Pioneer Nuts & Bolts Pvt. Ltd manufactures Slotted and Castle Nuts. Pioneer Nuts & Bolts Pvt. Ltd is an ISO 9001: 2000 certified company. The Company also offers various types of nuts, bolts, washers, threaded bars, screws, rivets etc. The Slotted and Castle Nuts find an application in machineries used in refineries, auto mobile sector, power sector, paper industries, cement industries, railways, defense and steel and ship yard. The Slotted and Castle Nuts have size ranging from M6 to 64mm. These Nuts are available in phosphate, galvanized [electro] yellow and self, galvanized hot dip, cadmium plating, Teflon and powder finishes.