Selling Bolts Low Price. PT. Boelan Oetama Mandiri, is a supplier that sells cheap bolts of the most complete products of various types, sizes and functions for the needs of your industry. Bolt which is a connecting tool by using iron rods are round and threaded, one of its sides forms the head and the ends are mounted with nuts as the lock. The head functions for opening and closing operations and connecting with nuts. This product is usually used as a binder to hold two objects together and connect machine elements.