Truss Head Screws: Oem Self-Tapping Pricelist Guide

Truss head self-tapping screws are a type of fastener used to secure metal sheets. They are characterised by their wide, slightly domed heads and strong holding power. These screws are designed to provide a secure hold while distributing pressure evenly across the surface of the material. They are available in various lengths and materials, including stainless steel and carbon steel, to suit different applications and sheet thicknesses. The price of truss head self-tapping screws can vary depending on the quantity, material, and specific features of the screws.

Self-tapping screws for metal sheets

Self-tapping screws are used to fasten a wide range of materials, including sheet metal, wood, plastic, and drywall. They are aptly named, as their sharp point and hardened, deep threads allow them to "tap" their own internal threads into a pre-drilled hole in the mating substrate.

When it comes to working with metal sheets, there are a few types of self-tapping screws that are particularly useful:

Truss Head Self-Tapping Screws

Truss-head self-tapping screws feature a low-profile, wide head that provides an increased bearing surface. This makes them ideal for applications that require heavy-duty bearing or for attaching metal to metal. They are often used in metal roofing and siding to attach roofing sheets and metal siding.

Pan Head Self-Tapping Screws

Pan-head self-tapping screws have a rounded surface that provides more surface area for the screwdriver to engage with. This enlarged surface area helps prevent slippage during installation, making them suitable for a wide range of applications.

Hex Washer Head Self-Tapping Screws

Hex washer head self-tapping screws have a large head that allows for more torque to be applied during installation. The hexagonal shape also provides security and reduces the potential for stripping the screws.

Self-Drilling Self-Tapping Screws

Some self-tapping screws are also self-drilling, which means they have a drill-like fluted tip that can penetrate and fasten materials without the need for a pilot hole. Self-drilling screws save time and effort by drilling, tapping, and fastening materials in a single operation. They are suitable for use with sheet metal, wood, plastic, and drywall.

When choosing self-tapping screws for metal sheets, it is important to consider the size, length, head style, drive style, material, and finish that are appropriate for your specific application.

Self-tapping screws for roofing

Self-tapping screws are used for a variety of applications, including roofing and siding. They are designed to tap threads and are typically used for quick fastening of metal roof or wall panels to wood.

Types of Self-Tapping Screws

TRUSS-Tite™

TRUSS-Tite™ self-tapping screws are designed for fixing steel roofs and floor trusses. They have a blunt head and are used for truss components assembly, fixing into steel with pre-punched or pre-drilled holes. The blunt, slightly tapered leading threads make it easier to fix the sheets down.

TIMBER-Tite™

TIMBER-Tite™ self-tapping screws are designed for fixing metal roofing sheets or wall claddings to timber. They have a sharp point, which is ideal for fixing roof sheeting to timber. Longer versions are used for crest fixing, while shorter versions are designed for valley fixing.

Features of Self-Tapping Screws for Roofing

When choosing self-tapping screws for roofing, there are several features to consider:

• Drilling Point: Shorter self-tapping screws have a "reduced" drilling point, which provides the same function as a sharp drilling point but drills faster through thin metal sheeting.
• Upper Threads: The upper threads of the screw should be larger in diameter compared to the lower threads to provide good pullout strength.
• Shank Design: A knurled, fluted, or slotted shank design helps to clear excess swarf that could otherwise damage EPDM washers and cause leaks.
• Corrosion Resistance: Look for self-tapping screws that are made of corrosion-resistant materials, such as stainless steel, to prevent rust and ensure the longevity of your roofing.

Examples of Self-Tapping Screws for Roofing

• Mxuteuk Self-Tapping Screws: These screws are made of 410 stainless steel and are available in various sizes, including 1/2", 5/8", 3/4", 1", and 1-1/4". They have a modified truss head and are suitable for metal, wood, and plastic.
• VIGRUE Self-Tapping Screws: This assortment kit includes 425 pieces of black oxide and stainless steel self-tapping screws in #8 and #10 sizes, with lengths ranging from 1/2" to 1-1/2".
• Tek Self-Drilling Screws: These screws are designed for metal-to-metal or metal-to-wood applications and are available in various sizes and pack quantities.

When choosing self-tapping screws for roofing, it is important to consider the specific requirements of your project, such as the type of material being fastened and the length of the screws needed.

Self-tapping screws for indoor use

Self-tapping screws are a versatile and convenient option for creating threads in a variety of materials. They are commonly used in indoor applications such as fastening metal brackets onto wood, attaching aluminium sections, or inserting screws into plastic housings.

When selecting the right self-tapping screw for indoor use, it is important to consider the type of material it will be used on, as well as the size, length, and desired torque or tightening force required. Self-tapping screws are designed for specific materials, including wood, metal, and plastic, and come in various head designs and thread patterns.

