Hardwood Wood from broad-leaved species of trees (not necessarily hard or dense) Helical Nail Helically (continuous spiral) threaded pallet nail Inner Deck Board Any deck board... of wood species Single-Wing Pallet A pallet with the top deck boards extending beyond the edges of the stringers or stringer-boards with the bottom deck boards flush (if present... systems Soft Nail Pallet nail with a MIBANT angle equal to or greater than 47 degrees Softwood Wood from coniferous or needle-bearing trees (not necessarily soft or low density) Solid...