high quality hex head self drilling screws with epdm bonded washer

size: M4.8*L19-125mm M5.5*L19-135mm M6.3*L19-125mm

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Product Description

A self-drilling screw has a drill bit point that eliminates separate drilling and tapping operations for faster, more economical installations. The drill point allows these drill screws to be installed into steel base materials up to 1/2" thick. Self-drilling screws are available in a variety of head styles, thread lengths, and drill flute lengths for screw diameters #6 thru 5/16"-18.

Product Advantages

The Gongbing self drilling screws adopts German technology, has reasonable design, strong anchoring force and is easy to use:

The raw materials used are all from large domestic steel companies and can meet the stringent requirements of high-strength bolts: the world's most advanced surface treatment.

The dovetail design can effectively improve the attack speed of the product during construction and has strong penetration.

The advanced surface treatment technology of Gongbing drill tail wire makes the anti-corrosion and weather resistance of drill tail wire several times that of ordinary products.

Hexagonal drill tail wire is mainly used for fixing color steel tiles of steel structures, and is also used for fixing simple building thin plates, and connecting metal to metal such as light steel keels, wooden keels, and aluminum profiles.

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