Definition(s)
Cold Formed Bolts, Screws, and Nuts
Parts formed through the mechanical cold (at a temperature below the recrystallization temperature) up-setting of wire, rod, or bar in order to generate the bolt or screw head (cold heading) or the configuration of the nut.
Source: API Specification 20E, Alloy and Carbon Steel Bolting for Use in the Petroleum and Natural Gas Industries, Second Edition, February 2017. Global Standards