Advanced Secondaries Inc. has machines and tooling to
drill most types of fasteners. We work from prints,
sketches, or samples. Just tell us what you need and we'll
do the rest.
Drilling a screw all the way through lengthwise makes it a
vented screw. Its purpose is to maintain atmospheric
pressure constant within a device while keeping contaminants
out. Venting is applied to plugs as well as screws.
Drilling includes heads, shanks, corners, blind, cross
drilled, shank drilled and vented.
Safety wire or lockwire is common in the
aircraft and racing industries as an extra precaution
to keep vital fasteners from unintentionally loosening
and part for falling off due to vibration or other forces. This
function is often referred to as "positive locking".
It also allows rapid and easy visual inspection of fasteners to
ensure that they have been tightened.
Safety Wiring of fasteners is often a requirement to pass
technical safety inspections in racing. Safety wire itself
is available in multiple gauges and different materials,
depending on the application. In consumer aircraft and
racing applications, stainless steel wire is used, most commonly
in .032" diameter, although other gauges are used for specific
circumstances. Typically, safety wire is threaded through
a hole drilled into a fastener or part, then twisted and
anchored to a second fastener or part, then twisted again,
usually with the aid of safety wire pliers.