Parallel shank ISO length M42 8% Cobalt High Speed Steel BS328/1 DIN1897RN Aerospace quality 135° point,* h8 diameter tolerance Right hand cutting Gold finish *drills less than 1.6mm will not have a split point. Drills larger than 13mm or 1/2” will have a 135° notch thinned point.
Unlisted sizes, including wire sizes Number and Letter sizes, may be made to special order, the quantity ordered will determine the unit price.
These tools are the ideal for very tough materials where the full length of a jobber drill is not required. Their short length and high red-hardness make them highly suitable for working harder stainless and aerospace alloys. Unfortunately, their value is not always recognised by the wider market and their relative unpopularity leads to smaller batch quantities and therefore, rather higher prices. The standard stock range is also somewhat limited as a result.
