The Simpson SDS-Plus Fixed-Depth Drill Bit for 3/8 in. Drop-In Anchors is a purpose-built hole preparation tool designed to work hand in hand with Simpson Drop-In anchors (DIA, DIAB) in concrete anchoring applications. Its fixed-depth stop eliminates guesswork from the drilling process, delivering a consistently sized and properly seated hole every time - so installers can move confidently from drilling to anchor setting without stopping to measure or adjust.

Key Features

• Fixed-depth design - automatically stops at the correct drilling depth for 3/8 in. Drop-In anchors, eliminating over-drilling and ensuring every hole meets installation requirements
• SDS-Plus shank - locks securely into SDS-Plus rotary hammers for efficient power transfer and allows fast, tool-free bit changes that keep work moving on the job site
• 1/2 in. diameter - produces the exact hole size needed for proper seating and load performance of compatible Drop-In anchors
• Verified concrete compatibility - approved for use in normal-weight concrete, sand-lightweight concrete, and hollow-core concrete, covering the most common structural substrates

Why This Product

• Engineered specifically for Simpson Drop-In anchors - designed as a matched system component for the DIA and DIAB anchors, this bit removes compatibility uncertainty and supports correct, reliable anchor installation from the first hole
• Consistent results across the entire job - the fixed-depth stop means every hole on a project is drilled to the same precise depth, reducing variability and the risk of improperly set anchors
• Broad substrate coverage - approval across normal-weight, sand-lightweight, and hollow-core concrete means one bit handles a wide range of concrete anchoring situations without substitution
• German-engineered quality - produced to the exacting standards reflected in its country of origin, this drill bit is built to perform consistently under the demands of repetitive rotary hammer use

Specifications

• Model Number: MDPL050DIA
• Shank Type: SDS-Plus
• Diameter: 1/2 in.
• Drilling Depth: 1-11/16 in.
• For Anchor Diameter: 3/8 in.
• Compatible Anchors: Drop-In Anchor (DIA, DIAB)
• Country of Origin: Germany

Approved Applications

• Normal-weight concrete
• Sand-lightweight concrete
• Hollow-core concrete

Frequently Asked Questions

What anchor is this drill bit specifically designed for?

This drill bit is specifically designed to prepare anchor holes for the Simpson Strong-Tie 3/8 in. Drop-In anchors, including the DIA and DIAB models.

What drilling depth does the MDPL050DIA produce?

The MDPL050DIA is a fixed-depth bit that drills to exactly 1-11/16 in., matching the precise embedment depth required for proper installation of the 3/8 in. Drop-In anchor.

What type of shank does this drill bit have?

This drill bit features an SDS-Plus shank, which is compatible with SDS-Plus rotary hammers and allows for quick, tool-free bit changes during installation.

What concrete types is this drill bit suitable for?

This fixed-depth drill bit is suitable for use in normal-weight concrete, sand-lightweight concrete, and hollow-core concrete substrates.