BOHRCRAFT Counterbore – 1706, M4, HSS, Straight Shank, 180°

The BOHRCRAFT 1706 Counterbore Bit is engineered for precision counterboring, allowing M4 screws and bolt heads to sit flush within a workpiece. Manufactured from high-speed steel (HSS), it delivers excellent durability and cutting accuracy. With its 180° cutting profile and straight shank design, this tool ensures clean, reliable results across a range of materials.

Specifications:

• Brand/Series: BOHRCRAFT 1706

• Type: Counterbore bit

• Size: M4

• Cutting Angle: 180°

• Material: High-speed steel (HSS) – strong, durable, and wear-resistant

• Shank Type: Straight shank – fits standard tool holders

• Dimensions:

  • d1 (Pilot Hole): 4.3mm

  • d2 (Counterbore Diameter): 8mm

  • d3 (Shank Diameter): 5mm

Features & Applications:

• Designed for counterboring M4 screws and bolts

• Accurate 180° cutting edge ensures flush seating of fasteners

• HSS construction for long service life and precision cutting

• Ideal for use on metal, plastics, and wood

• Suitable for machining, woodworking, furniture making, and general assembly tasks