A RANGE OF HIGH TENSILE FASTENERS IS DESIGNED AND DEVELOPED BY NUTS SCREWS MANUFACTURING CO. THIS CONSISTS HIGH TENSIL BOLTS, NUTS, SCREWS, MACHINE WASHERS, CASTLE NUTS, SLOTTED NUTS, AND NYLOCK NUTS. HIGH TENSILE HEX BOLTS [FRICTION BLOTS, NIB BOLTS] ARE AVAILABLE IN 8.8 AND 12.9 GRADE AS PER ISI STANDARD. THESE PRODUCTS ARE CERTIFIED BY ALL PUBLIC SECTOR COMPANIES LIKE NTPC, BHEL AND ELECTRICITY BOARDS.