Promat Twist drill DIN 338 type N Z3

Twist drill DIN 338 Type N Z3 D.3,7mm HSS-Co features a closed cylindrical shank. It is made of HSS-Co and conforms to DIN 338 standards. The drill has a point angle of 130 degrees and is profile ground with a cylindrical shank. It includes three cutting edges, is designed for right cutting, and has a cross cut. This drill is suitable for all normal drilling work in structural steels, unalloyed and alloyed steels up to 850 N/mm², cast materials, wrought aluminium alloys, and cast aluminium alloys.

Advantages include:

• Particularly precise round holes similar to friction level (machine-dependent) of up to IT9.
• Significantly higher feed rates of up to 60% are possible thanks to the three cutting edges.
• No slipping of the drill bit due to special tip geometry.
• No jamming when drilling in existing drill holes.
• Less wear due to the distribution of work from two to three cutting edges.

Further technical features:

• Cutting direction: right-hand cutting.
• Feed rate in steel up to 800 N: 0.1 mm/rev.
• Quality: profile-ground.
• Overall length: short.