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  • Bi-Metal Self-Drilling Screw (Lesson 7)

    Bi-Metal Self-Drilling Screw (Lesson 7)

    Bi-Metal Self-Drilling Screw combine two steels to yield best-in-class performance, from efficient self-drilling to decades of rust-free security. Corrosive damage is pertinent to all construction jobs and should therefore be accounted for during the design phase of any project. Often observed ...
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  • Bi-Metal Self-Drilling Screw (Lesson 6)

    Bi-Metal Self-Drilling Screw (Lesson 6)

    THE SOLUTION AISI 300 Series based bi-metal self-drilling and self-tapping screws: The solution to manufacture the most ideal self-drilling and self-tapping screw, is to: Combining the main part of a screw made out of AISI 300 series Stainless Steel.  Having a drill-point and the first tap...
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  • Bi-Metal Self-Drilling Screw (Lesson 5)

    Bi-Metal Self-Drilling Screw (Lesson 5)

    BI-METAL BACKGROUND In the construction and manufacturing fastening industries two things has always been very important: Sustainability – how long will my fastener last in a given environment? Efficiency – how quickly can I fasten it? A game changer in the fastening industry was the invention ...
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  • Bi-Metal Self-Drilling Screw (Lesson 4)

    Bi-Metal Self-Drilling Screw (Lesson 4)

    300 stainless steel–the undefeated champion for screws’ corrosion resistance Not all stainless steel is created equal. While all offer some degree of corrosion resistance, none matches the protection of 300 series metals. This includes the ever-popular 400 series steels; though suitable for some...
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  • Bi-Metal Self-Drilling Screws (Lesson 3)

    Bi-Metal Self-Drilling Screws (Lesson 3)

    Bi-Metal Self-Drilling Screws combine two steels to yield best-in-class performance, from efficient self-drilling to decades of rust-free security. Maximize efficiency no matter the substrate Bi-Metal Self-Drilling Screws meld 304 stainless steel and alloy steel to leverage their differing stre...
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  • Bi-Metal Self-Drilling Screws (Lesson 2)

    Bi-Metal Self-Drilling Screws (Lesson 2)

    The natural corrosion resistance of these stainless steel Tek screws is further enhanced with a silver slide coating. In addition to providing extra protection against damaging corrosion, the coating also works to reduce screw-in resistance, making the job easier and quicker. All in all, the scr...
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  • BI-METAL SELF DRILLING SCREWS(Leason-1)

    BI-METAL SELF DRILLING SCREWS(Leason-1)

    Connecting two sheets of stainless steel material can be problematic for a number of reasons. Self-drilling screws can help to solve some of these issues and DD Fasteners Bi-Metal can supply these essential components in a game-changing format made using two types of steel. Self-drilling screws...
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  • Dacromet Surface is it suitable for you?

    Dacromet Surface is it suitable for you?

    During use, steel parts are prone to electrochemical corrosion and chemical corrosion due to the influence of the working environment. It is common in industrial applications to improve the surface properties of workpieces through surface treatment technology and enhance the anti-corrosion prope...
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  • Drilling screw application

    Drilling screw application

    Self-drilling and self-tapping screws can be drilled, tapped, and locked directly on the setting materials and basic materials at once and quickly. They can be quickly and automatically drilled and directly tightened and fixed, which saves construction time to the greatest extent and improves th...
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  • Self Drilling Tek Screws for Heavy Sections

    Self Drilling Tek Screws for Heavy Sections

    DD Fasteners provide a full range of high-efficiency and energy-saving drill tail screws and self-tapping screws. The drill tail has fast, stable and efficient performance. The drill tail can easily drill through 6mm ~ 9mm thick iron plates, and the #5 tail screw dedicated to H-shaped steel can ...
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  • Did you use self-drilling screw correctly ?

    Did you use self-drilling screw correctly ?

    In addition to being used in some engineering projects, drilling screws are also suitable for home decoration. Compared with other screws, self-drilling screw have the characteristics of direct drilling, tapping, locking, etc., which greatly saves construction time and improves work efficiency. ...
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  • Selection and correct use of self-drilling screw

    Selection and correct use of self-drilling screw

    Self-drilling screw  cuts off the drilled object (steel plate, aluminum plate, etc.) through the drill tail at the tail, and then directly taps the thread with the thread, and then locks it. In this seemingly simple fastening process, the most critical step is the initial drilling and cutting pr...
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