Sutton D129 0350 Blue Bullet 3.5mm Jobber Drill Bit - M2 HSS, Blue Steam Oxide, DIN 338, Carded

The Sutton D129 Blue Bullet 3.5 mm jobber drill bit is a high speed steel (M2 HSS) drill with a blue steam-oxide finish, supplied as a single drill on a card. It is 70 mm long overall with a 39 mm flute, and is made to DIN 338.

Blue Bullet jobber drills are optimised for drilling ferrous metals and are also suitable for wood and plastic, for both machine and hand-held drilling. The blue finish reduces chip build-up on the cutting edge, the 118° web-thinned point reduces the thrust needed to start the hole, and the precision parallel shank gives accurate hole size.

Where this product is used

• General-purpose drilling in steel and other ferrous metals, by machine or hand-held.
• Pilot holes and 3.5 mm tapping holes.
• Wood and plastic, where Blue Bullet drills are also suitable.
• Applications include DIY, trade, industrial, carpentry, metalworking, machine shop and MRO work.

Design features

• M2 high speed steel (HSS).
• Blue steam-oxide finish: reduces chip build-up on the cutting edge.
• 118° web-thinned point: reduces the thrust required.
• Precision parallel shank for accurate hole size.
• 3.5 mm diameter, 70 mm overall length, 39 mm flute length.
• Single drill, carded.

Drilling notes

• Step feeding or pecking is required for drilling greater than 3 x Ø.
• Use cutting fluid when drilling steel.
• Spot the hole first with a centre punch or a spotting drill for the most accurate hole position.

Key specifications

Related drilling products

The full Blue Bullet range: D102 Blue Bullet metric and D102 Blue Bullet imperial. Other Sutton jobber drills: D101 Silver Bullet.