... 1> Description: High strength bolt, tension control bolt, T. C Bolt 2> Material: Alloy Steel 3> Surface ... A325 Tension Control Bolt (T. C Bolt) A449 Tension Control Bolt( T. C Bolt) A490 Tension Control Bolt(T. C Bolt) For ... 4 M16*53 5/8-2.1/8 M18*56 7/10-2.13/64 M19* ... , Galvanized, Black, Nickel, Chrome, H.D.GPackingCarton, Box, Bag, PalletQuality AssuranceISO 9001Our bolts and assembly products are ...