Starting with the last moving forward, The tie down strap-a-thing is the residual runoff of the retaining strap that holds down the Kevlar trans shield. The first trans shields CSR or CRS or Rcs or what ever they are called were not well planned with their strap buckles and overhang material. I hate having that stuff hang in the wind. Always get stopped by tech.

Heims are part of the forward/backward restraining system since the motor sits with a motor plate upfront. The heims allow for limited movement in most directions during launch to lesson stress but keep things in place. They are 7075 aluminum to keep weight to a minimum.
CM can be welded to steel, just by the right welder using the right welding rods,heat range and oxygen cleansing.