Sutton Viper D105 10.5mm HSS Jobber Drill Bit

The Sutton Viper D105 is a 10.5mm high speed steel jobber drill bit, made to DIN338 dimensions and sold carded as a single bit. The 10.5mm size is a specialist step between the 10mm and 11mm standards, useful for exact clearance work and for opening holes out in heavy fabrication. The Viper point is a 118 degree split point that self centers on the mark, starts clean without walking, and cuts up to 2 times faster than a conventional HSS bit.

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 10.5mm diameter
• Less pressure required when drilling
• Suits machine and hand held drilling
• Carded single bit

Specifications

• Diameter: 10.5mm
• 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 M10 fixings and studding
• Opening holes out in structural steel
• Drilling steel, aluminium and brass
• Heavy fabrication work

What You Need To Complete The Job

At 10.5mm you want a drill with torque and a firm, steady feed. For masonry, change to an SDS masonry drill, and for drilling into steel at this size use a pilot drill first. The full fastening range is in General Hand Tools.

Frequently Asked Questions

What is a jobber drill bit?

A jobber bit is a standard length twist drill bit, the format most people use for everyday drilling in a hand drill. The length suits most jobs, and the DIN338 standard defines the dimensions so you can match the right bit to the work with confidence.

Why pick a 10.5mm bit?

A 10.5mm HSS bit covers the gap between 10mm and 11mm, which matters for exact clearance work on M10 fixings and for opening a hole out to a true size in heavy fabrication.

What drill do I need for 10.5mm holes in steel?

A corded drill or a high output 18V cordless handles it. Run a moderate speed with cutting oil and a steady feed; the bit is heavy enough to cut smoothly without being forced.

Can I use this bit on a drill press?

Yes. The DIN338 shank fits a standard 13mm chuck, and the self centering point works well in a drill press for repeat holes. Set a moderate speed and feed the bit at a steady rate.

Is a 10.5mm bit useful for timber?

Yes, it clears holes in heavy timber for bolts and coach screws. Drill with a steady feed and clear the sawdust regularly to keep the hole clean and the edge cool.