Can someone tell me what this piece is? The entire piece is 6L long and the axle portion is 4L. It has 2 pin holes perpendicular to the axle on the ends. Dark Bluish Gray.

&copy; Lego printed on the side, but no part number or date. The number 5 is also printed.
This is a TRACK ROD 6M,etc., which is mainly used as a steering arm in Technic cars like in this 8048-1: Buggy.