Where the shape comes from
A bow seen from the side, the stave doubled back on itself; the oldest forms still show the string stretched between the tips. It marks archery and everything drawn taut: 张 is a bow being pulled open, and the same radical carries 引, 强 and 弯.
汉字 filed under 弓
No published character on HSK Guide is filed under this radical yet. 汉字库.