Sutton Viper D105 9.0mm HSS Jobber Drill Bit

The Sutton Viper D105 is a 9.0mm high speed steel jobber drill bit, made to DIN338 dimensions and sold carded as a single bit. Nine millimetre is a solid fabrication size, the clearance for M9 fixings and a regular pilot for larger bolts. The Viper point is a 118 degree split point that self centers on the mark, starts without walking, and drills up to 2 times faster than a conventional HSS bit with less pressure on the drill.

Key Features

• Viper point design delivers up to 2 times faster drilling than conventional HSS bits
• 118 degree self centering split point
• DIN338 HSS jobber geometry in a 9.0mm diameter
• Reduced drilling pressure for better control
• Suits machine and hand held drilling
• Carded single bit for the toolbox

Specifications

• Diameter: 9.0mm
• Type: HSS jobber drill bit, DIN338
• Model: D105
• Point: 118 degree split point, self centering
• Materials: steel, aluminium, brass, wood and plastics

Applications

• Clearance holes for M9 bolts and studding
• Pilot holes for M10 and M12 fixings
• Drilling steel, aluminium and brass
• Heavy timber and plastic work

What You Need To Complete The Job

Pair a 9.0mm bit with a drill that has real torque, and use a cutting lubricant on steel. For masonry, change to an SDS masonry drill, and for holes above 10mm follow with a pilot drill. The rest of the range lives in General Hand Tools.

Frequently Asked Questions

What is the best speed for a 9mm bit in steel?

Run it at a moderate speed with a firm, steady feed and cutting oil. A 9mm bit wants lower revs than a small bit, with enough pressure to keep the edge biting. If it smokes or the steel discolours, ease off the feed rather than forcing it.

What is a 9mm drill bit used for?

A 9mm HSS bit is a clearance size for M9 bolts and a common pilot for M10 and M12 fixings. It is a solid choice for steel brackets, machine mounts and structural fabrication work.

How much torque do I need to drill 9mm holes?

An 18V cordless drill or a standard corded drill has enough torque for 9mm in steel. Run a moderate speed with a steady feed and let the bit cut; forcing it at low speed overheats the edge.

Can this bit drill through stainless?

It can, but stainless is slow work. Use a slow speed, firm steady pressure, and plenty of lubricant so the edge keeps cutting. For regular stainless use the coated Viper Plus variant.

Do I need a pilot hole at this size?

For thin sheet and most mild steel the split point starts 9mm holes directly. On thicker plate a 5mm or 6mm pilot first gives a straighter hole and reduces the load on the 9mm bit.