When the hole thread (tapping blind hole thread) can not be broken, because the cutting part of the tap can not cut out the complete thread profile, the drilling depth should be greater than the required screw hole depth, so as to prevent the tap from continuing to attack in the end, resulting in the tap breaking. Usually the drilling depth should be at least equal to the desired thread depth plus the length of the tap cutting part, which is about 0.7of the large diameter of the thread.
Seven times.
Qingdao Xingjiang import and export trade Co., Ltd
- Phone: +86 139-9610-9100
- Business Type: Trading Company
- Location: China
- Main Products: Hardware, plastic
- Total Employees:Less than 100 people
- Year Established:2020
- Export Markets:Domestic Market
- Total Annual Revenue:
