... BSW"threads for Machine threads.Head typesHexagon head,Mushroom head,Pan head,Countersunk head,Bugle head,Oval head,Hex flange head,Round head,Ball head,Button head...Socket typesPhillip type,Pozi ... 4)There are 48 cartons form a pallet ,its CBM: 0.85M3-1 M3,its G.W.:1.13T-1.27T 5)20 pallets ... 18%-0.23% ,is higher hardness than other.2.Fasteners' Head is much thicker ,it is strong not break down . ...