Compressive strength 8000.0 to 14000.0 psi; drilling speeds 30 to 75 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 5996-00-201-8861
NSN 5855-00-791-5000
NSN 6105-00-012-8278
NSN 6620-00-950-5979
NSN 6645-01-223-2402
NSN 2925-01-187-5480
NSN 6110-01-027-1851
NSN 6135-01-504-6929
NSN 6145-00-110-4127
NSN 5965-00-296-9994
NSN 5965-01-191-0735
NSN 5945-01-062-0206