Disston Company 571158 Hss Drill Bit 5/32 X 6 Inches

Product Description

The DISSTON COMPANY 571158 is a 5/32-inch by 6-inch extra-length, high speed steel (HSS) drill bit with a black oxide finish. It features a 135-degree split-point tip with four cutting edges that prevent the bit from walking on contact and allow fast penetration without a center punch. The black oxide tempering treatment lowers frictional heat buildup and improves chip evacuation during drilling. At 6 inches in length, this bit is suited for reaching into deeper cavities or through thicker stock where a standard-length bit would fall short. It is sold individually and is appropriate for use on a range of common materials encountered in trade and construction work.

This drill bit is recommended for use in wood, plastic, wallboard, plywood, soft metals, aluminum, brass, and bronze. It is also suitable for occasional use in stainless steel and other hard metals where a dedicated HSS bit is acceptable. The extra 6-inch length makes it practical for electricians drilling through wall framing, plumbers boring through floor joists, and HVAC technicians routing holes through ductwork supports or light-gauge metal panels. It fits any standard keyed or keyless drill chuck accepting 5/32-inch shanks.

Key Features

• 135-degree split-point tip with four cutting edges prevents walking and starts on contact
• Extra 6-inch length reaches through deeper stock than standard-length bits
• High speed steel construction maintains edge integrity through repeated use
• Black oxide tempering treatment reduces friction and improves chip flow
• Rated for wood, plastic, wallboard, plywood, soft metals, aluminum, brass, and bronze
• Suitable for occasional use in stainless steel and other hard metals

Compatibility

Designed for use in any standard drill or drill press with a chuck that accepts a 5/32-inch round shank. Fits keyed and keyless chucks commonly found on corded and cordless drills used across electrical, plumbing, HVAC, and general construction trades.

Installation Notes

Always power down the drill and ensure the bit is fully seated and the chuck is tightened before operation. Use appropriate cutting speed for the material being drilled — lower speeds are recommended for harder metals to prevent heat buildup and premature edge wear. Eye protection is required when drilling metal. Comply with applicable jobsite safety standards and tool manufacturer guidelines at all times.