Overview
ISO 5468:2017 specifies the dimensions (in millimetres) for rotary and rotary-impact masonry drill bits with hardmetal (carbide) tips. The standard covers drill bits with nominal diameters from 4 mm to 25 mm inclusive and defines overall and working lengths in three length series: short, long and extra‑long. It applies to rotation and percussion drilling but does not apply to hammer drills.
Key topics and requirements
- Dimensional scope: Diameters 4–25 mm; total and working lengths in short, long and extra‑long series.
- Measurement rules: Diameter is measured between the cutting edges (excluding paint or protective coatings); working length corresponds to the minimum length protruding from the chuck (as shown in Figure 1).
- Dimensions and tolerances: Detailed values and tolerances are given graphically (Figure 1) and numerically (Table 1).
- Design features covered: Height and shoulder of the carbide tip (plaquette), nominal shank dimensions and related tolerances.
- Data mapping: Annex A provides relations between ISO 5468 designations and the ISO 13399 tool-data representation series, facilitating digital data exchange and CAD/CAM integration.
- Purpose: Dimensions were selected to ensure proper fit of anchors and fasteners in drilled holes and to reflect commonly requested sizes based on market studies and modern percussion drilling practices.
Practical applications
ISO 5468:2017 is useful for:
- Drill bit manufacturers and designers - to produce carbide‑tipped masonry drill bits that meet standardized diameters, tip geometries and length series.
- Quality and inspection laboratories - to verify dimensional conformance and tolerancing of masonry drill bits.
- Procurement and specification writers - to reference standardized dimensions when sourcing masonry drill bits for construction projects.
- Tooling data engineers and CAD/CAM teams - through Annex A mapping to ISO 13399 for consistent digital representation and exchange of tool data.
- Construction and fastening system designers - ensuring drilled hole and anchor compatibility for reliable fixation.
Related standards
- ISO 13399 (all parts) - representation and exchange of data for cutting tools; Annex A of ISO 5468 links the two for property and symbol mapping.
ISO 5468:2017 improves compatibility across manufacturers and users by standardizing key dimensional attributes of carbide‑tipped masonry drill bits, supporting consistent product quality, interoperability and digital tool data exchange. Keywords: ISO 5468:2017, masonry drill bits, carbide-tipped, dimensions, tolerances, rotary impact, drill lengths, ISO 13399.