FANAR POGLEBIACZ DIN 335-C 16.5 HSSE countersink 16.5 mm

FANAR POGLEBIACZ DIN 335-C 16.5 HSSE countersink 16.5 mm is a solid, single-piece countersink manufactured to DIN 335-C geometry for precision deburring, countersinking and chamfering of drilled holes in metal. Made from HSSE (high-speed steel with cobalt), this cutter provides improved wear resistance and thermal stability compared with standard high-speed steels, making it suitable for repetitive workshop and industrial operations. The 16.5 mm diameter and DIN 335-C profile ensure consistent cone angles and smooth surface finish when preparing holes for fasteners or removing burrs after drilling.

Advantages

The HSSE material offers higher hot hardness and longer tool life in interrupted cutting and when working with alloyed steels. The solid construction and DIN 335-C geometry deliver dimensional accuracy and concentricity, reducing vibration and producing uniform chamfers. This countersink is compatible with common drill press and hand-held drilling setups and is straightforward to resharpen if required. Its design balances cutting efficiency and surface quality for both single-piece and batch production tasks.

Suitable for

• Countersinking and chamfering holes in mild and alloy steels
• Deburring after drilling operations in metalworking shops
• Preparing hole seats for bolts, screws and fasteners
• Use in drill presses, milling machines and appropriate hand-held drills

Key specifications

• Tip diameter: 16.5 mm
• Material: HSSE (high-speed steel with cobalt)
• Geometry: DIN 335-C countersink profile
• Construction: solid one-piece cutter
• Typical applications: countersinking, chamfering, deburring metal holes

How to use

Secure the countersink in a compatible chuck or collet and ensure concentric mounting before starting the machine. Select an appropriate spindle speed and feed for the workpiece material; HSSE tolerates higher cutting temperatures but avoid excessive speed in thin or soft materials to prevent chatter. Approach the hole centrally and advance the cutter steadily until the required chamfer or countersink depth is reached, then retract while the spindle is still turning to minimize edge formation. Inspect the hole and repeat with light passes if necessary to achieve the desired finish.

Usage recommendations

Use cutting fluid suited to the workpiece material to extend tool life and improve surface finish, and check the condition of the cutting edges regularly. For hardened or highly abrasive alloys, consider reduced speeds and intermittent cutting to prevent overheating. When resharpening, maintain the DIN 335-C profile and consistent relief angles to preserve performance.