Irwin 81107 Jobber Drill Bit No. 7 Wire Gauge 118 Deg Hss

Product Description

The IRWIN 81107 is a high-speed steel (HSS) jobber-length drill bit in wire gauge size No. 7, equivalent to 0.2010 inches in decimal diameter. Ground to a 118-degree chisel point with a web-thinned, tapered web configuration, this bit is designed for general-purpose drilling in metals, plastics, and similar materials found in trade and light industrial applications. The bright, uncoated finish preserves the base HSS hardness without added coating weight. Overall length is 3.625 inches, with a 2.4375-inch flute length and a straight cylindrical shank. Licensed HVAC technicians, plumbers, electricians, and general tradespeople reach for this bit when drilling pilot holes or clearance holes with standard drill presses or handheld power drills.

The IRWIN 81107 fits general-purpose drilling tasks across residential and commercial job sites. The No. 7 wire gauge diameter is commonly used when drilling clearance or pilot holes for small fasteners, electrical knockouts, and sheet metal applications. The 3.625-inch overall length suits standard chucks on cordless and corded drills as well as bench drill presses. The right-hand spiral flute pattern evacuates chips efficiently during through-hole drilling in mild steel, aluminum, copper, and engineering plastics. This bit is sold individually but carries a minimum order quantity of 5 units per transaction.

Key Features

• No. 7 wire gauge diameter — 0.2010 inches decimal equivalent
• 118-degree chisel point ground for general-purpose drilling in metal and plastic
• Web-thinned, tapered web reduces thrust and improves chip evacuation
• High-speed steel construction maintains edge hardness under normal drilling heat
• Bright, uncoated finish — no coating to chip or peel during re-grinding
• Right-hand, regular spiral flute with 12xD flute-to-diameter ratio for deeper reach

Compatibility

Designed as an OEM-style general-purpose jobber drill bit compatible with any standard 3-jaw chuck that accepts straight cylindrical shanks in the 0.2010-inch diameter range.

Installation Notes

This bit is installed by electricians, plumbers, HVAC technicians, and general tradespeople using standard corded or cordless drills and bench drill presses. Secure the straight shank firmly in a 3-jaw chuck before applying power. Always center-punch the work surface before drilling to prevent bit walk. Wear appropriate eye protection and ensure the workpiece is clamped or otherwise secured before drilling operations begin.