In nonetheless yet another aspect, the lower portion in the sub- nail is just not coupled with all the master Shooting Nails. Along with the sub- nail plus the master nail are positioned vertically inside a juxtaposed manner. When the double-shank Shooting Nails are nailed in to the metal board by way of the spacer, the master nail which includes a better hardness penetrates by the metal board, although the sub-nail which features a lower hardness is bent outwards resulting from the sloped surface in the tip along with the notch on the secondary shank that reduces the strength. Because the master nail has an inertial force through nailing, the sub- nail is simply bent and nails in to the spacer to kind a stronger fastening for the spacer and also the metal board.

The flange could be formed by a screw thread extending from the master shank surface and formed inside a diagonal V-shape cross section.

The sub- nail may perhaps possess a better hardness by a hardening procedure in order that each the master Shooting Nails and sub- nail can penetrate the metal board for the duration of nailing to boost fastening.

The foregoing, at the same time as extra objects, characteristics and strengths in the invention will probably be much more readily apparent from the following comprehensive description, which proceeds with reference for the accompanying drawings.

This is the brief description of Double-shank Shooting Nails, I hope it will help you.