Cone Countersink Abraboro HSS-Co 2.5–10.4 mm Ø, 50 mm Length

Abraboro cone countersink made of high-speed steel with cobalt (HSS‑Co) offers a working diameter range of 2.5–10.4 mm and a total length of 50 mm. It is designed to produce precise conical recesses and to deburr holes and edges in various metals. The HSS‑Co composition increases heat resistance and tool life, making the countersink suitable for both hand-held and machine operations when mounted in drills or dedicated countersink holders.

Advantages

The HSS‑Co material provides improved wear resistance and thermal stability compared with standard HSS, allowing the tool to maintain cutting performance at higher temperatures. The cone geometry delivers consistent conical chamfers and smooth deburring results across the specified diameter range. The compact 50 mm overall length offers good accessibility in confined workspaces while remaining rigid enough for controlled operation.

Suitable for

• Creating conical countersinks and chamfers in steel, stainless steel and non-ferrous metals
• Deburring drilled holes and sharp edges prior to assembly or finishing
• Use in hand drills, drill presses and dedicated countersink holders

Key specifications

• Material: High-speed steel with cobalt (HSS‑Co)
• Working diameter range: 2.5–10.4 mm
• Total length: 50 mm
• Tool type: Cone-shaped countersink for conical recesses and deburring
• Typical applications: Metalworking, deburring, chamfering

How to use

Secure the countersink in a suitable chuck or dedicated holder and set the machine or drill to a moderate rotational speed appropriate for the workpiece material. Align the cone with the hole or edge to be chamfered, then apply steady, controlled feed until the required-depth cone or burr-free edge is achieved. Withdraw the tool carefully while it is still rotating to avoid catching. For manual operations, maintain stable hand positioning and consistent feed pressure to ensure an even finish.

Usage recommendations

Use cutting fluid or appropriate coolant when working with stainless steel or other heat-sensitive alloys to reduce heat buildup and extend tool life. Inspect the countersink regularly for wear and regrind or replace when the cutting edges become rounded to maintain accuracy and surface quality.