Dewalt Accessories DW1604 Drill Bit 3/16x12 in

Product Description

The DEWALT ACCESSORIES DW1604 is a high speed steel split point drill bit designed for demanding drilling applications in metal, wood, and plastic. The bit measures 3/16 inches in diameter and 12 inches in length, making it well suited for deep-hole drilling where standard-length bits fall short. A 135-degree split point tip allows for immediate bite on contact, eliminating the need for a center punch in most applications. The 31-degree helix angle moderates flute aggressiveness, balancing chip evacuation speed with cutting stability. A black oxide coating increases surface hardness and wear resistance for extended service life. Sold in a package of 5.

This bit is intended for use by electricians, plumbers, HVAC technicians, and general contractors who require a long-reach drill bit for boring through studs, joists, steel framing, and similar structural materials. The 12-inch length is particularly useful for fishing wire or pipe through wall cavities and framing members. The parabolic flute geometry promotes efficient chip ejection during both metal and wood drilling, reducing heat buildup and extending bit life under continuous use conditions.

Key Features

• 135-degree split point tip for no-walk starts on metal and hard surfaces
• 31-degree helix angle moderates flute aggressiveness for controlled chip flow
• Parabolic flute design improves chip ejection in metal and wood drilling
• Black oxide coating provides greater resistance to wear and heat
• Industrial grade high speed steel construction
• 12-inch length supports deep-hole and through-framing drilling tasks

Compatibility

Designed as an OEM-style replacement or supplemental drill bit for use in standard 3/8-inch or 1/2-inch keyed and keyless drill chucks compatible with 3/16-inch round-shank bits.

Installation Notes

Installation and use of this bit is typically performed by licensed electricians, plumbers, and HVAC technicians working under applicable codes such as the NEC or IPC. Always secure the workpiece before drilling and ensure the drill is set to an appropriate speed for the material being drilled. Reduce feed pressure when the bit is about to break through the material to prevent grabbing or splintering. Inspect the bit for wear or tip damage before each use and replace when cutting performance degrades.