Irwin 91136 Silver Deming Drill Bit 9/16 Inches 6 Pack

Product Description

The IRWIN INDUSTRIAL TOOL CO 91136 is a 9/16-inch Silver Deming drill bit engineered for heavy-duty hole creation in metal, wood, and plastic. Constructed from M-7 high speed steel, this bit delivers high resistance to abrasion during demanding drilling applications. The 3-flatted shank design improves chuck grip and reduces slippage, making it compatible with keyless chuck setups. Each bit measures 6 inches in overall length and features a 1/2-inch reduced shank that fits any standard 1/2-inch drill. The 118-degree standard point geometry ensures clean entry across a range of materials. This package contains 6 bits.

The 91136 is well suited for automotive repair, body shop work, and metal fabrication where large-diameter holes are required. The 1/2-inch reduced shank allows use in common 1/2-inch drill chucks without the need for specialized equipment. The M-7 high speed steel construction holds up under the heat and friction generated during extended drilling in hard materials. Machinists, fabricators, and automotive technicians regularly rely on Silver Deming bits of this type for enlarging or creating through-holes in steel, aluminum, and other structural materials.

Key Features

• M-7 high speed steel construction for high abrasion resistance during tough drilling
• 3-flatted shank reduces slippage and improves chuck grip
• Compatible with keyless chucks and all standard 1/2-inch drills
• 118-degree standard point geometry for use in wood, metal, and plastic
• 6-inch overall length with 1/2-inch reduced shank
• Sold as a 6-piece pack for job-site or shop inventory

Compatibility

Designed for use with any standard 1/2-inch drill chuck, including keyless chuck models. The 1/2-inch reduced shank fits all drills accepting a 1/2-inch shank.

Installation Notes

Silver Deming bits are typically installed and used by machinists, fabricators, and automotive technicians. Secure the 1/2-inch reduced shank firmly in the drill chuck before operation and confirm the chuck is fully tightened to prevent slippage during use. Always wear appropriate eye protection and secure the workpiece before drilling. When drilling in hard metals, use a center punch to establish a pilot point and apply cutting fluid to extend bit life and reduce heat buildup.