The Ultimate Guide To Screw Anchors With Internal Threaded Heads

Screw anchors with internal threaded heads are a type of fastener used to suspend threaded rods or hang items such as cable trays, pipes, and electrical conduits. They are designed for efficient installation and can be used in a variety of base materials, including concrete, brick, block, wood, and steel. Screw anchors with internal threads come in various sizes and types, such as machine screw anchors, rod hanger screw anchors, and concrete screw anchors, and are suitable for applications requiring corrosion resistance or close-to-edge fixing.

Concrete screw anchors

• Wedge Anchors: Installed into a pre-drilled hole using a concrete drill bit, the wedge is expanded by tightening a nut.
• Adhesive Connectors: Create strong and durable bonds for rod, rebar, and smooth dowels in concrete, masonry, and other materials.
• Drop-In Anchors: Used in flush-mount applications in concrete and masonry base materials. They are internally threaded concrete expansion anchors.
• Hammer Drive Anchors: Deliver strong connections for applications using concrete or grout-filled blocks.
• Sleeve Anchors: Versatile style that can be used in all types of solid base materials such as concrete, block, and brick.
• Helical Wall Ties: Used to anchor building facades to structural members or to stabilize brick walls.

When installing concrete screw anchors, it is important to use the correct size of the masonry drill and to drill the hole at the appropriate depth. The hole should then be cleaned using a nylon brush and compressed air. The anchor is then inserted into the socket driver, which is mounted into the chuck of the drill, and installed into the pre-drilled hole. Finally, the appropriate diameter of the threaded rod or bolt is threaded into the anchor.

Drywall anchors

There are many varieties of drywall anchors, including plastic or screw-in anchors, molly bolts, hollow wall anchors, self-drilling anchors, toggle and butterfly anchors. The most common drywall anchors expand into the opposite sides of the wall for a secure hold. They are often made of plastic, making them budget-friendly and easy to use.

Plastic ribbed anchors have a sharp thread, a pointed tip on one end, and a flange on the other. They expand within the wall when a screw is inserted. They are available in various sizes and lengths and are installed by drilling a hole, inserting the anchor, and tapping it into place. The flange at one end prevents them from being pulled through the wall.

Winged plastic expansion wall anchors have wings that prevent the anchor from pulling out of the wall. Screw-in anchors are typically used for lighter items such as picture frames, small shelves, or light fixtures. They are easy to install and do not require pre-drilling, making them a popular choice for DIY projects.

Molly bolts, or anchor screws, have a metal sleeve with a screw attached to one end and a toggle at the other. The underside of the molly wall anchor head has sharp tips that pierce the drywall surface. When inserted, the metal sleeve expands, providing a secure and stable anchor.

Self-drilling wall anchors are ideal for projects that require drilling through drywall. They feature sharp teeth, so there is no need for pre-drilling. They provide greater support than expansion anchors but can damage the drywall if overtightened.

Toggle bolts have a threaded rod with wings attached to the end. When inserted, the wings fold flat against the bolt and spread out to distribute the weight evenly. They are good for hollow walls where expansion anchors may not work.

To install a drywall anchor, start by drilling a pilot hole in the wall using a drill bit smaller than the width of the anchor. Place the anchor in the hole and tap it into the wall until it is completely inserted. For toggle bolts and steel hollow wall anchors, a larger pilot hole is required. Once the anchor is inserted, use a screwdriver to drive the screw securely into the anchor.

Threaded rod hangers

These hangers come in two main varieties: vertical and horizontal. Vertical rod hangers are used in overhead applications, while horizontal rod hangers can be installed into the sides of joists, columns, and overhead members. They are designed to be easy to use and provide a convenient one-piece fastening system.

Some manufacturers of threaded rod hangers include Simpson Strong-Tie and LH Dottie, offering a range of products with different features. For example, the Simpson RWV37200 is a vertical wood rod hanger with a zinc finish, available in packs of 25. LH Dottie offers a range of bottom and side mount rod hangers suitable for wood, metal, and concrete bases.

When choosing a threaded rod hanger, it is important to consider the specific application, base material, and load requirements. Proper installation tools, such as a rod hanger nut driver and the correct size socket driver, are also necessary to ensure a secure and safe installation.

Hex-washer-head concrete anchors

To install hex-washer-head concrete anchors, you will need to follow the correct procedure. First, use the correct size masonry drill and drill a hole that is at least one anchor diameter deeper than the calculated embedment depth. Clean the hole using a nylon brush and compressed air. Select the appropriate size socket driver and mount it into the chuck of the drill. Insert the head of the anchor into the socket driver. Press the tip into the pre-drilled hole and install it with a smooth, steady motion until the anchor is firmly seated against the concrete. Finally, thread the appropriate diameter steel threaded rod or threaded bolt into the anchor, ensuring it fully engages the thread length of the anchor.

When purchasing hex-washer-head concrete anchors, it is important to consider the specific requirements of your project. Ensure that you select the appropriate size and length of the anchor for your intended application. Additionally, pay attention to the weight-bearing capacity and the number of anchors required for your project. By following the installation instructions carefully, you can ensure a secure and long-lasting fastening solution for your concrete surfaces.

Zinc-plated steel mushroom-head toggle bolt anchors

Installation

To install a mushroom-head toggle bolt anchor, follow these steps:

• Mark the hanging point with a pencil.
• Drill a hole using the recommended drill bit size, which is typically the width of the toggle ends.
• Slip the bolt through the hole of the object you're hanging and thread on the toggle with the tips facing the screw head.
• Squeeze the toggle closed and tap the bolt, toggle, and all into the wall.
• Tighten the bolt, pulling back on the threads until the toggle grabs onto the back of the wall; tighten until snug.

Specifications

The Everbilt zinc-plated steel mushroom-head toggle bolt anchors come in a size of 1/8" x 2" with a screw size of 6-32 x 2" and a drill bit/hole size of 3/8". They are suitable for light-duty anchoring and can be used in hollow block or drywall.

Similar Products

Similar products include:

• Rierdge 3/16" Metal Toggle Bolts
• Swpeet Assorted Toggle Bolt and Wing Nut Kit
• KURUI 1/4 Toggle Bolts for Drywall

Frequently asked questions