Here how I do it with a pull down menu these line have been added to my acad menu.
Inserts blocks dwg. files of steel shapes
[->Wide Flange]
[->W4 to W8]
[W4 x 13]^c^c-insert w4-13
[W5 x 16]^c^c-insert w5-16
[W5 x 19]^c^c-insert w5-19
[--]
[W6 x 9]^c^c-insert w6-9
[W6 x 12]^c^c-insert w6-12
[W6 x 15]^c^c-insert w6-15
[W6 x 20]^c^c-insert w6-20
[W6 x 25]^c^c-insert w6-25
[--]
[W8 x 10]^c^c-insert w8-10
[W8 x 13]^c^c-insert w8-13
[W8 x 14]^c^c-insert w8-14
[W8 x 15]^c^c-insert w8-15
[W8 x 18]^c^c-insert w8-18
[W8 x 21]^c^c-insert w8-21
[W8 x 24]^c^c-insert w8-24
[W8 x 28]^c^c-insert w8-28
[W8 x 31]^c^c-insert w8-31
[W8 x 35]^c^c-insert w8-35
[W8 x 40]^c^c-insert w8-40
[W8 x 48]^c^c-insert w8-48
[<-W8 x 58]^c^c-insert w8-58
[->W10 to W12]
[W10 x 12]^c^c-insert w10-12
[W10 x 15]^c^c-insert w10-15
[W10 x 16]^c^c-insert w10-16
[W10 x 19]^c^c-insert w10-19
[W10 x 22]^c^c-insert w10-22
[W10 x 26]^c^c-insert w10-26
[W10 x 30]^c^c-insert w10-30
[W10 x 33]^c^c-insert w10-33
[W10 x 39]^c^c-insert w10-39
[W10 x 45]^c^c-insert w10-45
[W10 x 49]^c^c-insert w10-49
[W10 x 54]^c^c-insert w10-54