Coated bolting
Coated bolting is a category in which the fastener surface receives a specified coating for an objective such as corrosion or friction control. The title does not identify the coating and does not imply PTFE, zinc, cadmium or another system. Coating type, thickness, surface preparation, friction basis, nut compatibility and temperature limits must be specified for the actual assembly.
Application and duty
Bolted joints using an explicitly specified and controlled coating system for project conditions