Hikoki drill bit 9.2 mm HSS NWKb DIN 340 RN, ground shank 175–115 mm

Hikoki drill bit 9.2 mm HSS NWKb DIN 340 RN, ground shank 175–115 mm is a solid high-speed steel twist drill designed for metalworking and general drilling tasks. With a 9.2 mm diameter and NWKb point geometry, this drill bit is intended for through-holes, pilot holes and machining of steel and similar materials. The ground shank and DIN 340 RN profile provide concentricity and compatibility with hand-held drills and drill presses.

Advantages

The HSS construction provides high wear resistance and heat tolerance for sustained cutting performance in metal. NWKb point geometry ensures reliable centering and reduces walking at drill start. The ground shank improves grip and runout control when clamped in chucks or drill holders. Overall design supports steady chip evacuation and consistent hole quality in steels and comparable materials.

Suitable for

• Drilling through-holes in mild and carbon steel
• Creating pilot holes before tapping or larger drilling operations
• Use in hand drills for on-site metalwork
• Use in drill presses for workshop machining and repeated holes

Key specifications

• Material: high-speed steel (HSS)
• Diameter: 9.2 mm
• Point geometry: NWKb (DIN 340 RN)
• Shank: ground shank with length range 175–115 mm
• Type: twist drill for metal

How to use

Select an appropriate cutting speed and feed for the workpiece material and secure the workpiece. Clamp the drill bit securely in the chuck or holder using the ground shank to minimise runout. Start drilling at low speed to establish the hole and then increase speed as appropriate; use cutting fluid for steel to reduce heat and improve tool life. Withdraw the bit periodically for chip clearance when drilling deep holes.

Usage recommendations

For best results when drilling steel, use a suitable cutting lubricant, maintain proper speed and feed settings, and inspect the drill bit for wear or chipping before prolonged use. Replace the bit if the tip becomes blunt or damaged to preserve hole quality and reduce load on the tool and machine.