wall Anchors. 3/16" is 0.1875" The holes I drilled with the 3/16" bit are actually 0.225" and the widest part of the anchor is 0.245" -- almost 1/4"! They are extremely strong and can be used in walls of varying thickness. Push the anchor into the hole and tap it lightly with a hammer until it fits snugly and its end is flush with the wall. If you're using wall anchors as well as screws, the drill bit and anchors should have the same diameter. If the type of anchor you select requires a pre-drilled pilot hole, you will also find the corresponding drill bit size on the package. Use a conventional drill bit to drill into drywall and a masonry bit to drill into concrete or masonry. When measuring toggle bolts and wing bolts, be sure the wings are folded up parallel to the sleeve before you measure. As you tighten the bolt or screw, the wings will expand against the back of the drywall or, in the case of a molly bolt, the sleeve will expand against the sides of the hole to hold the bolt in place. Some packages of anchors even have the correct drill bit included with the packaging. 2. LR. A drill bit size hole card can be very helpful for this. Chris Deziel has a bachelor's degree in physics and a master's degree in humanities. Molly bolts and toggle bolt sleeves have barbs under the front lip that dig into the drywall to hold the sleeve in place. All the fasteners shown here require a pilot hole to slip the fastener or anchor into. I am planning on hanging some things on my dry wall, but I have all these screws and anchors and I'm not sure what size anchor and drill bit I'm suppose to use? In the event that you encounter both exceptions listed above, go up two drill bit sizes. 1-1/4" - 1-3/4". These are available for hollow walls like drywall, paneling, and plaster and for solid materials like concrete, brick, and stone. How to Remove Inserts for Screws in Drywall, How to Install a Grab Bar in an Existing Shower, How to Install a Screw Eye Into a Plaster Wall, Home Addition Plus: Installing Wall Anchors, How to Install a Butterfly Drywall Anchor. Step 3 - … Most drill bits nowadays have diameters of between 1 mm and 20 mm. Drywall anchors; Make absolutely sure you get a drill bit set and not just one or two drill bits. Use an Appropriately Sized Drill Bit. Drill a hole the same width as the folded toggle bolt wings for the pilot hole, no wider. Screw the bolt that came with the molly bolt or toggle bolt into the sleeve or screw a wood screw into a plastic wing anchor. You can also size drill bits by pushing them through holes. Insert the sleeve into the hole as far as it will go and tap it with a hammer until the front edge of the opening is flush with the wall. The anchor requires a pilot hole to be drilled in the wall first, however, to install it. If you don’t have an electric drill, press the tip of a Philips head screwdriver against the wall and twist it … If you want to reuse the hole for a toggle, tap the anchor through the wall. Wall Anchors; Compliance ... 6-8 x 3/4" Conical Plastic Anchor 3/16" Drill Size. To get the right-size hole, measure the shank of the drill bit against the front of the anchor-- its diameter should be the same size or 1/16 inch more than that to make the opening for the screw. First, you can size screws simply by inserting them into a hole then reading the marking. The diameter of the hole you drill should be slightly smaller than the diameter of the screw. Apart from that, there's no challenge to inserting a wall anchor, as long as you use one that will support the weight you plan to put on it. 260 lbs. ing drill tolerances to anchor dimensions. Drive a screw into the anchor and it will expand and wedge against the sides of the hole. Hold the bits up to the anchor until you find the right size. Wall anchors are rated for weight. Drill the hole for the sleeve all the way through the drywall. A plastic anchor with a wide flange on one end requires a drill bit the same width as the narrow portion of the anchor to create a pilot hole. Mark the desired spots with a pencil, then break out your drill. Kathy Adams is an award-winning journalist and freelance writer who traveled the world handling numerous duties for music artists. This forces the sides to expand and press against the backside of the wall … Think about drilling a pilot hole like playing the Price is Right — get the closest without going over. Use a drill bit that's the same size as the dry wall anchor. A standard drill will do OK in soft brick and mortar, but it’ll just frustrate you and burn out bits … Whether you're using a plastic wall anchor, a molly bolt or any other type of wall anchor, you'll need to drill a hole in the wall, and the size of the hole is critical to the proper functioning of the anchor. If the diameter of the anchor is displayed on the packaging, drill the hole with a bit … Measure the diameter of the widest part of the sleeve with a ruler and choose a drill bit of that diameter. How to Drill Into an Exterior Plaster Wall, How to Convert Faucet Handles to Wall Hooks, How to Install a Coax Wall Plate for DirecTV, Ask the Builder: Wall Anchors for Concrete, Block & Drywall, This Old House: Choosing the Proper Fastener, How to Cover a Large Hole in a Brick Wall, How to Hang a Large Heavy Mirror on a Brick Wall. For instance, a non-tapered brass screw that’s size # 6 would use 3/32″ drill bit for softwood & 7/64″ drill bit for hardwood. Fastenal Part No. If the drywall anchors are loose or no size is listed on the packaging, you can find