Lee A Strnad,Christopher S Lorkowski,Adam A Barlett
申请号：
US14645726
公开号：
US10076373B2
申请日:
2015.03.12
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.
