The masonry screws Diaries
Unbrako Durlok® self locking, anti vibration hex head flange bolts. These are definitely serrated flanged hex head bolts, that may be paired Together with the Unbrako Durlok® self locking serrated flanged nut. They equally Have a very higher tensile power of 12.9 and also a black oxide/self coloured finish. These weighty responsibility fasteners