MTX Step Drill Bit 9–36 mm, HSS, Spiral Flute, Tri-Flatted Shank

The MTX step drill bit is manufactured from high-speed steel (HSS) and is designed for drilling and enlarging holes with diameters of 9, 12, 15, 18, 21, 24, 27, 30, 33, and 36 mm in sheet steel, stainless steel, non-ferrous metals, and plastic up to 5 mm thick. Its spiral flute design provides smooth cutting, efficient chip evacuation, and clean, burr-free holes.

Made from premium HSS steel with a Titanium Nitride (TiN) coating, the drill bit offers excellent wear resistance and corrosion protection for extended service life. The tri-flatted shank ensures a secure grip in the drill chuck and prevents slipping during operation.

Applications:

• Drilling sheet metal
• Enlarging existing holes
• Steel and stainless steel fabrication
• Non-ferrous metal and plastic drilling
• Construction, installation, and maintenance work

Advantages:

• Replaces multiple conventional drill bits
• Covers hole sizes from 9 to 36 mm
• Spiral flute for efficient chip removal
• Durable HSS construction
• Titanium Nitride coating for longer service life
• Produces smooth, burr-free hole edges
• Tri-flatted anti-slip shank
• No pilot hole required

Technical Specifications:

• Brand: MTX
• Type: Step drill bit
• Hole sizes: 9–12–15–18–21–24–27–30–33–36 mm
• Material: HSS steel
• Coating: Titanium Nitride (TiN)
• Flute type: Spiral
• Shank: Tri-flatted
• Shank diameter: 10 mm
• Overall length: 78 mm
• Working length: 53.5 mm
• Maximum material thickness: 5 mm
• Country of origin: China