a form of secondary suspension formed of a length of steel wire terminated with one springhook at one end and a loop at the other end.
Steel cable attached to the monkey board and anchored to the ground at some distance from the rig. It is used by the derrickhand to slide clear of danger in an emergency.
A strong wire, usually stainless steel, used to hold pre-drilled nuts or bolts in place, preventing them from turning.
Wire that passes through holes drilled into a nut and bolt in order to prevent the nut and bolt from loosening due to vibration.
Safety wire is common in the aircraft and racing industries as an extra precaution to keep vital fasteners from loosening and parts falling off. Safety wire is commonly .020, .025, .032 or .041 inches in diameter and usually made of stainless steel, but is also available in Monel and Inconel alloys for high temperature applications and copper for break-away applications. It 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.