Disston Company 647386 Titanium Nitride Drill Bit Set 17 Pc

Product Description

The DISSTON COMPANY 647386 is a 17-piece titanium nitride-coated drill bit set designed for drilling into wood, metal, plastic, and composite materials. Each bit features a 135-degree split point tip that self-centers on contact, reducing walking and the need for a center punch. The titanium nitride (TiN) coating increases surface hardness and extends working life compared to standard high-speed steel bits. The set ships in a clamshell case with tiltable inserts that hold each bit securely and allow quick, one-handed access. Tradespeople and experienced DIYers who need a broad range of common fractional sizes on a single job site will find this set covers most standard drilling tasks.

This set is suited for general mechanical, construction, and maintenance work where a range of fractional drill sizes is needed at one time. Typical applications include rough framing, HVAC sheet-metal penetrations, conduit stub-out prep, plumbing rough-in, and general fixture mounting. The 14 fractional sizes span 5/64 inch through 3/8 inch, covering the majority of anchor, fastener, and pilot-hole requirements encountered in residential and light commercial service work.

Key Features

• 135-degree split point self-centers on contact, reducing bit walk on smooth or curved surfaces
• Titanium nitride coating increases bit hardness and extends service life versus uncoated HSS bits
• 17-piece set covers 14 fractional sizes from 5/64 inch to 3/8 inch
• Tiltable case inserts allow quick identification and single-hand retrieval of each bit
• Durable clamshell storage case keeps bits organized and protected between jobs

Compatibility

Designed as a general-purpose fractional drill bit set compatible with standard 3/8-inch and 1/2-inch keyed or keyless drill chucks used in corded and cordless drills.

Installation Notes

Installation of this set requires no special tools beyond the drill it is paired with. Always secure the workpiece before drilling and use appropriate eye protection. When drilling metal, apply cutting fluid to extend bit life and prevent overheating. Ensure the drill chuck is fully tightened before operation to prevent bit slippage.