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Powder-actuated tools are often used because of their speed of operation, compared to other processes such as drilling and then installing a threaded fastener. They can more easily be used in narrow or awkward locations, such as installing steel suspension clips into an overhead concrete ceiling.
In 1952 Hilti launched its first construction-related product, a manual tool to drive threaded studs into steel. In 1953 the company introduced its first powder-actuated high-velocity fastener that allowed setting nails into concrete, called Perfix. [10]
Siddons was sent to the United States on a research tour in 1949, where he was introduced to the newly created Ramset gun – "a powder-actuated tool gun that greatly sped up the process of fastening slabs of concrete or steel". [2]
A screw is inserted into the base material via a gas actuated gas gun. The driving energy is usually provided by firing a combustible propellant in powder form. [14] The fastener's insertion provokes the plastic deformation of the base material which accommodates the fastener's head where the force transfer takes place.
Pneumatic nail gun in use. A nail gun, nailgun or nailer is a form of hammer used to drive nails into wood or other materials. It is usually driven by compressed air (), electromagnetism, highly flammable gases such as butane or propane, or, for powder-actuated tools, a small explosive charge.
Fasteners commonly used with piping are a stud bolt [25] with nuts (usually fully threaded, with two heavy, hexagonal nuts); a machine bolt and nut; or a powder-actuated tool (PAT) fastener (usually a nail or threaded stud, driven into concrete or masonry).
A few tools (called powder-actuated tools) are powered by explosive cartridges. Tools that run on gasoline or gasoline-oil mixes are made for outdoor use; typical examples include most chainsaws and string trimmers. Other tools like blowtorches will burn their fuel externally to generate heat. Compressed air is universally used where there is a ...
The screw itself should be drilled a minimum of 1" into the concrete to hold effectively and a maximum of 1-3/4" or the threads will wear and will lose holding power. Ideally 1-1/4" to 1-1/2" of screw thread in the concrete. [1] So for example, if a 1/2" board is being screwed onto the concrete, a 1-3/4" to 2" concrete screw should be used ...
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