Cpb-us-e1.wpmucdn.com
The diameter of the hole is determined by a tap drill chart, which can be obtained from engineering suppliers. This chart shows what hole size has to be drilled and what tap size is needed to cut the right thread for any given bolt size. Just remember that if you are drilling a .250" (6 mm) or larger hole, use a smaller pilot drill first. ................
................
To fulfill the demand for quickly locating and searching documents.
It is intelligent file search solution for home and business.