It can be equipment such as fasteners , keys , locks , hinges , latches , handles , wire , chains , plumbing supplies , tools , utensils , cutlery , screws and machine parts , especially when they are made of metal . Modern hardware stores typically sell equipment such as keys , locks , hinges , latches , corners , handles , wire , chains , plumbing supplies , tools , utensils , cutlery and machine parts , especially when they are made of metal .