There will come a time when you will encounter a seemingly impossible task, a piece of steel so thick and heavy duty that even your already awesome XIAOJUN No.3 point screws in the toolkit cannot handle. There will come a time when you the piece of steel in front of you may be tagged as “mild steel”, but in fact is composed of complex, unevenly distributed alloys, which creates a big challenge for regular self-drilling tips, and almost impenetrable.
One of the most important job a self-drilling screw has to muster, is clearing out excess material, or swarf, while drilling. Having a hardened drilling point and sharp cutting blades only helps with the initial drill and drive, but without a flute long enough and designed correctly to bring out the excess during the spiraling action, iron shavings left in the hole are heated easily from all the spinning, causing the drill to burn out. Once this happens, there is little to no chance of penetration with the screw, and you’ll have to start all over again.
A lot of big brand names are marketing their screws as either self- as screws for thick steel, heavy duty self-drilling metal screws, or self-drilling screws for thick steel, capable of drilling through 12.5mm steel and above, though not many can perform as advertised.
Not for other Heavy Section Fasteners. Ours perform flawlessly, without fail.
XIAOJUN heavy section, penetrates 12.5mm thick steel with ease. The whole screw is coated with BN3 silver coating, which consists of multiple layers of specially formulated, corrosion resistant chemicals, and can easily withstand 1000hrs of salt spray test (ASTM B117), and 7 Kesternich cycles (DIN50018 2.0 SFW).
Please contact your nearest XIAOJUN Fasteners dealer for further information.
