Somta Somta Series 774 - HSS Parallel Shank Counterbores M10 x 11mm

HSS Counterbore 10 mm (Medium Fit) – Somta Series 774

The SOMTA 7741000 – 10 mm HSS Counterbore is a precision tool designed for enlarging holes to allow cap screw heads or bolt heads to sit flush with or below the surface. Manufactured from high-performance High-Speed Steel (HSS), this counterbore features a medium fit tolerance and is equipped with a removable pilot for accurate centering. Ideal for metalworking and mechanical assembly, it ensures consistent seat depths and alignment for socket head cap screws, bolts, and similar fasteners.

• 10 mm Cutting Diameter – Sized to accommodate common metric cap screw heads.
• Medium Fit – Provides a balanced clearance suitable for general-purpose fastener seating.
• Removable Pilot – Ensures accurate guidance in pre-drilled holes and minimizes misalignment.
• High-Speed Steel (HSS) – Offers durability, heat resistance, and excellent edge retention.
• Straight Flutes – Promote stable cutting and effective chip evacuation.

• Part No: 7741000
• Tool Type: Counterbore
• Cutting Diameter: 10 mm
• Fit Type: Medium Fit
• Pilot: Removable, guided type
• Flute Type: Straight Flute
• Material: High-Speed Steel (HSS)
• Application: Counterboring for socket head cap screws and bolts

• Clean, Consistent Recesses – Delivers flat-bottomed holes for flush bolt seating.
• Accurate Pilot Guidance – Ensures centered cutting and avoids drift or chatter.
• Industrial-Grade HSS – Reliable performance across a range of metal types and production conditions.
• Ideal for Fabrication & Assembly – Perfect for mechanical, structural, or precision fixture work.

The SOMTA 7741000 HSS Counterbore is a must-have tool for machinists and fabricators seeking high-quality bolt seating and alignment-delivering a professional-grade finish with every cut.