What should be the minimum penetration for the shank of an explosive-actuated tool fastener?

The minimum penetration for the shank of an explosive-actuated tool fastener is determined by safety and performance standards. A penetration of 8 times the diameter of the fastener shank provides an effective bond, ensuring that the fastener securely embeds into the material being fastened. This depth is crucial for achieving the necessary shear strength and overall holding power needed for structural integrity.

Utilizing a penetration greater than this, while it might seem advantageous, can lead to waste of material and unnecessary complications in the fastening process. Therefore, the standard of 8 times strikes a balance between effective fastening and practical application. Understanding this requirement is vital for ensuring that the fastening will be reliable without compromising the integrity of the materials involved.