Patent ID: 6328515
Filing Date: 2001-12-11
Classification: F16B

Abstract:
A fastener member for engagement with a female member having an internally threaded bore, said fastener member comprising:a shank portion having thread turns thereon, said threaded shank portion having a work entering end including a truncated lead thread which forms an abrupt end face, said abrupt face of said truncated lead thread being perpendicular to centerline of said shank portion and being formed 360.degree. around said shank portion; andan unthreaded bulbous point proximate to said abrupt end face of said therad turns comprising a radiused portion which defines a maximum diameter, said point adapated to engaged within the internally threaded bore of the female member, wherein said radiused portion promotes alignment prior to the start of engagement of the fastener member threads with the internally threaded bore of the female member.