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2021 High quality Allen Cap Screw - Carbon Steel Grade 4.8 8.8 10.9 ZP Black Cross Recessed Countersunk Self-Drilling Screws – Qijing

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2021 High quality Allen Cap Screw - Carbon Steel Grade 4.8 8.8 10.9 ZP Black Cross Recessed Countersunk Self-Drilling Screws – Qijing Detail:

What is Countersunk Self-Drilling Screws?

Countersunk self-drilling screws are a type of screw used in a variety of fastening and fixing applications. they are produced in hardened carbon steel with bright zinc plated surface treatment. It is equipped with countersunk head. Typically made from stainless steel, countersunk self-drilling screws are characterized by their drill-shaped point. This point enables the screws to drill into materials without the need for pre-drilled pilot holes, resulting in a more efficient fastening process.

Countersunk self-drilling screws come in a variety of sub types, including different sizes. They are also available both with and without wings, providing a greater degree of flexibility for various projects.

Size

Cross-Recessed-Countersunk-Self-Drilling-Screws-(4)
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Screw head type

Tianjin-Fastener-Csk-Flat-Head-Zinc-Plated-Self-Drilling-2
Tianjin-Fastener-Csk-Flat-Head-Zinc-Plated-Self-Drilling-Screw

product features

Differences Between Self-drilling Screws and Self-tapping Screws?

Although they may sound similar and have strong resemblances in their physical appearance, self-tapping screws and self-drilling screws should not be confused. The two terms are often used interchangeably, but in fact, these are two different types of screw. Their differences are important when it comes to best uses and most suitable applications, so you should not be tempted to use one in place of the other as this could result in a weaker joint between materials.

Self-tapping screws tap their own threads but are unable to drill through materials like a sheet of metal. In this case, self-tapping screws would require a pilot hole. However, self-drilling screws feature a pointed drill bit on the screw, negating the need for a pilot hole as the screw can cut its own thread into the material. These screws are more versatile as they are also able to tap, similarly to self-tapping screws. This makes self-drilling screws highly adaptable and ideal for working with a wider range of materials in different environments and industries.

Applications

Countersunk self-drilling screws are engineered to be corrosion resistant and come in various sizes and materials. Depending on the size, the applications of the countersunk self-drilling screws can vary – the smaller screws are used in applications like fixing thin gauge metals and fixing metal to wood. The larger screws are used in roofing and other industries which require self-drilling through tough metals. Our screws come in stainless steel, alloy steel, carbon steel and other materials which prevents corrosion.

If the counersunk self-drilling screws are used in extremely hard materials, it is advised to use it after a pilot hole has been drilled. Our screws are case hardened and heat-treated for applications requiring fastening of soft materials on hard ones. With a lower installation torque, the threads on these screws allow for a quick transition from drilling to tapping. For effective penetration, make sure that at least three threads of the fastener are inside the material.

application

Product Parameters

Product name Cross recessed CSK self-drilling screws
Standard GB, DIN, ISO, ANSI/ASTM, BS, BSW, JIS etc
Size M2-M24, or non-standard as request&design
Material Stainless Steel SS201, SS303, SS304, SS316, SS410, SS420
SteelC45(K1045), C46(K1046),C20,etc
BrassC36000 ( C26800), C37700 ( HPb59), C38500( HPb58)etc.
Bronze C51000, C52100, C54400, etc.
Iron 1213, 12L14,1215,etc.
Aluminum Al6061, Al6063, etc.
Alloy steel SCM435,10B21, C1033,etc.
Carbon steel C1006,C1010,C1018,C1022,C1035K,12L14,etc.
 Non-standards OEM is available, according to drawing or samples

Packaging and Shipment

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Our Market

major-market

Our Customers

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Product detail pictures:

2021 High quality Allen Cap Screw - Carbon Steel Grade 4.8 8.8 10.9 ZP Black Cross Recessed Countersunk Self-Drilling Screws  – Qijing detail pictures

2021 High quality Allen Cap Screw - Carbon Steel Grade 4.8 8.8 10.9 ZP Black Cross Recessed Countersunk Self-Drilling Screws  – Qijing detail pictures

2021 High quality Allen Cap Screw - Carbon Steel Grade 4.8 8.8 10.9 ZP Black Cross Recessed Countersunk Self-Drilling Screws  – Qijing detail pictures

2021 High quality Allen Cap Screw - Carbon Steel Grade 4.8 8.8 10.9 ZP Black Cross Recessed Countersunk Self-Drilling Screws  – Qijing detail pictures


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We consistently carry out our spirit of ''Innovation bringing development, Highly-quality ensuring subsistence, Management promoting benefit, Credit attracting customers for 2021 High quality Allen Cap Screw - Carbon Steel Grade 4.8 8.8 10.9 ZP Black Cross Recessed Countersunk Self-Drilling Screws – Qijing, The product will supply to all over the world, such as: Greenland, Ethiopia, Marseille, You can always find the products you need in our company! Welcome to inquire us about our product and anything we know and we can help in auto spare parts. We are looking forward to work with you for a win-win situation.
  • The company comply with the contract strict, a very reputable manufacturers, worthy a long-term cooperation.
    5 Stars By Vanessa from Senegal - 2017.07.28 15:46
    The company has rich resources, advanced machinery, experienced workers and excellent services, hope you keep improving and perfecting your products and service, wish you better!
    5 Stars By Odelette from Panama - 2018.09.19 18:37

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