A mechanical connection of a first tube to a second tube, in which the first tube has a radially inner dimension and the second tube has a radially outer dimension permitting close sliding engagement of an end of the second tube within an end of the first tube. The connection includes staked segments spaced apart circumferentially about the first and second tube side walls. Each staked segment includes simultaneously formed projections formed by a staking or piercing knife in the side walls of both tubes.