XBolt Countersunk Head Concrete Screw, Zinc Yellow Passivate: Sizes, Loads and Installation

Key things to remember

The essentials from this document in plain words. Check the full document before you rely on a figure.

• ✓A one-piece screw anchor for solid concrete. It taps its own thread as it is screwed into a drilled hole, can be loaded straight away and is fully removable. The countersunk head sits flush.
• ✓Sizes M6 to M12, 50mm to 150mm long: M6 x 50 and 75, M8 x 50 to 100, M10 x 60 to 100, M12 x 75 to 150. Internal hex drive of 5mm (M6), 6mm (M8), 8mm (M10) and 10mm (M12). Packs of 50, or 100 for M6 x 50.
• ✓Hole diameter equals the anchor size (6mm to 12mm). Minimum embedment: M6 25mm, M8 40mm, M10 50mm, M12 55mm. Minimum spacing and edge distance: 40mm for M6 and M8, 50mm for M10, 60mm for M12.
• ✓Working load in tension in 32MPa non-cracked concrete, with safety factors of 3.0 on concrete and 2.5 on steel already included: from 1.3kN (M6 at 25mm embedment) to 19.0kN (M12 at 110mm). For example M10 at 75mm embedment 10.1kN.
• ✓Working load in shear, same conditions, rises with edge distance. M10 at 60mm embedment: 2.7kN at 50mm from the edge, 8.8kN at 120mm. M12 at 70mm embedment: 3.6kN at 60mm, 12.6kN at 150mm.
• ✓Maximum installation torque in 32MPa concrete: M6 15Nm, M8 45Nm, M10 55Nm, M12 80Nm.
• ✓Listed uses: hand rails, formwork support, mechanical, electrical and pipe brackets, and general flooring.

Who it helps: Builders and installers fixing hand rails, brackets or flooring flush to concrete, and engineers checking design resistances.