1 2 Bolt Shear Strength

shear strength
Shear strength in reference to soil is a term used to describe the maximum strength of soil at which point significant plastic deformation or yielding occurs due to an applied shear stress.
Resistance of material (i.e., epoxy) to being broken or torn apart.
The internal or cohesive strength of the adhesive.

bolt
thunderbolt: a discharge of lightning accompanied by thunder
A roll of fabric, originally as a measure
move or jump suddenly; "She bolted from her seat"
rigidly: in a rigid manner; "the body was rigidly erect"; "he sat bolt upright"

1 2
A 1-2 (pronounced "one, two") is a difficult gymnastics floor move. The name is derived from the fact that the move consists of a single twist followed by a double twist on both the horizontal and vertical axes.