Expansion Screws, also known as wall anchors or molly bolts, are designed to provide a secure and strong hold in materials that are otherwise too weak or brittle to support the weight of an object. They feature a threaded screw that is inserted into a pre-drilled hole, with an expandable sleeve or wedge at the end. As the screw is tightened, the sleeve or wedge expands, creating a firm grip against the inside of the hole. This expansion mechanism distributes the load over a larger surface area, significantly increasing the holding power. Expansion screws come in various sizes and types, including metal and plastic, suitable for different applications and materials such as concrete, brick, drywall, and plaster. They are easy to install, requiring only a drill, the appropriate size drill bit, and a screwdriver, making them a popular choice for hanging shelves, mirrors, and other heavy items on walls.
Expansion screws, also known as wall anchors or molly bolts, are widely used in construction and home improvement projects for securing objects to walls, ceilings, and other surfaces. They are particularly useful when working with materials that are not strong enough to hold screws or nails directly, such as drywall, plaster, brick, or concrete. Expansion screws consist of a screw and an expandable sleeve; as the screw is tightened, it causes the sleeve to expand, creating a secure grip within the material. This makes them ideal for hanging heavy items like shelves, mirrors, or cabinets, ensuring they remain safely attached without damaging the surface. Additionally, expansion screws come in various sizes and types, including plastic, metal, and toggle bolts, each designed to meet specific weight requirements and installation conditions, making them a versatile solution for a wide range of mounting needs.
Expansion screws are available in different materials, such as stainless steel
| Size | Max. Torque | Drill |
| 1/4” | 5 ft. lbs. | 1/2" |
| 5/16” | 7 ft. lbs. | 5/8" |
| 3/8” | 10 ft. lbs. | 3/4" |
| 1/2” | 20 ft. lbs. | 7/8" |
| 5/8” | 30 ft. lbs. | 1" |
| 3/4” | 40 ft. lbs. | 1-1/4" |
Note: We offer tailored screw solutions to your specific needs, with various options of materials, screw coatings, head/thread/point/shank types, and sizes.
