Pieces Plastic Protective Caps for Nuts and Hex Caps for

Assorted bolts: stainless steel, giving them one of the highest levels of corrosion resistance, machine screws
Carriage bolts: carriage bolts have a domed head and a square shoulder, requiring only a washer nut, stainless steel carriage bolts
Carriage bolt: our carriage head bolts are very strong and excellent for both indoor and outdoor use, steel carriage bolts
Carriage bolt screws: these are distinguished from other bolts by their mushroom-shaped head and because the cross-section of the bolt shank is circular for the greater part of its length, as is usual, but the section immediately below the head is square, stainless steel bolt
Carriage bolts with carriage collar: this allows the fastener to be installed with a single tool, a wrench or open-end wrench, working from the side, carriage bolts