ISO 5609-6:2012

Overview

ISO 5609-6:2012 defines the characteristics of tool holders for internal turning with cylindrical shank - Style Q. Style Q tool holders feature a reduced shank and a cutting edge angle κ = 107.5° and are primarily intended for indexable inserts (hardmetal/carbide, ceramic or other cutting materials) mounted by clamping for internal turning operations. The standard covers dimensions, designation, materials, design options and marking to ensure interchangeability and clear specification.

Key Topics

• Dimensions and geometry
  • Preferred dimensions and symbols are aligned with ISO 5609‑1 and ISO 13399.
  • Tabulated sizes (Tables 1–3) give values for shank diameter, overall length, cutting-edge length, minimum working lengths f and l, and insert thickness s.
• Cutting edge and insert data
  • Style Q is for rhombic indexable inserts (shapes D and V) with specified cutting-edge lengths and corner radii.
  • Nominal corner radii references: ~0.4 mm and ~0.8 mm (converted imperial values 0.397 mm and 0.794 mm); other radii determined per ISO 5609‑1.
• Materials
  • Acceptable materials include high‑strength steel (≥ 1 000 N/mm² tensile), brazed hardmetal heads, or heavy metal tools; final choice left to manufacturer.
• Design and mounting
  • Options with/without lubrication holes and antivibration devices.
  • Standard mounting types follow the tables; alternative mountings possible by agreement.
• Designation and marking
  • Formal designation includes reference to ISO 5609‑6 plus symbols for diameter, length, insert shape, style (Q), clearance, hand (R/L), and cutting edge length (examples given in the standard).
  • Delivered complete with clamping device but without indexable inserts.
  • Marking must include letter symbol and manufacturer name; packaging should reference ISO 5609‑6.

Applications

• Ensures consistent specification and interchangeability of internal turning tool holders used in:
  • CNC lathes and boring machines for internal bore finishing and roughing.
  • Tooling design, inventory management and purchasing of indexable insert systems.
  • CAD/CAM tool libraries and tooling data exchange where ISO 13399 naming conventions apply.
• Useful for tooling manufacturers, machine shops, production engineers, procurement teams and standards/quality engineers specifying or validating tooling.

Who should use this standard

• Tool designers and manufacturers producing cylindrical-shank internal turning holders.
• Shop floor engineers and machinists selecting compatible holders and inserts.
• Purchasing and quality departments that require unambiguous tool designation and conformity.

Related standards

• ISO 5609-1 (designation, styles, dimensions and corrections)
• ISO 5609 (Parts 1–5 covering other styles)
• ISO 1832 (indexable insert designation)
• ISO 13399 (cutting tool data representation and exchange)

Keywords: ISO 5609-6, tool holders for internal turning, style Q, indexable inserts, cylindrical shank, cutting edge angle 107.5°, internal turning tool holders, tool designation, tooling standards.