Csk Machine Screw Sizes: Understanding The Specifications

CSK machine screw sizes vary depending on the material and manufacturer. For example, brass CSK head machine screws are available in sizes ranging from 4 mm to 12 mm, while stainless steel (S.S.) CSK head machine screw grade 304 (A2-70) and grade 316 (A4-70) are available in sizes ranging from 2 mm to 12 mm. Zinc-plated CSK head machine screws are also available in sizes ranging from 2 mm to 20 mm. In addition, CSK machine screws are available in various standards and finishes, such as steel, stainless steel 304 (A2), and stainless steel 316 (A4), with yellow zinc and zinc-plated finishes.

CSK machine screw materials

CSK machine screws are available in a variety of materials, each with its own advantages and applications. Here is an overview of the commonly used materials for CSK machine screws:

Stainless Steel

CSK machine screws made of stainless steel offer excellent corrosion resistance and durability. They are commonly used in applications where corrosion is a concern, such as in electrical components and machinery. Stainless steel CSK screws are typically available in two grades: 304 (A2-70) and 316 (A4-70). These grades denote the specific composition of the stainless steel, with A2 and A4 being common designations for these grades.

Carbon Steel

Carbon steel is another popular material for CSK machine screws. It provides good strength and can withstand wear and tear. Carbon steel CSK screws are often used in applications where high strength and durability are required, such as in the assembly of machine components.

Alloy Steel

Alloy steel is also used for CSK machine screws, offering enhanced properties compared to standard carbon steel. Alloy steel CSK screws can bear more wear and tear and provide improved corrosion resistance. The specific alloy composition can vary, with some alloys designed for special applications.

Brass

Brass CSK machine screws are another option, providing good corrosion resistance and a visually appealing finish. Brass screws are commonly used in applications where corrosion resistance is important, and they are available in a range of sizes.

Zinc-Plated

Zinc-plated CSK machine screws offer enhanced corrosion protection through the zinc coating. The zinc plating can be applied to various base materials, such as steel, to improve their resistance to rust and oxidation. Zinc-plated CSK screws are available in a range of sizes and are suitable for both indoor and outdoor applications.

CSK head types

CSK, short for countersunk, screws have a flat head with a cone shape underneath. The screw is designed to fit into a grooved hole, creating a flat surface when installed. CSK head machine screws are typically fastened by a nut or female thread inside the material.

CSK screws are available in various materials, including brass, stainless steel, and zinc plating. The size range for brass CSK head screws is typically from 4 mm to 12 mm. Stainless steel CSK head screws are available in two grades: Grade 304 (A2-70) and Grade 316 (A4-70). Both grades offer sizes ranging from 2 mm to 12 mm. Zinc-plated CSK head screws are available in sizes from 2 mm to 20 mm.

In addition to the material and size, CSK screws can also be differentiated by their drive type. One common type is the Phillips drive, which has a cross-shaped recess and is often used for electrical and kitchen applications. Another type is the hex-lobular drive, which has a star-shaped recess and is designed to resist cam-out, making it suitable for applications where higher torque is required.

CSK screws are versatile and widely used in various applications, including home appliances, office equipment, machinery, car parts, communication equipment, and ship assembly. They are also available in different thread types, such as full thread and half thread, to accommodate different fastening requirements.

CSK machine screw dimensions

CSK machine screws, or countersunk head screws, are a type of fastener with a unique head design. The head of a CSK screw is flat with a cone-shaped underside, requiring a corresponding groove for a flat surface installation. These screws are typically fastened by a nut or a female thread inside the material into which they are being installed.

CSK machine screws are available in various materials, including brass, stainless steel, and zinc plating. The dimensions of CSK machine screws vary depending on the material and the specific application. For example, brass CSK head machine screws are commonly available in sizes ranging from 4 mm to 12 mm. Stainless steel CSK head machine screws are also available in a wide range of sizes, with Grade 304 (A2-70) and Grade 316 (A4-70) being common options, ranging from 2 mm to 12 mm. Zinc-plated CSK head machine screws are available in sizes from 2 mm to 20 mm.

The length of the screw is another important dimension to consider when selecting CSK machine screws. The length can vary depending on the specific application and the thickness of the material being fastened. For example, common lengths for stainless steel CSK head machine screws include 8 mm, 10 mm, and 12 mm. It's important to select the appropriate length to ensure a secure fastening without penetrating too far into the material.

In addition to the head style and length, the thread size and type of drive are also important considerations. CSK machine screws typically have a Phillips or slotted drive, and the thread size can vary depending on the specific application. For example, M3.5 x 20 mm is a common size for CSK machine screws used in DIY electrical and kitchen furniture applications.

When selecting CSK machine screws, it's important to consider the material, dimensions, length, thread size, and drive type to ensure compatibility with the specific application. These screws are versatile and can be used in a wide range of industries, including home appliances, machinery, car parts, communication equipment, and ship assembly.

CSK machine screw applications

CSK machine screws are used in a variety of applications across industries. They are commonly used for the assembly of machine and electrical components, such as DIY electrical and kitchen furniture, as well as in the home and office appliances, machinery, car parts, communication equipment, and ship assembly.

CSK Phillips head screws are similar to bolts in that they have a head and a shank. They can be used with a nut and come in a range of thread patterns. They can bring a flat finish to the surface of operation. However, it is important to note that the diameter of these bolts is small, and they feature a straight shank with a blunt end. A screwdriver should be used with these screws instead of a wrench.

CSK head screws require the hole of insertion to be pre-drilled and also need a washer to keep them in place. They are available in different materials, such as stainless steel, carbon steel, and alloy steel, which makes them more resistant to corrosion and wear and tear.

The versatility of CSK head screws lies in their ability to be used on a wide range of joints, irrespective of their location in the assembly. They are an excellent choice when the head of the screw needs to sink into the material thoroughly.

CSK machine screw finishes

CSK machine screws are available in a variety of materials and finishes. The most common materials are brass, stainless steel, and zinc-plated steel.

Stainless steel CSK machine screws are available in different grades, including 304 (A2-70) and 316 (A4-70). They offer excellent corrosion resistance and are suitable for various applications, including machine and electrical component assembly. Stainless steel CSK screws can also be passivated, resulting in a self-colour finish.

Brass CSK machine screws provide good corrosion resistance and are available in sizes ranging from 4 mm to 12 mm.

Zinc-plated CSK machine screws offer a protective coating that enhances corrosion resistance. They are available in bright zinc and yellow zinc finishes and can be made from steel or stainless steel.

Other finishes for CSK machine screws include hot-dip galvanised (HDG), sherardized, electroless nickel, dacromet, geomet, and PTFE. These finishes can be applied to various materials, including stainless steel, brass, and zinc-plated screws, to further enhance corrosion resistance or achieve specific performance requirements.

CSK machine screws are also available in other materials, such as carbon steel, alloy steel, and plastic. These screws can be customised to meet specific application needs and environmental conditions.

Frequently asked questions