The Simpson MDPL06212Q 5/8 in. x 12 in. SDS-plus Quad-Head Shank Drill Bit is a premium, professional-grade carbide-tipped drill bit engineered by Simpson Strong-Tie to handle demanding drilling applications in reinforced concrete and masonry. Built to the highest industry standards, this bit features a proprietary 4 x 90 deg. Quad Head geometry that crushes through rebar and resists sticking, making it an exceptional choice for contractors and tradespeople who require speed, durability, and precision on the job site.

Key Features

• Uniformly brazed carbide inserts result in longer bit life
• Most bits contain a centering tip that facilitates easy spot drilling
• Chromium-nickel-molybdenum steel alloy body ensures hammering quality and extended service life
• Heat-treatment procedures and shot-peened finish increase surface hardness, drilling speed, reduces drill bit wear and improves resistance to bending forces
• Drill bits conform to ANSI Standard B212.15
• High-volume, multi-flute spiral quickly channels concrete dust from the hole to improve drilling speed
• 4 x 90 deg. head geometry crushes through rebar and prevents sticking in reinforced concrete
• SDS-plus shank provides secure tool-free bit changes and positive engagement with rotary hammer chucks

Specifications

• Model Number (MPN): MDPL06212Q
• Brand: Simpson Strong-Tie
• Shank Type: SDS-plus Shank
• Head Type: Quad Head 4x Drill Bit
• Diameter: 5/8 in.
• Overall Length: 12 in.
• Drilling Depth: 10 in.
• Material: Hardened Steel (Chromium-Nickel-Molybdenum Steel Alloy Body with Carbide Tip)
• Standard Compliance: ANSI Standard B212.15
• Country of Origin: Germany (DE)

Frequently Asked Questions

What type of shank does the MDPL06212Q use, and which rotary hammers is it compatible with?

The MDPL06212Q features an SDS-plus shank, which provides a tool-free, positive-locking connection with SDS-plus rotary hammers. This shank type is a widely adopted industry standard compatible with SDS-plus rotohammers from many major tool brands.

What makes the Quad Head geometry on this drill bit beneficial for concrete drilling?

The 4 x 90 deg. Quad Head geometry is specifically engineered to crush through rebar and prevent the bit from sticking when drilling in reinforced concrete. This design improves drilling efficiency and helps protect the bit and the tool during demanding applications.

How does the bit's construction contribute to its durability and service life?

The bit body is constructed from a chromium-nickel-molybdenum steel alloy, which ensures hammering quality and extended service life. Additionally, heat-treatment procedures and a shot-peened finish increase surface hardness, improve resistance to bending forces, and reduce drill bit wear. Uniformly brazed carbide inserts further contribute to longer bit life.

How does the flute design affect drilling performance in concrete?

The high-volume, multi-flute spiral design quickly channels concrete dust out of the hole during drilling. By efficiently evacuating debris, the flutes help maintain drilling speed and reduce heat buildup, improving overall performance and extending the life of the bit.

Note: Product dimensions may differ from picture. Please see the item description above for specifications.