Machine Screws
Machine screws are a type of fastener designed to secure two or more objects together by threading into a pre-tapped hole or nut. They are characterized by their uniform and straight threads, which enable them to create a strong and reliable connection.
Machine screws typically have a flat or rounded head that may include various drive types, such as slotted, Phillips or hexagonal. The choice of drive type depends on the ease of installation and the desired level of tamper resistance. Additionally, machine screws may be made from different materials like steel, stainless steel, brass or other alloys, depending on the specific requirements of the application and the desired level of corrosion resistance.
Machine screws are commonly used in machinery, equipment and various other applications where a tight and secure joint is required.
Tapping Screws
Tapping screws, also known as self-tapping screws, are a type of fastener designed to create threads within a material as they are driven into it. Unlike traditional screws or machine screws that require pre-drilled holes or pre-tapped threads, tapping screws have a unique design that allows them to cut or form their own threads as they are screwed into the material. This makes them particularly useful for joining materials together without the need for prior preparation.
Tapping screws typically have sharp, pointed tips that help them initiate the thread-forming process. As they are turned clockwise, the screws cut into the material, creating a threaded path that securely holds the screw in place. This thread-forming capability is especially handy when working with materials like metal, plastic or wood, where traditional screws might not easily penetrate or hold.
Tapping screws come in various head styles, including flat, pan, oval, and hex heads, among others. They may also have different drive types, such as Phillips, slotted or Torx, to suit various installation tools and preferences.
Thread Cutting Screws
Thread cutting screws, also known as thread-forming screws, are a type of fastener designed to create internal threads within a material as they are driven into it. These screws have unique features that allow them to cut or form threads into the material, creating a secure and reliable connection without the need for pre-drilled holes or pre-tapped threads.
Unlike tapping screws, which displace material to create threads, thread-cutting screws actually remove material as they are turned, effectively cutting into the material to form threads. This cutting action requires less force compared to tapping screws and results in a thread that matches the screw's own threads precisely, providing a tight fit and strong connection.
Thread-cutting screws typically come with a variety of head styles, such as flat, pan, oval and hex heads, and they may feature different drive types like Phillips, slotted or Torx.
Thread-cutting screws are often used in metal-to-metal applications, especially when the materials being joined are relatively hard or resistant to thread formation. They are commonly used in industries like manufacturing, construction and automotive, where the integrity of the connection is crucial.
Thread Rolling Screws
Thread rolling screws are tapping screws that form their mating internal thread by displacing material adjacent to the hole and pushing it outwards into the open spaces between the threads of the screw.Thread rolling screws are best used in fairly thin sections of malleable materials, such as plastic or wood. Unlike thread cutting screws, thread rolling screws do not contain cutting slots and do not produce chips. 694.png
Drywall Screws
Drywall screws are specialized fasteners designed for attaching gypsum board, commonly known as drywall or plasterboard, to framing structures like wood or metal studs or joists.
Drywall screws are used in both residential and commercial construction, and are designed with specific features to make the installation of drywall more efficient and effective. The process typically involves driving the screws through the drywall and into the framing at regular intervals, usually around the perimeter and along the center of the studs. Proper spacing of screws helps prevent the drywall from sagging or creating visible seams.
Deck Screws
Deck screws are specialized fasteners designed for use in outdoor decking projects. They are specifically engineered to provide a secure and durable connection between decking boards and the underlying joists or framework.
In addition to traditional wood deck screws, there are also deck screws designed specifically for use with composite decking materials. These screws are engineered to work well with the unique properties of composite materials, such as their reduced expansion and contraction compared to natural wood.
Self Drilling Screws
Self-drilling screws, also known as self-drilling or Tek screws, are a type of fastener that combines the functions of drilling and fastening into a single step. These screws are designed to create their own pilot holes as they are driven into a material, making them particularly useful for attaching materials together without the need for pre-drilled holes.
The process of using self-drilling screws is straightforward:
- The screw is placed on the surface of the material to be attached.
- Pressure is applied while turning the screw clockwise using a power drill or screwdriver.
- As the screw turns, the drill point cuts through the material, creating a hole for the screw to advance.
- The screw then threads into the newly formed hole, securing the materials together.
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Self Piercing Screws
Self-piercing screws, also known as self-piercing tapping screws, are a type of fastener designed to create their own holes and threads in relatively thin materials. These screws are commonly used to join two thin sheets of metal or other materials together without the need for pre-drilled holes or pre-tapped threads.
Self-piercing screws are commonly used in applications where two thin materials need to be joined together, such as in automotive manufacturing, HVAC systems, roofing and other sheet metal work. They offer a fast and efficient method of attaching materials without the need for additional drilling or tapping processes.
Sems
A SEMS assembly is a type of fastener that combines a screw and a washer into a single pre-assembled unit. The washer is attached to the screw in various ways, such as by being permanently attached or captive to the screw's threads. This design provides several advantages in terms of efficiency, ease of assembly and functionality.
SEMS assemblies are commonly used in a wide range of industries, including automotive, electronics, appliances and construction, where they offer convenience, reliability, and efficient assembly solutions.
Set Screws
Set screws, also known as grub screws, are a type of threaded fastener designed to secure one object within or against another object. Unlike traditional screws that are used to fasten materials together, set screws do not have a traditional head like a Phillips or flat head. Instead, they typically have a hexagonal socket or an allen wrench socket (hex key) on one end, allowing them to be tightened using an appropriate tool.
Set screws are used in various applications:
- They are used to secure shaft collars onto shafts, preventing them from sliding or rotating.
- Set screws are employed to secure gears and pulleys onto shafts in machinery and mechanical systems.
- They can lock components like knobs, handles, and levers onto shafts or threaded studs.
- Set screws are used in applications where adjustable components need to be locked in place, such as in various machinery setups.
- Set screws are used in pillow block bearings and other bearing housings to secure the bearing on the shaft.
When using set screws, it's important to ensure proper torque and installation. Over-tightening can damage threads or cause other problems, while insufficient tightening might lead to components becoming loose.
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Metric Screws
Metric screws are a versatile type of fastener, featuring a raised helical thread and a sharp or flat point, and are used to fasten pieces of metal, wood or plastic. Metric screws can have a straight or tapered shaft and can be tightened using a screwdriver, wrench or hex wrench, depending on the screw head style.
Metric screws come in a wide range of types, shapes and sizes, each designed for specific purposes. Their versatility, ease of use and ability to create strong connections have made them essential components in various applications.
Coburn-Myers carries an extensive selection of metric screws in the material, coating, thread pitch, size and head style you need. Click into any of the following products to view available options. For more information regarding our selection of metric screws, get in touch with our sales team or call us toll-free at 800.662.7459.
Stainless Screws
Stainless screws are a versatile type of fastener, featuring a raised helical thread and a sharp or flat point, and are used to fasten pieces of metal, wood or plastic. Stainless crews can have a straight or tapered shaft and can be tightened using a screwdriver, wrench or hex wrench, depending on the screw head style.
Stainless screws come in a wide range of types, shapes and sizes, each designed for specific purposes. Their versatility, ease of use and ability to create strong connections have made them essential components in various applications.
Coburn-Myers carries an extensive selection of stainless screws in the material, coating, thread pitch, size and head style you need. Click into any of the following products to view available options. For more information regarding our selection of screws, get in touch with our sales team or call us toll-free at 800.662.7459.