Irwin Industrial Tool Co 91152 Silver Deming Drill Bit

Product Description

The IRWIN INDUSTRIAL TOOL CO 91152 is a 13/16 inch Silver Deming drill bit built for heavy-duty drilling in metal, wood, and plastic. Constructed from M-7 high speed steel, this bit delivers high resistance to abrasion during demanding drilling operations. The full length is 6 inches with a 1/2 inch reduced shank that fits all standard 1/2 inch drill chucks. A 3 flatted shank design locks securely in the chuck to minimize slippage during high-torque applications. Licensed trades and fabrication shops rely on this bit for creating large-diameter holes where standard jobber bits fall short.

This bit is suited for residential and commercial applications including automotive repair, body shop work, and metal fabrication. The standard 118 degree point geometry makes it versatile across wood, metal, and plastic substrates. It is ideal for use in keyless chucks and compatible with any 1/2 inch drill. The reduced shank design allows larger diameter cutting without requiring a larger capacity drill. This package includes 6 bits, making it practical for shop inventory or field service kits where bit longevity under heavy use is a concern.

Key Features

• M-7 high speed steel construction for high abrasion resistance during tough drilling
• 3 flatted shank design provides superior chuck grip and reduces slippage
• 1/2 inch reduced shank fits all standard 1/2 inch drills and keyless chucks
• Standard 118 degree point angle for use in wood, metal, and plastic
• 6 inch overall length with 13/16 inch cutting diameter
• Packaged as a 6-count set for shop or field inventory

Compatibility

Designed for use with any 1/2 inch drill accepting a 1/2 inch reduced shank, including keyless chuck models. Suitable for wood, metal, and plastic drilling applications in automotive, body shop, and metal fabrication environments.

Installation Notes

Silver Deming bits are installed and operated by machinists, fabricators, and mechanics using a 1/2 inch drill. Before changing or inspecting bits, ensure the drill is powered off and the chuck is fully disengaged. Secure the 3 flatted shank firmly in the chuck before applying load to prevent rotation or walkout. Use appropriate cutting fluid or lubricant when drilling hard metals to extend bit life and maintain cut quality.