Drill bit Proline 78095K, metal, Ø 9.5 mm, length 125 mm, 1 pc

Proline 78095K metal drill bit is a single HSS-Co cutting tool with a diameter of 9.5 mm and overall length of 125 mm designed for drilling metal and other hard materials. The straight shank allows secure clamping in hand drills and drill presses. The bit is manufactured by precision grinding to ensure accurate, straight holes and is intended for metalworking, fabrication, maintenance and repair tasks that require a precise 9.5 mm hole.

Advantages

The drill bit features a 135° point angle with chamfering adjustment, enabling fast entry and reduced walking at the start of drilling. Made from high-class high-speed steel alloyed with 5% cobalt, it offers increased hardness and high resistance to elevated temperatures. Its geometry and full grinding production method deliver stable cutting performance, long life when used in suitable conditions, and consistent hole quality in difficult-to-machine steels and cast iron.

Suitable for

• Drilling high-alloy steels, stainless and acid-resistant steels
• Working with titanium and creep-resisting steels
• Fabrication and metal repair where a precise 9.5 mm hole is required
• Use in hand-held drills and drill presses for maintenance tasks

Key specifications

• Material: high-speed steel with 5% cobalt (HSS-Co)
• Diameter: 9.5 mm
• Overall length: 125 mm
• Point angle: 135° with chamfering adjustment
• Manufacturing: fully ground flutes for high accuracy and straightness
• Suitable for: high-temperature resistance and drilling hard, abrasion-resistant metals

How to use

Secure the drill bit in the chuck so the straight shank is fully supported and centered. Select an appropriate cutting speed and feed rate for the material being drilled—lower speeds for hardened or stainless steels and higher speeds for softer metals—while applying steady, moderate pressure. Use cutting fluid or coolant when drilling alloyed, stainless or heat-resistant steels to reduce heat build-up and extend tool life. Withdraw the bit periodically to clear chips when drilling deep holes.

Usage recommendations

For best results, pre-center with a spotting drill or punch to prevent walking, use cutting fluid when working with stainless or high-alloy steels, and match drill speed to material hardness. Inspect the bit for wear and replace when the cutting edges are rounded or the point is damaged to maintain hole accuracy.