Drill bit for concrete STANLEY STA58508 triangular shank 8 mm

Drill bit for concrete STANLEY STA58508 triangular shank 8 mm is a straight-geometry masonry bit intended for drilling precise 8 mm holes in concrete and other masonry materials. The 8 mm diameter provides a consistent bore size for anchors, dowels and fasteners. The triangular shank is compatible with drills and rotary hammers that accept this shank type, ensuring secure fitting and efficient torque transfer during rotary or hammer drilling operations.

Advantages

The STA58508 concrete drill bit combines a durable carbide tip and optimized flute design to remove dust and debris effectively while maintaining hole accuracy. Its triangular shank offers reduced slippage in compatible chucks and adapters, improving stability under load. The straight-bit geometry supports controlled drilling depth and alignment for repeatable, clean holes in solid substrates.

Suitable for

• Drilling 8 mm holes in concrete, brick and stone for anchors and dowels
• Installation of fasteners for light to medium construction and renovation tasks
• Use with hammer drills and rotary hammers accepting triangular shanks

Key specifications

• Diameter: 8 mm
• Shank type: triangular shank for secure engagement
• Tip material: carbide tip suited for masonry
• Geometry: straight flute design for efficient dust removal
• Intended materials: concrete, brick, stone and general masonry

How to use

Select a drill or rotary hammer that accepts triangular shanks and secure the bit in the chuck or adaptor according to the tool manufacturer’s instructions. Mark the drilling point, start at low speed to create a guide, then increase speed and apply steady pressure appropriate for hammer or rotary drilling. Periodically withdraw the bit to clear debris and reduce heat build-up. For through-holes or deep holes, clear dust frequently to maintain drilling efficiency and hole accuracy.

Usage recommendations

Use personal protective equipment such as safety glasses and dust mask when drilling masonry. Match drill speed and hammer settings to the substrate hardness and avoid excessive side pressure to prolong bit life. For best results when installing anchors, use the specified hole depth and clean the hole of dust before inserting fasteners.