The majority
of the fasteners stocked in the James Glen product range are of the
threaded type, which are essentially standard in nature and are
tightened or assembled by rotational action.
Many of these products have common features such as driving
methods, threads, heads, points, materials, finishes etc. While
others may have additional unique features such as nylon inserts,
serrations, tamper resistance, welding lugs or may be an adjunct to
the primary fastener such as nuts, washers and cotter pins.
In this manual, we attempt to identify each of these features,
the common and optional terminology for it, its use or purpose and
the products likely to incorporate it, so that users of this manual
improve their ability to quickly identify and describe a specific
product.
We also attempt to provide a basic understanding of the mechanics
of threaded fasteners, their materials and strength grades, how they
work, how and where to measure them and which finishes are
available, so that manual users are better equipped to provide
superior customer service.
