Twist drill bit Irwin 10502228 — 9.5 mm, 1 pc

Irwin twist drill bit 10502228 with a 9.5 mm diameter is a single-piece general-purpose drill bit intended for manual and machine drilling where a precise 9.5 mm hole is required. The bit features a standard twist geometry optimized for clean penetration in metal, plastic and wood and is supplied with a triangle shank for secure grip in compatible chucks and holders. Length and construction make it suitable for typical workshop and on-site drilling tasks.

Advantages

The 9.5 mm Irwin twist drill bit combines a durable HSS-style construction and a twist flute design to deliver consistent cutting and chip evacuation across a range of materials. Its triangle shank improves torque transfer and reduces slippage in chucks designed for non-round shanks. The bit’s balanced length allows stable drilling in both handheld and drill-press applications.

Suitable for

• Drilling through sheet metal and thin metal plates
• General metalworking tasks requiring a 9.5 mm hole
• Drilling holes in wood and plastic components
• Workshop repair and maintenance jobs
• Handheld drilling and machine drilling when a triangle shank is supported

Key specifications

• Type: Twist drill bit
• Diameter: 9.5 mm
• Overall length: 125 mm
• Shank type: Triangle shank for secure grip
• Material compatibility: Metal, sheet metal, stainless steel, wood, plastic
• Quantity: 1 piece

How to use

Select a drill or holder that supports triangle shanks and secure the bit firmly before starting. Mark the drilling position and pilot if necessary, then drill at a steady speed appropriate to the material: higher speeds for wood and plastic, moderate speeds for general steels, and slower speeds for stainless steel. Apply consistent pressure and allow the bit to cut without forcing. Retract periodically to clear chips when drilling deeper holes.

Usage recommendations

Use cutting fluid or coolant when drilling stainless steel to reduce heat and prolong bit life. For sheet metal, support the workpiece to minimise burrs and vibration. Inspect the bit before use and replace when worn or chipped to maintain hole quality.