The Simpson 9/16 in. x 12-1/4 in. SDS-plus Shank Drill Bit is a premium, professional-grade carbide-tipped bit engineered by Simpson to handle demanding concrete and masonry drilling with consistent precision and extended service life. Built on a chromium-nickel-molybdenum steel alloy body and featuring a 2-Cutter Head with SDS-plus shank compatibility, this rotohammer bit is purpose-built for contractors and tradespeople who require reliable performance across high-volume drilling applications.

Key Features

• Uniformly brazed carbide inserts - consistent bonding across the cutting tip means the bit holds up longer under repeated use, reducing replacement frequency on the job.
• Centering tip design - facilitates easy spot drilling so the bit stays on target from the first contact, saving time and improving hole placement accuracy.
• Chromium-nickel-molybdenum steel alloy body - engineered specifically for hammering applications, this alloy resists fatigue and delivers an extended service life even under heavy rotohammer use.
• Heat-treatment procedures and shot-peened finish - increase surface hardness and drilling speed, reduce bit wear, and improve resistance to bending forces so the bit performs reliably in tough material.
• Chisel-shaped 2-Cutter Head tip - penetrates material efficiently and actively directs concrete dust into the spiral flutes, keeping the cutting edge clear and maintaining drilling speed.
• High-volume, multi-flute spiral - quickly channels concrete dust out of the hole to prevent clogging, improve drilling speed, and reduce heat buildup at the tip.
• ANSI Standard B212.15 conformance - ensures the bit meets established industry tolerances for carbide-tipped masonry and concrete drill bits, giving buyers confidence in dimensional consistency and quality.
• SDS-plus shank - provides a secure, tool-free connection with SDS-plus rotohammer drills, enabling efficient energy transfer from the hammer mechanism directly to the cutting tip.

Why This Product

• Professional-grade construction built to last - the combination of a hardened steel alloy body, uniformly brazed carbide inserts, heat treatment, and a shot-peened finish means this bit is engineered for the rigors of repetitive concrete and masonry drilling, not just occasional use.
• Faster drilling with less effort - the chisel-shaped 2-Cutter Head and high-volume multi-flute spiral work together to break material efficiently and evacuate dust continuously, so the bit stays sharp and drilling speed stays high throughout the job.
• Precision you can count on from the first hole - the centering tip and ANSI B212.15 compliance mean the bit starts true, holds its diameter accurately, and delivers repeatable results whether you are setting anchors, running conduit, or drilling for fasteners in concrete.
• Engineered to Simpson Strong-Tie standards - this bit is manufactured to the highest industry standards for Simpson, making it a natural companion to Simpson anchoring and fastening systems where hole diameter and depth tolerances directly affect load performance.

Specifications

• Model Number (MPN): MDPL05612
• Brand: Simpson Strong-Tie
• Diameter: 9/16 in.
• Overall Length: 12-1/4 in.
• Drilling Depth: 10 in.
• Shank Type: SDS-plus Shank
• Head Type: 2-Cutter Head
• Material: Hardened Steel
• Country of Origin: Germany
• Standards Compliance: ANSI Standard B212.15

Frequently Asked Questions

What type of shank does the MDPL05612 drill bit use?

The Simpson MDPL05612 features an SDS-plus shank, which is compatible with SDS-plus rotohammer drills designed to accept this shank style.

What is the drilling depth and overall length of this bit?

The MDPL05612 has a maximum drilling depth of 10 in. and an overall length of 12-1/4 in., with a diameter of 9/16 in.

What makes the carbide tip on this drill bit durable?

The carbide inserts are uniformly brazed onto the bit, which promotes consistent bonding and results in longer bit life. The chisel-shaped, 2-Cutter Head tip efficiently penetrates material and channels concrete dust into the high-volume, multi-flute spiral to maintain drilling speed and reduce wear.

What standards does this Simpson drill bit conform to?

The MDPL05612 conforms to ANSI Standard B212.15, ensuring it meets established industry tolerances and quality requirements for carbide-tipped masonry and concrete drill bits.

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