Dormer A321 3.0mm HSS Power Tool Drill

Product Description

DORMER A321 3.0MM HSS POWER TOOL DRILL

The Dormer Pramet 3.0mm HSS Three-Flat Drill Bit is designed for reliable, accurate drilling in hand-held drills and pillar drill machines. Its heavy-duty construction and three-flat shank provide a secure, non-slip grip in the chuck, reducing slippage during demanding drilling applications.

Manufactured from High Speed Steel (HSS), this drill features a 135° self-centring split point that minimises walking on the workpiece and reduces drilling pressure, making it easier to achieve accurate holes with less effort.

The steam and bronze tempered finish improves lubricity, helping to reduce friction and extend tool life. With a 3.5×D drilling depth, this drill is particularly well suited to drilling a wide range of thin-walled materials while delivering consistent performance.

Features and Benefits
Premium Dormer Pramet HSS drill bit
3.0mm cutting diameter
Heavy-duty construction
Three-flat shank prevents chuck slippage
135° self-centring split point for accurate drilling
Reduced thrust force for easier drilling
Steam and bronze tempered finish for improved lubricity
Suitable for hand-held drills and pillar drill machines
Right-hand cutting rotation
Manufactured to Dormer Pramet standards
h8 industry-standard diameter tolerance
Technical Specifications

Specification Value

Cutting Diameter 3.0mm
Shank Diameter 3.0mm
Overall Length 64mm
Flute Length 37mm
Drill Depth 3.5 × Diameter
Point Angle 135° Split Point
Material High Speed Steel (HSS)
Surface Finish Steam and Bronze Tempered
Shank Type Cylindrical Three-Flat
Cutting Direction Right Hand
Tolerance h8
Weight 2.7g

Typical Applications

Ideal for drilling a wide range of thin-walled materials, including:

Mild steel
Sheet metal
Non-ferrous metals
Aluminium
Copper
Brass
Plastics

Suitable for professional engineers, fabricators, maintenance teams, workshops and general industrial applications.