The Dormer Pramet A170 Reduced Parallel Shank Drill is a high-speed steel (HSS) blacksmith’s drill bit with a 1/2-inch shank built for large-diameter drilling in standard tool chucks.
Key Features
-
1/2-inch Shank: Fits standard handheld drills and drill presses even when using larger drill sizes.
-
118° Point Angle: Offers a strong cutting point that resists wandering and is easy to re-sharpen.
-
Steam Oxide Finish: Reduces friction and stops metal from sticking to the cutting edge.
-
Versatile HSS Build: Works well on various materials including steel, aluminum, and general metals.
-
Cutting Conditions
PP – Steel and cast steel (steels with alloy content ≤ 10% and a hardness of < 45HRC)
MM – Stainless steel (corrosion resistant steels with ≥ 11% chromium content)
KK – Cast Iron (castings of iron and carbon alloys with > 2% carbon content)
NN – Non-ferrous metals (metals including alloys without an appreciable amount of iron)
SS – High-temperature alloys (superalloys with high temperature stength and corrosion resistant surpassing that of stainless steel)