THE SYSTEM

ArmaCoil Insert Flexibility

Maximum design flexibility as well as compliance with conventional engineering practice give the designer unlimited opportunities to use ArmaCoil Insert Assemblies.

Five lengths of inserts for each thread size are available: Lengths of 1, 1.5, 2, 2.5 and 3 times the nominal thread diameter. This choice of insert lengths offers the designer the opportunity to balance the tensile strength of the bolt material against the shear strength of the parent material. This choice of insert lengths also aids the designer to conform to the conventional engineering practice of assuring bolt failure rather than damage to the parent material when the assembly is subjected to destructive loads. A table has been prepared to assist the designer in his choice of thread engagements for different combinations of bolt and parent materials.