Compressive strength 3000 to 6000 psi; drilling speed 50 to 100 rpm
A detachable, end cutting drilling tool with an internal thread or tapered socket at one end for attaching a rock drill rod. The opposite end is designed with two or more cutting edges for drilling into rock formation by impact and a slight rotary motion. It contains a hole or holes in the cutting for the purpose of conducting air or water to clear the hole being drilled. It is used with powered drifter drills, sinker drills, and the like.
Classification: Boring or sinking machinery, nesoi
NSN 5996-00-631-5001
NSN 5950-01-256-0990
NSN 5905-01-246-2329
NSN 6150-01-514-5993
NSN 5999-01-215-1236
NSN 5990-00-538-7330
NSN 5945-00-138-3486
NSN 5930-01-361-5381
NSN 6650-00-181-1446
NSN 6645-00-816-1707
NSN 6610-00-584-5055
NSN 5965-01-377-3587