Sutton Viper D105 5.5mm HSS Jobber Drill Bit

The Sutton Viper D105 is a 5.5mm high speed steel jobber drill bit, made to DIN338 dimensions and sold carded as a single bit. It is a useful stepping size between the 5mm and 6mm standards, often picked for 6mm rivets and for opening holes out in metal work. The Viper point is a 118 degree split point that self centers on the mark, so it starts clean, cuts faster than a conventional HSS bit, and needs less pressure to feed.

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 5.5mm diameter
• Less pressure required when drilling
• Suits machine and hand held drilling
• Carded single bit

Specifications

• Diameter: 5.5mm
• Type: HSS jobber drill bit, DIN338
• Model: D105
• Point: 118 degree split point, self centering
• Materials: steel, aluminium, brass, wood and plastics

Applications

• Pilot holes for 6mm fasteners and rivets
• Opening holes out in metal work
• Drilling aluminium and brass
• General fabrication and maintenance

What You Need To Complete The Job

Pair a 5.5mm bit with a drill that runs fast and true, and clear the flutes on deep holes. For masonry work, change to an SDS masonry drill, and keep leather rigger gloves on when handling metal. More cutting gear is in the General Hand Tools range.

Frequently Asked Questions

Can I use this bit in a pillar drill?

Yes. The DIN338 shank fits a standard 13mm chuck, and the self centering split point works well at the higher, steadier speeds a pillar drill can hold. Set a moderate speed, feed the bit smoothly, and it gives a clean, straight hole with less effort than hand drilling.

Why pick a 5.5mm bit over a 5mm or 6mm?

A 5.5mm bit is the middle ground when a 5mm clearance is too tight and a 6mm is too loose. It is a common choice for 6mm rivets and for opening out a pilot hole to fit a fastener that sits between the standard sizes.

Will this bit drill aluminium cleanly?

Yes. Aluminium is one of the easiest metals for an HSS bit. Use a fast speed, a light feed and a little oil to stop the flutes loading up, and the hole stays clean without burrs.

How do I drill a straight hole by hand?

Start the bit on the mark, let the split point bite, and then keep the drill square to the work while you feed. If you need a perfectly square hole, a drill guide or pillar drill is the better tool.

Is this bit suitable for timber framing?

Yes, it clears holes in timber for bolts and lag screws. Back the bit out regularly to clear sawdust, and use a slower feed to keep the hole clean and avoid burning the wood.