For softer materials such as wood or plastic, self-tapping screws can have a tapered gimlet point that forms a hole by displacing the surrounding material. This eliminates the need for a sharp tip and can be helpful for packaging and handling. Type B tips are blunt and intended for use with a pre-drilled pilot hole, often in sheet materials.

Thread-forming self-tapping screws, also known as thread-rolling screws, displace material without removing it and create zero clearance between the screw and the material. They are commonly used on plastic and thin metal sheets. On the other hand, thread-cutting self-tapping screws have sharp cutting surfaces that remove material as they are inserted, similar to a tap.

The installation process for self-tapping screws is generally easy and can be done with power drills or screwdrivers. However, it is important to avoid over-tightening, as it can cause the screw to strip and reduce its holding power. Additionally, ensuring the correct size and shape of the pilot hole is crucial for proper thread formation and secure fastening.

Self-tapping screws are available in various lengths, with common sizes ranging from 1/2" to 2". They are often made of stainless steel, carbon steel, or alloy steel, and can be found in different finishes, such as black oxide or zinc.

When purchasing self-tapping screws for indoor use, consider the specific requirements of your project, including the type of material, torque needed, and aesthetic preferences. By choosing the appropriate self-tapping screw and following proper installation techniques, you can ensure a secure and reliable hold for your indoor applications.

Self-tapping screws for outdoor use

Self-tapping screws are ideal for outdoor use, especially in wood, plastic, and metal surfaces. They are designed to drill their own hole as they are driven into the material, eliminating the need for pre-drilling. This makes them a convenient and efficient fastening option for outdoor projects.

When choosing self-tapping screws for outdoor applications, consider the following:

Material Compatibility

Select self-tapping screws that are compatible with the outdoor materials you are working with. Common outdoor materials include wood, plastic, and metal. Stainless steel self-tapping screws are a popular choice for outdoor use due to their corrosion resistance and durability.

Weather Resistance

Ensure the screws are weather-resistant and can withstand the elements, such as rain, snow, and extreme temperatures. Stainless steel or screws with a protective coating, such as zinc plating or black oxide, can provide enhanced corrosion and rust resistance.

Screw Head Style

Consider the type of screw head that will best suit your outdoor application. Truss head self-tapping screws feature an elongated, low-profile head with a rounded top, providing a balance between strength and aesthetics. They are commonly used in applications where a flush finish is desired.

Screw Size and Length

Choose the appropriate screw size and length based on the thickness and type of material you are working with. Self-tapping screws are available in various sizes and lengths, ensuring you can find the right fit for your outdoor project.

Quantity and Cost

Plan the quantity of screws required for your outdoor project to ensure you have enough. Buying in bulk or purchasing assorted screw kits can often result in cost savings. Compare prices from different suppliers to find the best value.

• Amazon: 100-piece #8 x 3/4" black self-tapping screws for metal, made of 410 stainless steel with a truss head.
• Amazon: 120-piece #8 x 3/4" black stainless steel truss head self-tapping screws for sheet metal.
• Amazon: 100-piece #8 x 1/2" to 1-1/4" black self-tapping screws for metal with a modified truss head, made of 410 stainless steel.
• Amazon: 100-piece #8 x 1/2" and 5/8" truss head black self-tapping screws, made of 410 stainless steel.
• Amazon: 100-piece #8 x 1" wood screws with a truss head, made of 410 stainless steel.

Self-tapping screws for marine use

Marine-grade self-tapping screws are designed for boat construction and repairs. They are popular because they can cut their own threads when driven into materials, making them ideal for securing parts without the need for pre-drilling. When choosing self-tapping screws for marine use, it is essential to consider the corrosive nature of the marine environment and select a suitable material to ensure the longevity of your boat's structure.

Materials for Marine-Grade Self-Tapping Screws:

• Stainless Steel: Offers excellent corrosion resistance, especially grades like 316 stainless steel, which is ideal for continuous water exposure near the ocean. 304-grade stainless steel is also a good option.
• Silicone Bronze: Perfect for wooden boat construction as it provides superior corrosion resistance and compatibility with wood.
• Brass: Brass screws are another option for corrosion resistance in marine environments.
• Galvanized Steel: A cost-effective option with good corrosion resistance due to its zinc coating.

Head Styles for Marine-Grade Self-Tapping Screws:

• Flat Head: Commonly available and suitable for various marine applications.
• Oval Head: Provides a more rounded profile and is available with Phillips or square drive.
• Pan Head: Offers a larger surface area and is available with Phillips or square drive.
• Truss Head: Provides a unique head style and is available with Phillips drive.
• Hex Head: Provides a hexagonal head for a different style and application.

When selecting and installing self-tapping screws for marine use, it is important to follow best practices, including pre-drilling for certain materials, using a marine-grade sealer, avoiding mixing metals, and conducting regular inspections for corrosion or loosening.

Frequently asked questions