Timco Exterior Multi-Fix Hex Head Bolts - 8.0 x 130 (50 pack) Timco multi-fix masonry bolts are built to replace traditional anchoring solutions. This stress free, non-expansion through fixing is the new solution for heavy duty anchoring into concrete, brick, stone, wood and concrete block replacing the need for traditional anchors such as throughbolts, shield, sleeve and drop-in anchors.