The Simpson 5/16 in. x 12 in. SDS-plus Shank Drill Bit is a premium-quality, professional-grade carbide-tipped bit engineered to the highest industry standards for demanding concrete and masonry drilling applications. Built on a chromium-nickel-molybdenum steel alloy body and fitted with a 2-cutter head, this rotary hammer bit is designed for contractors and tradespeople who need reliable, high-speed performance in tough base materials. Whether you are setting anchors, drilling pilot holes, or working through reinforced concrete, this bit delivers the precision, durability, and speed that professional work demands.

Key Features

• Uniformly brazed carbide inserts - creates a consistent, secure bond across the cutting tip, resisting premature wear and resulting in longer bit life between replacements
• Chromium-nickel-molybdenum steel alloy body - provides the hammering quality and toughness needed to withstand repeated rotary hammer impacts while delivering extended service life on the job
• Heat-treatment procedures and shot-peened finish - increase surface hardness and drilling speed, reduce drill bit wear, and improve resistance to bending forces so the bit stays true under load
• Chisel-shaped drill-bit head - penetrates material efficiently and directs concrete dust into the multi-flute spiral, keeping the cutting zone clear for faster, cleaner progress
• High-volume, multi-flute spiral - quickly channels concrete dust from the hole during drilling, reducing clogging and maintaining consistent drilling speed throughout the bore
• SDS-plus shank - locks securely into SDS-plus rotary hammer drills for tool-free bit changes and reliable torque transfer during heavy hammering work
• Conforms to ANSI Standard B212.15 - meets established dimensional and performance tolerances, giving buyers confidence in consistent, predictable results across every application

Why This Product

• Professional-grade construction from a trusted brand - Simpson produces this bit to the highest industry standards, incorporating proprietary features that enhance durability and drilling speed, making it a dependable choice for serious concrete and masonry work
• Engineered for speed without sacrificing longevity - the combination of uniformly brazed carbide inserts, heat-treatment, and a shot-peened finish works together to maintain a sharp, hard cutting edge longer, reducing downtime from bit changes on the jobsite
• Efficient dust evacuation keeps you drilling faster - the chisel-shaped head and high-volume, multi-flute spiral work in tandem to continuously clear concrete dust from the hole, preventing clogging and sustaining drilling speed from start to finish
• Built to handle the stresses of rotary hammer drilling - the chromium-nickel-molybdenum steel alloy body and resistance to bending forces mean this bit holds up under the repeated impact loads of SDS-plus hammer drills, even in tough aggregate or reinforced concrete

Specifications

• Model Number (MPN): MDPL03112
• Brand: Simpson Strong-Tie
• Shank Type: SDS-plus Shank
• Head Type: 2-Cutter Head
• Diameter: 5/16 in.
• Overall Length: 12 in.
• Drilling Depth: 10 in.
• Material: Hardened Steel
• Standard Compliance: ANSI Standard B212.15
• Country of Origin: Germany

Frequently Asked Questions

What type of shank does the MDPL03112 drill bit use?

The MDPL03112 features an SDS-plus shank, which allows for secure, tool-free bit changes and is compatible with SDS-plus rotary hammer drills.

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

This drill bit has a drilling depth of 10 in. and an overall length of 12 in., providing ample reach for deeper anchor and fastener installations in concrete and masonry.

What makes the carbide tip on this bit last longer than standard bits?

The carbide inserts are uniformly brazed onto the bit, ensuring a consistent and secure bond that resists premature wear. Combined with the heat-treatment procedures and shot-peened finish, the bit achieves increased surface hardness and improved resistance to bending forces, all of which contribute to extended service life.

How does the bit manage concrete dust during drilling?

The chisel-shaped drill-bit head is designed to penetrate material while directing concrete dust into the high-volume, multi-flute spiral. The spiral then quickly channels that dust out of the hole, improving drilling speed and reducing clogging during operation.

Note: Product dimensions may differ from picture. Please refer to the specifications listed above for accurate measurements.