1.1 This specification covers functional dimensions for fixation pins and wires. 1.2 In recognition of many broad and varied uses of such pins and wires, many options are included. A variety, but not necessarily all, of This specification covers the material requirements and functional dimensions for fixation pins and wires. Factors such as bending strength, fatigue strength, break strength (Knowles type only), torsion strength, and ductility are considered important