Lee A. Strnad,Christopher S. Lorkowski,Adam A. Barlett
申请号：
US16106756
公开号：
US20180353231A1
申请日:
2018.08.21
申请国别(地区):
US
年份:
2018
代理人:
摘要：
A provisional engagement feature for selectively connecting a fastener such as a screw to a driving tool, the fastener incorporating a head with a recess extending therein and a projection contained within the recess for engagement with a corresponding engagement feature of the driving tool.
