RUKO Subland twist drill DIN 8374 type N M4 HSS cylinder shank 90 deg fine

The bore and countersink are completed in one operation. Note: Set the cutting speed based on the large diameter and the feed rate based on the small diameter. For the rational production of through-hole bores and screw head joints with 90°. Further technical information:
– Feed in steel up to 800 N: 0,03mm/rev
– Point angle: 118°
– Type: N
– Type: Fine
– Countersink angle: 90°
– Length of chip groove: 75mm Note: The cutting speed depends on the large diameter, and the feed rate depends on the small diameter