- Thu Jun 16, 2016 9:52 am
#59132
Aren't self drilling screws the ones with a short drill bit like length on their ends, as used on metal clad buildings? Are we on page two yet?
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- Thu Jun 16, 2016 12:21 pm
#59137
I can't believe we're having this discussion. Surely we all know what a self-tapper is.
- Thu Jun 16, 2016 12:38 pm
#59139
Just for fun from the same manufacturers web site
Providing effective solutions to your fastening challenges is our bread and butter at Bossard. Our innovative solutions come standard, ensuring almost certain success no matter what your challenge might be.
One of Bossard’s crowning achievements is the ecosyn®-drill self-drilling screw. These screws are designed for optimum use with aluminum and galvanized steel with a hardness of HV 125 (420 N/mm2). Manufactured from case-hardened steel, these ecosyn®-drill self-drilling screws use their drill bit point to produce their own hole in which the threads dig in for a tight bond.
The biggest advantage of using ecosyn®-drill self-drilling screws is that no drilling or thread-cutting tools are required. These screws can be fastened quickly and efficiently without the use of a plot hole, resulting in substantial savings of up to 50 percent compared to drilling and tapping a hole.
The drill point is a special form which eliminates the common problem of drifting around the surface of the component before drilling commences. There is no need to center punch the drilling point with these self-drilling screws.
Providing effective solutions to your fastening challenges is our bread and butter at Bossard. Our innovative solutions come standard, ensuring almost certain success no matter what your challenge might be.
One of Bossard’s crowning achievements is the ecosyn®-drill self-drilling screw. These screws are designed for optimum use with aluminum and galvanized steel with a hardness of HV 125 (420 N/mm2). Manufactured from case-hardened steel, these ecosyn®-drill self-drilling screws use their drill bit point to produce their own hole in which the threads dig in for a tight bond.
The biggest advantage of using ecosyn®-drill self-drilling screws is that no drilling or thread-cutting tools are required. These screws can be fastened quickly and efficiently without the use of a plot hole, resulting in substantial savings of up to 50 percent compared to drilling and tapping a hole.
The drill point is a special form which eliminates the common problem of drifting around the surface of the component before drilling commences. There is no need to center punch the drilling point with these self-drilling screws.
- Thu Jun 16, 2016 3:19 pm
#59144
The switchgear is a hard unyielding plastic, if you drive a screw with a deep wide thread such as a self-tap (or whatever you debate to call it I don't care) there is a good risk of splitting this type of plastic, which is why it is originally fitted with a normal metric. It's a bit like driving a large screw into a sheet of wood without a pilot, the wood splits. When you displace material it has to go somewhere. A wood screw or self-tap displaces material, a tap gouges out and removes material. I have done this type of job more than a few times.
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