Key Features

• Uniformly Brazed Carbide Inserts - Precision brazing delivers consistent carbide bonding for longer bit life and reliable performance across extended use.
• Self-Centering Tips - Ensures accurate hole placement from the first strike, reducing misalignment and rework.
• Chromium-Nickel-Molybdenum Steel Alloy Body - High-performance alloy construction ensures superior hammering quality and extended service life under heavy impact loads.
• Heat-Treatment & Shot-Peened Finish - Advanced heat-treatment procedures combined with a shot-peened finish increase surface hardness, improve drilling speed, reduce drill bit wear, and enhance resistance to bending forces.
• ANSI Standard B212.15 Compliant - Drill bit conforms to ANSI Standard B212.15 for consistent dimensional accuracy and industry-standard performance.
• High-Volume Multi-Flute Spiral - Rapidly channels concrete dust out of the hole to maintain clear drilling paths and improve drilling speed.
• 4 x 90 deg. Quad-Head Geometry - The four-cutter, 90-degree head geometry crushes through rebar and actively prevents the bit from sticking in reinforced concrete.
• Proprietary Flute Geometry - Reduces vibration, optimizes impact energy transfer, and enhances overall drilling efficiency and operator comfort.
• Patented Reinforced Core Flute - High-volume, double-helix design with a reinforced core to maximize energy transfer and structural integrity under repeated impact.
• SDS-Max Shank - Compatible with all SDS-max rotary hammers for secure, tool-free bit changes and optimal power transmission.

Specifications

• Manufacturer Part Number (MPN): MDMX08736Q
• Brand: Simpson Strong-Tie
• Shank Type: SDS-max Shank
• Head Type: Quad Head - 4x Drill Bit
• Diameter: 7/8 in.
• Overall Length: 36 in.
• Drilling Depth: 31 in.
• Material: Hardened Steel (Chromium-Nickel-Molybdenum Alloy Body with Carbide Tip)
• Standard Compliance: ANSI Standard B212.15
• Country of Origin: Germany (DE)

Approved Applications

• Drilling into concrete, including heavily reinforced concrete with rebar
• Deep-hole drilling applications requiring up to 31 in. of drilling depth
• Demanding demolition and drilling tasks requiring premium SDS-max tooling
• Applications requiring accurate hole placement with self-centering tip technology
• High-speed concrete drilling where dust clearance and vibration reduction are critical

What's Included

• 1 x Simpson Strong-Tie MDMX08736Q 7/8 in.

Frequently Asked Questions

What type of rotary hammer is this drill bit compatible with?

This drill bit features an SDS-max shank, making it compatible with all SDS-max rotary hammers. The SDS-max shank interface is designed to optimize impact energy transfer from the rotary hammer into the drill bit tip, enhancing drilling speed and durability.

What is the maximum drilling depth this bit can achieve?

This bit has an overall length of 36 inches and a maximum drilling depth of 31 inches. The diameter is 7/8 inch, making it well-suited for deep anchor holes in concrete and masonry applications.

Can this drill bit be used in reinforced concrete containing rebar?

Yes. The quad-head design features a 4 x 90 deg. head geometry that is specifically engineered to crush through rebar and prevent the bit from sticking in reinforced concrete. The chromium-nickel-molybdenum steel alloy body and uniformly brazed carbide inserts further support reliable performance under these demanding conditions.

What standards does this drill bit conform to, and what materials is it made from?

This drill bit conforms to ANSI Standard B212.15 for consistent dimensional accuracy and industry-standard performance. The body is constructed from a chromium-nickel-molybdenum steel alloy and undergoes heat-treatment procedures with a shot-peened finish to increase surface hardness, improve drilling speed, reduce wear, and enhance resistance to bending forces.