THE MASONRY SCREWS DIARIES

The masonry screws Diaries

Unbrako Durlok® self locking, anti vibration hex head flange bolts. These are generally serrated flanged hex head bolts, which may be paired with the Unbrako Durlok® self locking serrated flanged nut. They equally Possess a higher tensile toughness of 12.9 plus a black oxide/self coloured end. These hefty duty fasteners are suitable for situation

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