Dewalt Accessories DW5427 Sds Hammer Drill Bit 3/8x4 in

Product Description

The DEWALT ACCESSORIES DW5427 is an SDS hammer drill bit engineered for deep hole drilling in masonry, concrete, and similar hard substrates. Built around a robust tapered core, it resists flute breaks under heavy load — a common failure point on lesser bits. The two-stage flute design runs a variable helix pattern that actively clears debris from the bore as drilling progresses, keeping the cutting zone clean and reducing heat buildup. Two sharp carbide cutting edges produce round, accurate holes suited for anchor installation. Manufactured in Germany, this bit is backed by a No Break Guarantee.

This bit is sized at 3/8 inch by 4 inch overall and is intended for use with SDS-plus chuck rotary hammer drills. It targets applications where secure, clean anchor holes are required — structural fastening, mechanical system rough-in, electrical conduit anchoring, and concrete fixture mounting. The package quantity is 25 bits per unit, making it practical for volume work on commercial or residential job sites where anchor installation volume is high.

Key Features

• Tapered core construction resists flute breaks during deep hole drilling
• Two-stage variable helix flute design for rapid debris clearing
• Dual carbide cutting edges for clean, round hole geometry
• SDS-plus shank for positive chuck engagement without a chuck key
• Manufactured in Germany with No Break Guarantee
• Sold in a 25-piece package for high-volume anchor installation work

Compatibility

Designed for use with SDS-plus rotary hammer drills for anchor hole drilling in concrete, block, and masonry applications.

Installation Notes

Install this bit into any SDS-plus rotary hammer drill — confirm the bit seats and locks fully before operating. Always wear eye protection and a dust mask when drilling overhead or into concrete. Power down the tool before inserting or removing the bit. Follow applicable OSHA silica dust control guidelines when drilling concrete in enclosed spaces.