The widely recognized engineering formula, T= K x D x P (to be explained later in this article), was used to provide the chart's values, but it must be understood that every bolted joint is unique and the optimum tightening torque should be determined for each application by careful experimentation. A properly tightened bolt is one that is stretched such that it acts like a very ridged spring pulling mating surfaces together. The rotation of a bolt (torque) at some point causes it to stretch (tension). Several factors affect how much tension occurs when a given amount of tightening torque is applied. The first factor is the bolt's diameter. It takes more force to tighten a 3/4-10 bolt than to tighten a 318-16 bolt because it is larger in diameter. The second factor is the bolt's grade. It takes more force to stretch an SAE Grade 8 bolt than it does to stretch an SAE Grade 5 bolt because of the greater material strength. The third factor is the coefficient of friction, frequently referred to as the "nut factor." The value of this factor indicates that harder, smoother, and/or slicker bolting surfaces, such as threads and bearing surfaces, require less rotational force (torque) to stretch (tension) a bolt than do softer, rougher, and stickier surfaces. The basic formula T = K x D x P stated earlier takes these factors into account and provides users with a starting point for establishing an initial target tightening torque.
Bolt was growing more popular in his homeland. Howard Hamilton, who was given the task of Public Defender by the government, urged the JAAA to nurture him and prevent burnout , calling Bolt "the most phenomenal sprinter ever produced by this island".  His popularity and the attractions of the capital city were beginning to be a burden to the young sprinter. Bolt was increasingly unfocused on his athletic career and preferred to eat fast food, play basketball, and party in Kingston's club scene. In the absence of a disciplined lifestyle, he became ever-more reliant on his natural ability to beat his competitors on the track.