Sutton Viper D105 1.0mm HSS Jobber Drill Bit

The Sutton Viper D105 is a 1.0mm jobber drill bit made from high speed steel and sold carded as a single bit. This size carries the Viper Plus treatment: the bit has a Futura Nano PVD coated tip, the latest generation coating, which adds wear resistance and longer life in everyday use. Sutton lists it for machine and hand held drilling in stainless steel, steel, aluminium, cast iron, brass, wood and plastic, and it has been independently tested to exceed 2 times the tool life of a standard Viper bit.

Key Features

• Futura Nano PVD coated tip for extra wear resistance
• Independently tested to exceed 2 times the tool life of standard Viper bits
• Industrial quality high speed steel construction
• 1.0mm DIN338 jobber geometry
• Suits machine and hand held drilling
• Carded single bit for the toolbox

Specifications

• Diameter: 1.0mm
• Type: HSS jobber drill bit, DIN338
• Model: D105, Viper Plus coating
• Coating: Futura Nano PVD
• Materials: stainless steel, steel, aluminium, cast iron, brass, wood and plastic

Applications

• Drilling fine pilot holes in steel and stainless steel
• Starting small screw holes in metal
• Precision work in aluminium and brass
• Wood and plastic drilling at small diameters

What You Need To Complete The Job

A 1.0mm bit is a precision tool, so run it in a drill that turns true and hold the work steady. Keep a pair of leather rigger gloves on hand for handling metal, and for concrete and brick work change to an SDS masonry drill. The rest of your kit is in the General Hand Tools range.

Frequently Asked Questions

What is a 1mm HSS drill bit used for?

A 1mm HSS bit drills small pilot holes and is the first step before tapping a thread or opening a hole out to a larger size. It is a fine tool: use it in a drill that runs true, keep the feed steady, and it starts clean without skating across the surface.

Will this bit drill stainless steel?

Yes. The Viper Plus coating on this bit is made for harder jobs, and Sutton lists stainless steel among the materials it will drill. Run it at a slow speed with light pressure and keep the cut lubricated so the PVD coating keeps its edge.

How does the split point help at this size?

The 118 degree split point self centers when you start the hole, so the bit does not wander across the workpiece. That gives a cleaner start, needs less pressure on the drill, and produces a straighter hole, which matters most on very small diameters.

Can I use this bit in a cordless drill?

Yes. A 1mm bit suits a standard cordless drill. The important thing is a chuck that grips the small shank tightly and a drill that does not wobble; if the bit skips in the chuck, the hole will be off.