Milwaukee 48-20-5404 1-piece Core Bit 1-3/4 in Sds Max

Product Description

The MILWAUKEE 48-20-5404 is a one-piece, carbide-tipped core bit designed for drilling large-diameter holes in masonry and concrete where depth is relatively shallow. With a 1-3/4 inch (1.75 inch) drill diameter and a 3 inch cutting depth, this bit cuts a kerf only — the operator must remove the interior core before advancing to greater depths. The SDS Max shank fits standard SDS Max rotary hammer chucks and maximizes energy transfer from the hammer to the cutting edge. The overall length is 11-3/8 inches, and the shank measures 45/64 inches. Installation of a centering bit is recommended for accurate hole placement.

This core bit is suited for residential and commercial construction applications where large-diameter penetrations are needed through concrete block, poured concrete, or similar masonry substrates. Typical use cases include pipe chase openings, conduit penetrations, and anchor bolt holes. The one-piece body design makes it well-suited for use with large SDS Max rotary hammers on jobsites where core depth does not exceed 3 inches. It is commonly installed by electricians, plumbers, HVAC technicians, and general contractors requiring clean, oversized bore holes without coring equipment.

Key Features

• Carbide cutting edge provides durability in abrasive masonry and concrete materials
• Asymmetric tooth pitch with alternating tooth geometries accelerates material pulverization
• One-piece construction maximizes energy transfer and withstands use in large SDS Max hammers
• Thick-wall core body resists deformation under high-impact hammer loads
• Fluted core exterior reduces friction and clears debris from the kerf faster
• SDS Max shank for direct chuck engagement without additional adapters

Compatibility

Designed for use with SDS Max rotary hammers. Centering bit 48-20-5495 is recommended for accurate hole alignment and is sold separately. Use drift key 48-20-5497 to remove the centering bit from the core bit after drilling.

Installation Notes

Installation is performed by electricians, plumbers, HVAC technicians, or contractors using an SDS Max rotary hammer. Confirm the hammer is powered off and the bit is fully seated and locked in the chuck before drilling. Remove the interior core from the kerf before attempting to drill deeper than the 3 inch cutting depth. Eye protection and dust control measures are recommended when drilling masonry or concrete.

Technical Specifications

• Type: 1-Piece
• Drill Size (Fraction): 1-3/4 inches
• Drill Size (Decimal): 1.75 inches
• Cutting Depth: 3 inches
• Overall Length: 11-3/8 inches
• Shank Size: 45/64 inches
• Shank Type: SDS Max
• Cutting Edge Material: Carbide
• Color: Silver

Standard Information

• Brand: MILWAUKEE
• Manufacturer Part Number: 48-20-5404