The Simpson SDS-Plus Drill Bit 7/16 in. x 6-1/4 in. 2-Cutter Carbide Tip is a premium, professional-grade rotary hammer bit from Simpson Strong-Tie, engineered to the highest industry standards for demanding concrete and masonry drilling applications. Built from a chromium-nickel-molybdenum steel alloy body and fitted with a uniformly brazed carbide-tipped 2-cutter head, this SDS-plus shank bit delivers precise hole placement, fast material removal, and long-lasting performance across a wide range of heavy-duty drilling tasks.

Key Features

• Uniformly brazed carbide inserts - consistent bonding across the entire cutting edge means the bit holds up longer under repeated use, reducing replacement frequency on the job.
• Centering tip design - facilitates easy spot drilling so you can place holes accurately without the bit wandering at the start of a cut.
• Chromium-nickel-molybdenum steel alloy body - delivers the hammering toughness and structural integrity needed to withstand punishing rotary hammer applications and extend overall service life.
• Heat-treatment procedures and shot-peened finish - increase surface hardness and drilling speed, reduce bit wear, and improve resistance to bending forces during heavy-duty use.
• ANSI Standard B212.15 conformance - ensures the bit meets precise industry tolerance requirements, giving professionals confidence in dimensional accuracy and reliable hole quality.
• Chisel-shaped 2-cutter head - penetrates concrete and masonry efficiently and directs concrete dust directly into the flute spiral, keeping the cutting zone clear for faster progress.
• High-volume, multi-flute spiral - rapidly channels concrete dust out of the hole during drilling, improving drilling speed and reducing the need to repeatedly withdraw the bit to clear debris.

Why This Product

• Purpose-built for professional rotary hammer use - the SDS-plus shank design locks securely into SDS-plus rotary hammer drills, providing the positive engagement and energy transfer that fast, efficient concrete and masonry drilling demands.
• Engineering quality you can verify - conformance to ANSI Standard B212.15, a chromium-nickel-molybdenum alloy body, and uniform carbide brazing are documented, measurable standards rather than marketing claims, so contractors know exactly what they are putting to work.
• Faster drilling with less effort - the combination of a chisel-shaped cutting head and a high-volume multi-flute spiral actively removes debris from the hole as you drill, sustaining cutting speed and reducing the physical effort needed to complete each hole.
• Built to last through demanding project loads - the heat-treated, shot-peened finish working alongside the alloy steel body delivers a bit that resists wear, bending, and fatigue over extended use, making it a cost-effective choice for high-volume drilling work.

Specifications

• MPN: MDPL04306
• Brand: Simpson Strong-Tie
• Shank Type: SDS-plus Shank
• Head Type: 2-Cutter Head
• Diameter: 7/16 in.
• Overall Length: 6-1/4 in.
• Drilling Depth: 4 in.
• Material: Hardened Steel
• Country of Origin: Germany
• ANSI Standard: B212.15

Frequently Asked Questions

What type of shank does the Simpson MDPL04306 drill bit use?

The MDPL04306 features an SDS-plus shank, making it compatible with SDS-plus rotary hammer drills for efficient concrete and masonry drilling.

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

This drill bit has a maximum drilling depth of 4 in. and an overall length of 6-1/4 in., with a diameter of 7/16 in.

What makes the carbide inserts on this bit more durable?

The carbide inserts are uniformly brazed onto the bit, which ensures consistent bonding across the cutting edge and results in longer bit life compared to less precisely manufactured alternatives.

How does the body construction of this drill bit contribute to its performance?

The body is made from a chromium-nickel-molybdenum steel alloy, which is then subjected to heat-treatment procedures and a shot-peened finish. This process increases surface hardness, improves drilling speed, reduces wear, and enhances resistance to bending forces during heavy-duty hammering applications.

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