the right drill bit size. The package will indicate the proper size drill bit to use. Use the same size drill bit as the diameter of the bolt. Drill through the tape and the wall. Drive Wall Anchors (1) DuoPower Nylon Anchors (2) Hollow Wall Anchors (2) Plastic Anchors (12) Borefast (13) Drive Wall Anchors (1) DuoPower Nylon Anchors (2) Hollow Wall Anchors (2) Plastic Anchors (12) Plastic Toggles (2) Ribbed Plastic Anchors … A simple plastic drill chart sheet with perfect round holes and markings on it lets you do a couple of things. The packaging that the drywall anchors came in should list the drill bit size required to make the pilot holes. When the anchor is fully inserted, the front edge of the lip should be flush with the wall. In case you need to drill a hole and thread it for a screw or bolt. Use a drill bit that's the same size as the dry wall anchor. © Copyright 2020 Hearst Communications, Inc. In other words, use a 5.0 mm drill bit for a yellow plug, a 6.0 mm drill bit for a red plug, a 7.0 mm drill bit for a brown plug, or a 10.0 mm drill bit for a blue plug. © Copyright 2020 Hearst Communications, Inc. To use dry wall anchors, start by drilling a hole into the wall you're installing the anchors in at a 90-degree angle. Get a Hammer Drill. That allows for us to accommodate both the softer material and the non-tapered screw tip. Instead of the entire thing going into the wall, an outer ring provides a measure of water resistance to protect the installation point. … A 5mm alligator anchor fits a hole size of 3/16 inches. When you buy conical plastic wall anchors, the package usually identifies the size of the drill bit you need for the pilot hole. To get the right-size hole, measure the shank of the drill bit against the front of the anchor -- its diameter should be the same size or 1/16 inch more than that to make the opening for the screw. There's no give with the tile though. Not all anchors are the same size or even the same style, meaning there is not one standard size drill bit for every anchor installation. The best way to drill a hole into concrete, concrete block, mortar and brick is to use a hammer drill. When hanging a heavy item, you should use a toggle bolt as they can hold well over 50lbs depending on the size of the anchor used and the thickness of the wall. Although these bolts have pointed ends that you can drive into the wall using a mallet or a hammer, a pilot hole will prevent accidental damage. Generally with drywall, the anchor is a little bigger than the hole, and you just force it in and it works fine. What Size Drill Bit to Use With Wall Anchors. Sleeve anchors require a hole that is the same diameter as the anchor being installed. Then select a toggle bolt sized to easily span the now gaping hole! Drill the hole to the specified embedment depth plus minimum hole depth overall (see table below) to allow the thread tapping dust to settle, and blow it clean using compressed air. You can also determine the size of the drill bit based on the screws you want to use. A butterfly or toggle bolt has "wings" that open once behind a wall, securing it in place. Measure the diameter of a conical wall anchor approximately 1/4 inch away from the opening with an accurate ruler and choose a drill bit of that diameter to drill the hole for it. Outward stress can pull it out of the hole. XSR - Extra Short Reach, SR - Short Reach, LR - Long Reach, XLR - Extra Long Reach. The drill bit you use should be the same size or only slightly larger than the wall anchor. For reference, I grabbed a caliper and started measuring things. 285 lbs. 325 lbs. 260 lbs. 5/8" - 1-3/16". The wall anchor container and the drill bits for your drill will all be clearly marked with the same measurements, making it easy for you to determine which one to use. With that all out of the way, let’s get started! If you drilled the right size hole, you won't be able to get it all the way in without tapping it with a hammer. Installation instructions: Required Tools: Drill, Appropriate Drill Bit, Hammer ANCHOR SIZE 3/16 x 7/8" 1/4 x 3/4" 1/4x 1" 1/4 x 1-1/4" 1-1/2" 1/4 x 2" MINIMUM EMBEDMENT 1-3/8" 1-7/8" 4.000 PSI CONCRETE 125 lbs. She enjoys exploring foreign locales and hiking off the beaten path stateside, snapping pics of wildlife and nature instead of selfies. These types of anchors aren't suitable for concrete or brick walls. She writes travel and budgeting tips and destination guides for USA Today, Travelocity and ForRent, among others. Expansion Anchors. The drill size chart below contains all commonly used centre drill bit sizes. You need the different sizes since drywall anchors come in all different shapes and sizes. ANCHOR SIZE 3/16" DRILL SIZE 3/16" MINIMUM EMBEDMENT 1-3/4" MAXIMUM ALLOWABLE LOAD (LBS.) This card allows you to find the size by measuring it with the indents in the card. Your drill bit should nearly mirror the diameter of the anchor, but try to keep it a tad smaller. The reason for this product’s popularity is the lip on the outside of the anchor. These are on most if not all of the drill bits sold today. Or you could be daring and try to drill the molly out. Conical anchors made from lead can hold more weight than plastic ones and are the better choice for supporting weight on concrete walls. Push the anchor in as far as it will go. If no stud is handy, you'll need to use a wall anchor when hanging a heavy object -- such as a headboard, large framed art or a mirror -- on drywall. 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