Deceleration Stress - Additional stress imposed on a wire rope due to decreasing the velocity of the load   Diameter - Distance measured across the center of a circle circumscribing the wires of a strand or the strands of a wire rope Dog-Leg - Permanent short bend or kink in a wire rope caused by improper use Drum - A cylindrical flanged barrel of uniform or tapering diameter on which rope is wound for operation or storage. It may be smooth or grooved Efficiency (wire rope) - Percentage ratio of measured breaking strength of a wire rope to the aggregate strength of all individual wires tested separately Elastic Limit - Limit of stress above which a permanent deformation takes place within the material Endless Rope - Rope whose two ends are spliced together Equalizing Thimbles - Special type of fitting used as a component part of some wire rope slings Extra High Strength Strand - A grade of galvanized or bright strand Eye or Eye Splice - A loop with or without a thimble formed in the end of a wire rope Factor of Safety - Ratio of breaking strength of a wire rope to total rope stress Fatigue - Term commonly applied to progressive fracture of wires of a rope Fiber Centers - Cords or rope made of vegetable fiber or synthetic fiber used in the center of a strand Fiber Cores - Cords or rope made of vegetable fiber or synthetic fiber used in the core of a wire rope Filler Wire - Small auxiliary wires in a strand for spacing and positioning other wires Fitting - Any accessory used as an attachment for wire rope Flat Rope - Wire rope made of parallel alternating right lay and left lay ropes sewn together by relatively soft wire   Fleet Angle - Angle between position of a rope at the extreme end wrap on a drum, and a line drawn perpendicular to the axis of the drum through the center of the nearest fixed sheave